Vulnerable Citrix Servers Targeted by Ransomware Gangs
Multiple threat actors are conducting attacks on Citrix servers that have not had the patch applied to correct the CVE-2019-19781 vulnerability. The flaw affects the Citrix Application Delivery Controller (ADC), Citrix Gateway, and two old versions of Citrix SD-WAN WANOP appliances and was announced on December 17, 2019. Exploits for the vulnerability first started to be published on January 11, 2020. A permanent fix was issued to...
Urgent Patching Required for Windows Server Flaws Now PoC Exploits Published
On January 2020 Patch Tuesday (01.14.2020) Microsoft released patches to address two vulnerabilities in Remote Desktop Gateway (RD Gateway) that affected Windows Server 2012, 2016, and 2019. The vulnerabilities have been collectively named BlueGate. Exploitation of the vulnerabilities could lead to remote code execution. Microsoft recommended prompt patching to correct the flaws and now the urgency has increased as several...
CISA Warns of Increase in Emotet Malware Activity
The U.S. Department of Homeland Security Cybersecurity and Infrastructure Security Agency (CISA) has issued a warning over an increase in Emotet malware activity. The Emotet botnet sprung back to life on January 13, 2020 with largescale spamming campaigns detected spreading the Emotet Trojan. The Emotet Trojan is a modular malware that serves as a banking Trojan, information stealer, and malware downloader. The Trojan can move...
Cisco Patches Critical Vulnerability in Cisco Firepower Management Center
Cisco has issued hotfix patches for a critical vulnerability in its network security tool, Cisco Firepower Management Center (FMC). The flaw, tracked as CVE-2019-16028, is due to improper handling of Lightweight Directory Access Protocol (LDAP) authentication responses from an external server. The flaw could be exploited by a remote attacker to bypass authentication and execute arbitrary actions on a vulnerable device with...
The Emotet Botnet is Back in Action Sending Spam with New Lures to Fool the Unwary
There was a welcome Christmas break from the Emotet botnet, but life has returned to normal and it is well and truly back in action. Millions of malspam emails are now being sent spreading the Emotet Trojan in more than 80 countries. The emails contain attachments that are used to install the information stealing Emotet Trojan. Since Emotet is itself a malware downloader, that may not be the only malicious payload that is deployed....
Critical Zero-Day Internet Explorer Vulnerability Exploited in the Wild
Microsoft has announced it is developing a patch for a zero-day Internet Explorer vulnerability that is currently being exploited in the wild. In the meantime, a workaround has been released which should be implemented as soon as possible to prevent exploitation of the vulnerability. The vulnerability is present in Internet Explorer 9, 10 and 11 when used on Windows 7, 8.1, and 10, as well as Windows Server 2012, 2016, and 2019. An...
January 2020 Patch Tuesday Sees Microsoft Patches 49 Vulnerabilities
January 2020 Patch Tuesday has seen Microsoft issue patches for 49 vulnerabilities including 7 rated critical, along with a fix for the Crypt32.dll vulnerability discovered and publicly disclosed by the U.S. National Security Agency. Microsoft has also issued its last round of updates for Windows 7, which reached end of life on January 14. None of the vulnerabilities in this month’s updates are being exploited in the wild and details...
NSA Issues Cybersecurity Advisory on Critical Flaw Affecting Windows 10 and Windows Server
The U.S. National Security Agency has taken the unusual step of publicly disclosing a vulnerability to a software vendor. This is the first time that such a disclosure has been attributed to the NSA. The vulnerability, tracked as CVE-2020-0601, affects Windows 10 and Windows Server 2016 and 2019, and has been rated as critical by the NSA, but only important by Microsoft. When the NSA discovers vulnerabilities they are usually kept...
Critical Citrix Vulnerability Under Active Attack
A critical vulnerability in the Citrix Application Delivery Controller and Citrix Gateway is being exploited in real world attacks. The vulnerability was discovered by security researcher Mikhail Klyuchnikov who reported it to Citrix, but more than a month after being notified about the flaw, a firmware upgrade has yet to be released for vulnerable Citrix appliances. The vulnerability, CVE-2019-19781, has been described by some...
Mozilla Patches Actively Exploited Zero Day Firefox Vulnerability
Mozilla has patched a critical zero-day vulnerability in the Firefox browser which is being actively exploited in the wild. The flaw – tracked as CVE-2019-17026 – is a type confusion vulnerability in the IonMonkey just-in-time (JIT) compiler for the Mozilla SpiderMonkey JavaScript engine with StoreElementHole and FallibleStoreElement. The flaw is present in the Firefox web browser for Windows, Linux, and Mac. The flaw is due to...
Landry’s Restaurant Chain Discovers POS Malware Infection
The popular U.S. restaurant chain Landry’s has discovered malware on the point of sale (POS) system used by 63 of the chain’s brands including Aquarium, Atlantic Grill, Bubba Gump Shrimp Co., Mitchell’s Steakhouse, Morton’s, and Rainforest Café. The malware potentially stole track data, which included card numbers, expiry dates, cardholder’s names, and verification codes. Landry’s said in its breach notification that it had installed...
Critical Flaw Affecting 80,000 Businesses Patched by Citrix
A critical vulnerability in the Citrix Application Delivery Controller and Citrix Gateway has been patched by Citrix. If exploited, the vulnerability could allow an unauthenticated user to access a company’s applications and remotely execute arbitrary code on a company’s local network. The vulnerability – CVE-2019-19781 – affects all versions of the Citrix Application Delivery Controller and Citrix Gateway on all...
Campaign Identified Delivering Package of 6 Malware Variants
A malware distribution campaign has been detected by researchers at Deep Instinct which is delivering a package of 6 malware variants in one hit. The malware includes a backdoor, cryptojacker, cryptocurrency stealer, and information stealing Trojans. Deep Instinct has called the campaign Hornet’s Nest due to the sheer number of threats being delivered. The campaign starts with the delivery of a malware dropper dubbed Legion Loader,...
Preinstalled Acer and Asus Software Contains Privilege Escalation Flaws
SafeBreach has discovered vulnerabilities in software preinstalled on Acer and Asus laptops and computers which could be exploited by hackers to execute malicious payloads with elevated permissions using a signed service. The first flaw affects Acer Quick Access, a preinstalled application that has system-level privileges. Acer Quick Access allows users to modify USB charge settings, toggle wireless devices on and off, and change...
New Orleans Recovering from Ransomware Attack
On Friday December 13, 2019, the City of New Orleans suffered a cyberattack which forced it to shut down its servers while the incident was investigated. The attack was discovered around 5am on Friday when suspicious activity was detected on the network. The decision was taken to shut down its servers around 11am and employees were told to turn off their computers in an attempt to contain the attack. The City’s Emergency Operations...
Zeppelin Ransomware Used to Attack MSPs, Technology, and Healthcare Companies
Security researchers at Blackberry Cylance have identified a new variant of Buran ransomware which is being used in targeted attacks on technology and healthcare companies in Europe and the United States. The new ransomware variant was first detected on November 6, 2019. It is written in Delphi and is a member of the VegaLocker and Buran ransomware family. It is believed to be distributed under the ransomware-as-a-service model. The...
Flaw in Ryuk Ransomware May Make Data Recovery Impossible
Disaster strikes. Your business has been attacked and ransomware has been deployed. You decide to pay the ransom to ensure a quick recovery, only to discover that the decryption keys supplied by the attackers do not work. This is one of the reasons why the FBI’s advice is never to pay the ransom. It is not in the best interests of cybercriminals to permanently encrypt data. After all, once word spreads that paying a ransom will not...
Ransomware Attacks on Network Attached Storage (NAS) Devices on the Rise
A hacker succeeds in gaining access to the computer systems of a business and ransomware is deployed, but there is a fair chance that the business will recover its files from backups and not pay the ransom. However, if backups are not available, there is a high chance that the business will have to pay since data loss is simply not an option. It is therefore no surprise that hackers are now targeting backups and Network Attached...
Microsoft Issues 37 Updates on December 2019 Patch Tuesday; Adobe Fixes 24
December Patch Tuesday has seen Microsoft release patches for 37 vulnerabilities along with 2 advisories. 7 of the vulnerabilities are rated critical, 27 are rated important, 1 is rated moderate, and another is rated low severity. One of the important updates corrects a Windows zero-day privilege escalation flaw – CVE-2019-1458 – in the Win32k component that handles objects in the memory. An attacker could exploit the flaw and...
New Highly Destructive Wiper Malware Variant Detected
A new wiper malware has been detected by security researchers at IBM X-Force which is being used in attacks on energy companies and industrial firms in the Middle East. The malware is believed to have been created by two threat groups in Iran that are known to have links to the Iranian government, APT34 and xHunt. The malware, named ZeroCleare, is being used in targeted attacks against specific organizations according to the...
StrandHogg Android Vulnerability Allows Malicious Apps to Pose as Legitimate Ones
An Android vulnerability has been discovered that allows malicious apps to disguise themselves as legitimate apps and gain full permissions. The vulnerability is being actively exploited by dozens of malicious apps. In order for the flaw to be exploited, a malicious app must first be downloaded. Once on the device, it can masquerade as any legitimate app on the device. When the app icon of a legitimate app is clicked, the malware is...
Critical Vulnerability Patched in GoAhead EmbedThis Web Server Software
Two vulnerabilities have been identified in GoAhead’s EmbedThis Web Server software, which is used by hundreds of millions of Internet of Things (IoT) devices, one of which is a critical flaw that could allow an attacker to take full control of a vulnerable device. GoAhead EmbedThis is an embedded web server for embedded devices. The most serious flaw, CVE-2019-5096, is a remote code execution vulnerability that arises when the web...
Microsoft Reports on New Dexphot Malware That Has Infected 80,000 Devices
This week, Microsoft has reported on a ‘new’ malware threat named Dexphot. It is not exactly new, as Microsoft first detected the threat in October 2018, but an announcement has now been made after a year of tracking the threat. Dexphot is one of a breed of polymorphic malware variants that often evade detection by security solutions. In the case of Dexphot, a variety of methods are used to fool security solutions, notably Dexphot...
Novel Digital Skimming Attack Targets Retailers Using Third-Party Payment Service Platforms
A novel digital skimming attack method has been uncovered by researchers at Malwarebytes, which spoofs third-party secure payment pages used by many online retailers to process their payments combining digital skimming with phishing tactics. When a purchase is made on a website that uses a third-party payment service platform (PSP), the customer is redirected to the PSP which is maintained by the service provider. Their payment is...
37 Vulnerabilities Identified in Popular Virtual Networking Computing Applications
Researchers at Kaspersky Lab have identified 37 vulnerabilities in popular Virtual Network Computing (VNC) applications, some of which are critical and could allow access to sensitive information, the deployment of malware, and the remote execution of arbitrary code. In the most part, the vulnerabilities could result in malfunction or denial of service although some could result in a full compromise of a vulnerable system. VNC is a...
Horrific Android Camera Vulnerability Left Millions of Users Vulnerable to Spying
A vulnerability has been identified in the Google Camera and Samsung Camera apps that is easy to exploit and would allow an attacker to take photos on a vulnerable device, record video, obtain the location of the device, record conversations, access stored images and videos, and silence the shutter sound to ensure the user is unaware that pictures are being taken. All recorded information could then be transferred to the attacker’s C2...
PureLocker Ransomware: A New Ransomware Threat Targeting Enterprise Servers
Security researchers at IBM X-Force and Intezer have identified a new form of ransomware that is being used in targeted attacks on enterprise servers. The new threat has been called PureLocker as it has been written in PureBasic, which is unusual for ransomware. PureLocker represents a serious threat, especially since signature-based security solutions struggle to detect malware written in PureBasic. Researchers at Intezer note that...
November Patch Tuesday: Microsoft Patches 74 Flaws Including Actively Exploited RCE
November Patch Tuesday has seen Microsoft patch 74 vulnerabilities across all its products, including 13 critical flaws and one remote code execution vulnerability that is being actively exploited in the wild. The actively exploited flaw – CVE-2019-1429 – is in Internet Explorer and is a Scripting Engine Memory Corruption vulnerability that was identified by Google’s Project Zero team. The flaw can be exploited by convincing a...
CISA Issues Warning About Holiday Season Scams
‘Tis the season to be jolly, especially if you are a scammer. In the run up to holiday season, cybercriminals go into overdrive and are ready and waiting to take advantage of the millions of online shoppers looking to secure a bargain. Holiday season scams are plentiful, highly varied, convincing, and often successful. This year, the U.S. government is warning consumers to be on high alert for holiday season scams that aim to obtain...
Highly Convincing Phishing Scam Uses Fake WebEx Client to Deliver RAT
A new phishing scam has been detected that uses a WebEx meeting request as a lure to get business users to download a remote access Trojan that masquerades as the WebEx client (WebEx.exe). The campaign was detected by Alex Lanstein and shared on Twitter. The meeting request is a carbon copy of a genuine WebEx meeting notification email. As with the real meeting requests, the email contains a Join Meeting button, which the user needs...
MegaCortex Ransomware Ups the Ante with Threat of Publication of Stolen Data
The developers of MegaCortex ransomware have released an updated version of their file-encrypting malware. The latest version incorporates a new feature to hamper recovery without paying the ransom along with a new threat. Victims are told that if they do not pay the ransom, their files will be published online. The latest version of MegaCortex ransomware was discovered by MalwareHunterTeam. The new version will change the Windows...
Targeted Ransomware Attacks Hit Spanish Companies Hard
A wave of ransomware attacks has been reported in Spain with several appearing to have been attacked almost simultaneously on Monday. One of the attacked companies was Everis, one of the largest IT consulting companies and managed service providers in Spain. The attack on Everis was targeted, which was made clear by the extension added to files encrypted by the ransomware – .3v3r1s. The dropped ransom note explained that its network...
Mass BlueKeep RDP Attacks Detected Spreading Cryptcurrency Miners
The BlueKeep remote code execution vulnerability in Windows Remote Desktop Services is being exploited in real world attacks. The vulnerability – CVE-2019-0708 – can be exploited on vulnerable systems by sending a specially crafted request over RDP. No user interaction is required. A patch to correct the flaw was issued by Microsoft in May. The flaw is one of the most serious vulnerabilities discovered in 2019. Like the Windows...
Update Google Chrome: Zero-Day Vulnerability Being Actively Exploited in the Wild
A recently discovered vulnerability in Google Chrome is being actively exploited by hackers. The vulnerability was discovered by Kaspersky Lab security researchers Anton Ivanov and Alexey Kulaev who reported the flaw to Google. The flaw – CVE-2019-13720 – is a high-severity use-after-free memory corruption vulnerability in the audio component of the Chrome browser. If exploited the flaw could cause the browser to crash and...
FBI Issues Warning Following Increase in E-Skimming Attacks
The FBI has issued a warning following an increase in e-skimming attacks on small and medium sized businesses and government agencies. E-skimming is the term given to the loading of malicious code onto e-commerce websites that captures credit card information when consumers purchase products online. The code sends personal information and credit card details to an attacker-controlled domain in real-time. These attacks are performed on...
7.5 Million Adobe Creative Cloud Users Warned of Data Breach
Adobe has announced that a vulnerability has exposed the private information of approximately 7.5 million Adobe Creative Cloud users. The information was contained in an Elasticsearch database, which could be accessed by anyone via a web browser without any authentication required. Fortunately, only basic customer information was exposed. No financial information or passwords were stored in the database, only basic information about...
NordVPN Discloses 2018 Security Breach
NordVPN is one of the most popular and well-known VPN services on the market. It is used by many people to ensure privacy when using the internet; however, the firm has recently announced that it has suffered a security breach. The announcement came following a post on Twitter by a security researcher who claimed that an unknown individual had stolen private encryption keys that ensure traffic through its servers remain private and...
Free Decyptor for STOP Ransomware Released
Researchers at New Zealand-based cybersecurity firm Emsisoft have released a free decryptor for STOP ransomware. STOP ransomware is primarily used to attack consumers rather than businesses and is usually delivered via cracked software and adware bundles distributed on websites that offer cracks for legitimate software applications such as Photoshop. The threat actors behind the campaign are highly active. In fact, STOP ransomware is...
Critical Linux Wi-Fi Bug Could Result in Full System Compromise
A critical flaw in the Linux rtlwifi driver has been identified which could allow a full system compromise. A patch is being prepared but as not yet been added to the Linux kernel. The rtlwifi driver is used to ensure compatibility of Realtek Wi-Fi chips on Linux devices and allow them to communicate with the Linux operating system. The vulnerability – CVE-2019-17666 – has existed for around 4 years but has only just been...
Adobe October Update Includes Patches for 45 Critical Vulnerabilities in Acrobat and Reader
Adobe usually releases its patches, fixes, and software updates on the same day as Microsoft – The second Tuesday of the month or Patch Tuesday as it has come to be known. No updates were release on Tuesday, October 9, but it turns out that the updates have just been delayed. On October 15, Adobe released a slew of updates to correct vulnerabilities in Adobe Acrobat, Adobe Reader, Adobe Experience Manager, Adobe Experience Manager...
Many Popular Smartphones Vulnerable to Actively Exploited Zero-Day Android Flaw
A zero-day flaw in the Android operating system used by some of the most popular mobile phones on the market is being exploited in real-world attacks. The zero-day flaw is being exploited by the Israeli surveillance firm NSO Group, which is best known for selling zero-day exploits in operating systems to governments for the purpose of espionage. The flaw is present in the Android Kernel binder driver and is a use-after-free...
Reductor Malware Allows Hijacking of HTTPS Traffic
Security researchers at Kaspersky Lab have identified a new form of malware named Reductor that manipulates the random number generator of web browsers allowing decryption of TLS traffic on the fly. The threat actors behind the malware have not been identified, although there are similarities in the code which links it to the COMPfun Trojan, suggesting the authors of both malware variants could be one and the same. Based on...
TransUnion Data Breach Impacts 37,000 Canadians
Chicago-based TransUnion, one of the ‘big three’ consumer credit reporting agencies, has announced that a data breach has been experienced that has potentially allowed an unauthorized individual to gain access to the data of tens of thousands of Canadians. The breach has not affected any consumers in the United States and is far more limited than the data breach the credit reporting agency Experian, which affected 147 million...
Free Muhstik, HildaCrypt, and Nempty Ransomware Decryptors Released
Over the past few days, free decryptors have been released for three ransomware variants – Muhstik, HildaCrypt, and Nempty Ransomware. The decryptors will allow victims of these ransomware variants to recover their files without paying a ransom. Free Decryptor for Nemty Ransomware Researchers at cybersecurity firm Tesorian have developed a free decryptor for Nemty ransomware which works on versions 1.4 and 1.6 of the ransomware....
Microsoft Patches 59 Vulnerabilities Including 9 Critical Flaws
October 2019 Patch Tuesday has seen Microsoft patch 59 vulnerabilities in its products including 8 critical flaws and 1 critical security advisory about the latest servicing stack updates. 49 vulnerabilities are rated important and 1 is of moderate severity. While prompt patching is strongly advisable, none of the flaws in this month’s round of updates are publicly known or are being used in attacks in the wild. The patches have been...
NSCS Warns Vulnerable VPNs are Being Targeted by APT Groups
The UK’s National Cyber Security Center (NCSC) has issued a warning following an increase in cyberattacks exploiting vulnerabilities in virtual private networks (VPNs). The NCSC has been investigating attacks by Advanced Persistent Threat (APT) actors who are targeting government agencies and the military, healthcare organizations, educational institutions, and businesses. These entities typically use VPNs to improve security, yet...
FDA Issues Warning over Urgent/11 Vulnerabilities in Component Used in Medical Devices
The U.S. Food and Drug Administration (FDA) and ICS-CERT have issued warnings about 11 vulnerabilities in a software component used in several operating systems and certain medical devices. The vulnerabilities, collectively referred to as URGENT/11, could lead to remote code execution, information disclosure, and attacks that change the functionality of medical devices and stop them working as intended. While there have not been any...
New Fileless Malware Threat Discovered That Downloads its Own LOLBins
A new form of fileless malware has been discovered that uses legitimate Windows tools – living-off-the-land binaries or LOLBins – to conduct its malicious actions. While the use of LOLBins by fileless malware is nothing new, in this case the malware uses standard tools and also downloads its own LOLBIns. The first – Node.exe – is the Windows implementation of the Node.js framework which is typically used by web...
Healthcare Industry Cybersecurity Matrix of Information Sharing Organizations Issued by HSCC
The U.S. Healthcare and Public Health Sector Coordinating Council (HSCC) has published a new resource to help healthcare organizations start participating in threat intelligence sharing and stay abreast of the latest cybersecurity threats affecting the healthcare sector. Many healthcare organizations understand the importance of cybersecurity information sharing but have yet to make a start. Getting started can be somewhat daunting,...
New Links Between Sodinokibi and GandCrab Ransomware Discovered
The threat actors behind the infamous and highly successful GandCrab ransomware operation announced their retirement earlier this year and shut down their operation. The gang was known for taunting researchers and claimed in May that they had made so much money from their operation – $2 billion – that they could afford to retire. That announcement was taken with a large pinch of salt by many security researchers, both in...
Adobe Fixes Critical Coldfusion Flaws
Adobe has issued an out-of-band update for its web application platform Coldfusion which fixes two critical vulnerabilities and one important flaw. One of the critical vulnerabilities is command injection flaw that could lead to remote code execution. The flaw was identified by Badcode of the Knownsec 404 Team and is being tracked as CVE-2019-8073. The second critical vulnerability, CVE-2019-8074, is a path traversal flaw that could...
MITRE Corporation Publishes List of Top 25 Most Dangerous Software Errors and Vulnerabilities
The MITRE Corporation has published a list of the most dangerous software errors and vulnerabilities. It has been 8 years since the last list was published in 2011. The list contains the Top 25 Common Weakness Enumeration (CWE) software errors based on the risk they pose to organizations and what could possibly happen if the flaws are exploited. The top errors are easy to find, easy to exploit, and can potentially cause catastrophic...
Emotet is Back in Action and Delivering TrickBot and Ryuk Ransomware
It has been all quiet on the Emotet front for the past four months, but the infamous botnet is back with a vengeance. A large-scale spam campaign has been detected that is distributing the versatile Emotet banking Trojan via malicious Word macros. The malspam campaign was detected by researchers at Malwarebytes who identified an uptick in command and control server activity and an email campaign distributing malicious messages in...
Don’t Neglect the Human Factor – Employee Security Awareness Training is Essential
Cybercriminals are attacking businesses by exploiting the weakest link in the security chain – Employees. Attacks exploiting the human factor are far easier to pull off that attempting to find remote code execution vulnerabilities. They are also much quicker and less resource-heavy than brute force attacks. A single phishing email can be all it takes for malware to be installed on a network or for account credentials and sensitive...
Exploit Kit Activity Increases: 4 New Malvertising Campaigns Detected
Exploit kit activity may not be at the level seen in 2016, but the malicious website toolkits are enjoying something of a resurgence. New exploit kits such as Lord have recently been discovered and the activity of more established kits such as Rig and GrandSoft has increased significantly in recent months. Exploit kit activity is now at three times the level of this time last year. Exploit kits are toolkits that are loaded onto...
Weaponized BlueKeep Exploit Released
A weaponized exploit for the BlueKeep vulnerability has been published online by security researchers at Rapid7 and Metasploit. BlueKeep – CVE-2019-0708 – is a wormable remote kernel use-after-free vulnerability affecting the remote desktop protocol on older versions of Windows, including Windows 7 and Windows Server 2008 R2. The latest Windows versions (Windows 8, Windows 10) are unaffected. If exploited, an attacker...
Google Docs Phishing Campaign Bypasses Email Security Solutions to Deliver TrickBot Trojan
A phishing campaign has been detected that uses Google Docs to bypass email security solutions and ensure the emails are delivered to end users’ inboxes. The campaign was detected by security researchers at Cofense, who found the emails were bypassing Proofpoint’s email security gateway solution and were not identified as malicious. The scammers use a legitimate Google account to send emails that link to a document on Google Docs. The...
Digital Extortion and Fileless Malware Attacks Have Soared in 1H, 2019
The first 6 months of 2019 have seen significant increases in business email compromise (BEC) attacks, ransomware attacks, and other forms of cyber extortion, according to a mid-year cybersecurity roundup from Trend Micro. The report, titled Evasive Threats, Pervasive Effects, provides insights into the current threat landscape and the main threats currently faced by businesses. Ransomware attacks have increased significantly, but the...
Phishing Campaign Uses Fake Resumes Used to Deliver Quasar RAT
Fake resumes are being used in a phishing campaign targeting HR departments which delivers Word documents containing a malicious macro that downloads the Quasar Remote Access Trojan (RAT), according to Cofense researchers. The Quasar RAT is an open source malware available on GitHub. The malware is used by many APT groups for espionage, network exploitation, logging keystrokes, stealing passwords, recording webcam footage, and taking...
Malicious CamScanner App Downloaded by 100 Million Users
Users of the free version of the CamScanner app have been advised to uninstall the app immediately, following the discovery of a hidden Trojan Dropper module. The app has already been downloaded by more than 100 million users worldwide, all of whom may be at risk. CamScanner is an optical character recognition (OCR) app that allows users to create editable PDF files from photos of text. The free version of the app was available to...
Apple Fixes Critical Jailbreak Vulnerability… Again
A patch has been released to address a critical jailbreak vulnerability in iOS 12.4. The flaw is a use-after-free vulnerability affecting the iOS kernel and is being tracked as CVE-2019-8605. If exploited, an attacker could execute arbitrary code with system-level privileges and jailbreak the phone. Jailbreaking an iPhone allows software to be installed that would not otherwise be permitted and gives users more control over their...
Study Highlights Risk of Lateral Phishing Attacks
Phishing is the use of impersonation to trick another person into disclosing sensitive information. Phishing can take place over the Internet, telephone, or via text message, but email is the most common attack vector. There are many reasons for compromising email accounts and a variety of tactics are used depending on the end goal. With Business Email Compromise (BEC) the aim is to gain access to the CEO’s email account and use it to...
Custom 404 Pages Used to Serve Fake Microsoft Office 365 Login Forms
A new phishing campaign has been detected by security researchers at Microsoft that uses custom 404 pages to display a fake Office 365 login form. A single domain is used in this campaign and a custom 404 page is created that displays the fake Office 365 login form. The custom 404 page is displayed when any visitor to the website attempts to visit a non-existent web page. Since any URL could be entered to generate the 404 page, the...
Xwo Web Scanner Used to Identify Unprotected MongoDB Databases
Security researchers at AT&T Alien Labs have identified a new ‘malware’ variant that is being used to identify potential targets. The web scanner has been named Xwo, based on the name of its main module. Xwo is python-based and actively scans for exposed web services and default passwords. Xwo scans for services such as MongoDB, Memcached, MySQL, PostgreSQL, Redis, Tomcat, and FTP for any default credentials that have not been...
August 2019 Patch Tuesday Sees More Than 90 Vulnerabilities Patched
August 2019 Patch Tuesday has seen Microsoft issue fixes for 93 vulnerabilities across Windows, Microsoft Browsers, Microsoft Office, and Outlook. 26 of the vulnerabilities have been rated critical. Somewhat unusually, there are no patches to address currently exploited zero-day vulnerabilities in this month’s updates; however, it is still important to apply the updates as soon as possible as it is unlikely to be long before exploits...
U.S. Utilities Targeted in Phishing Campaign Spreading New RAT
U.S. utilities are being targeted in a phishing campaign distributing a new malware variant called LookBack. The spear phishing campaign impersonates a U.S. engineering licensing board and lures recipients into opening an attached Word document. The emails impersonate the U.S. National Council of Examiners for Engineering and Surveying (NCEES) and claim that the recipient has failed an NCEES examination. Further information about the...
2 Billion Devices Vulnerable to Critical ‘Urgent/11’ VxWorks RCE Flaws
Researchers at cybersecurity firm Armis have identified 11 zero-day vulnerabilities in VxWorks, the most popular real time operating system (RTOS). The vulnerabilities are collectively known as ‘Urgent/11’. VxWorks is a real time operating system that is used in approximately 2 billion devices, from routers and VOIP phones to medical devices and critical infrastructure equipment. The vulnerabilities could be exploited in an attack...
Phishing Campaign Uses Fake Office 365 Site to Download Trickbot Trojan
The Trickbot Trojan is being distributed via a new fake Office 365 phishing website. The website is virtually identical to official Microsoft Office 365 site, complete with a realistic looking URL – get-office365[.]live. Nothing appears untoward on the site. Even all the URLs point to webpages on Microsoft domains. However, a few seconds after landing on the site a popup warning will appear from either the Chrome Update Center...
Phishing Campaign Uses SHTML Files to Redirect Users to Malicious Websites
A novel new phishing campaign has been detected that uses an unusual method of directing users to malicious websites that harvest credentials. Phishing campaigns typically use embedded hyperlinks in the message body. Advanced email security solutions can detect and assess the URLs to determine whether they are malicious. To get around this, hyperlinks are often hidden in documents or macros or scripts are hidden in other types of...
Patch Issued for Critical Drupal 8.7.4 Vulnerability
A critical flaw in the Drupal website content management system (CMS) has been patched. The vulnerability is in the core component of the CMS and could allow a threat actor to compromise and take full control of a website. The vulnerability was introduced in Drupal version 8.7.4 and occurs when the currently experimental Workspaces module is enabled. That creates an exploitable access bypass condition. The flaw is being tracked as...
Patch Tuesday July 2019: 15 Critical Vulnerabilities Fixed Including 2 Actively Exploited Zero Days
Patch Tuesday July 2019 has seen Microsoft fix 77 vulnerabilities including 15 rated critical and two actively exploited zero days. Six of the vulnerabilities patched this month had been previously disclosed to the public. The two actively exploited zero-days are both privilege escalation vulnerabilities. The first – CVE-2019-0880 – affects how the 64-bit printer spooler service on 64-bit Windows systems – splwow64.exe –...
New Mac Malware Being Pushed via High Ranking Websites
A new form of Mac malware has been discovered that is being distributed through a variety of websites that rank high in the Google search results. The malware is a Trojan that masquerades as an Adobe flash installer but is really an Apple disk image file (.dmg) that delivers the malware payload, malicious applications and various browser extensions. The malware has been dubbed OSX/CrescentCore and several installers have been captured...
Second Major Florida Ransomware Attack Raises Ransom Total to $1.1 Million in a Month
Two Florida cities suffered major ransomware attacks in the past month that wiped out their computer and phone systems. First came the news that Riviera Beach had suffered a major ransomware attack. The attack started on May 29, 2019 and was detected the following day. The ransomware took the city’s phone system, email system, and water payment system out of action. A ransom demand of 65 Bitcoin ($592,000) was issued by the attackers...
QR Code Phishing Scam Targets Cofense Customers
A new phishing campaign has been detected that uses QR codes to hide the hyperlink to a phishing webpage. Not only does this tactic bypass security solutions that search for potentially malicious URLs, by using a QR code the recipient must switch from the business network to their mobile phone to view the document. The corporate network may have a web filter, sandboxes, and other cybersecurity protections to prevent users from...
Millions of Computers Vulnerable to Dell SupportAssist Flaw
A vulnerability has been identified in Dell SupportAssist software that is pre-installed on millions of Dell PCs and laptops. The privilege escalation flaw could be exploited by malicious software or a logged-in user to elevate privileges to administrator level. The flaw affects both the home 9 (v 3.2.1 and prior) and business (v 2.0) versions of the SupportAssist utility, which is the new name for Dell System Detect. The purpose of...
MSP Remote Access Tools Abused to Deploy Ransomware on Client Networks
Managed service providers (MSPs) are being warned about a spate of attacks that has seen hackers infiltrate MSP systems, compromise their remote management tools, and use them to deploy ransomware on client networks. It is not hard to see the attraction with attacking MSPs. If access can be gained to the MSP network, hackers potentially have access to all the MSP clients through the remote management tools they use to serve their...
Microsoft Urges Azure Customers to Update Exim to Fix Actively Exploited Vulnerability
Microsoft has issued a stern warning to Azure customers to update their virtual machines and ensure they are running Exim version 4.92. Recently, a zero-day Linux Exim mail server vulnerability (CVE-2019-10149) was discovered and an exploit has now been developed and is being used in real-world attacks, including an extensive worm campaign on millions of vulnerable Linux servers. Microsoft explained in a recent advisory that certain...
Free GandCrab Ransomware Decryptor Released for Versions 5.0 and 5.2
Bitdefender has released a decryption tool that can be used to recover files encrypted by all GandCrab ransomware variants, including 5.0 and 5.2. Three decryptors have previously been developed for specific GandCrab ransomware versions. However, as soon as a decryptor was developed, a new version of the ransomware was released. GandCrab ransomware was one of the most widely used ransomware variants in 2018. Since it was first...
June 2019 Patch Tuesday: Microsoft Corrects 88 Vulnerabilities
June 2019 Patch Tuesday has seen Microsoft release 88 patches to address recently discovered vulnerabilities. 20 of the vulnerabilities have been rated critical, and 4 advisories and one servicing stack update have been released. None of the vulnerabilities are believed to have been exploited in the wild. Included in this month’s round of updates are patches to correct four publicly disclosed vulnerabilities – those identified and...
U.S. Coast Guard Issues Warning Following Increase in Cyberattacks on Ships
A rise in malware attacks on commercial vessels has prompted the U.S. Coast Guard to issue a warning to ship owners about the increased risk of attack. Cybersecurity best practices for commercial vessels have also been released to help ship owners and shipping firms improve security. The latest alert is the second to be issued in the past three months. In May, the U.S. Coast Guard warned about an ongoing spear phishing campaign...
BlueKeep Exploit Developed That Allows Full Takeover of Windows 7 or Windows 2008 Device in 22 Seconds
A working exploit for the Microsoft BlueKeep flaw (CVE-2019-0708) has been developed that allows a full, remote account takeover in 22 seconds with no user interaction required. The reverse engineer Zǝɹosum0x0 developed a MetaSploit module which allowed the flaw to be exploited. The exploit was combined with the MimiKatz tool to obtain login credentials, which allowed full control of a vulnerable Windows 2008 device to be gained...
New Zero-Day Vulnerability Identified in Microsoft Remote Desktop Services
A zero-day vulnerability has been identified in Microsoft Remote Desktop Services which could allow an attacker to hijack an existing session that has been locked. By exploiting the vulnerability, the lock screen can be bypassed, even if two-factor authentication has been implemented. The zero-day vulnerability was discovered by Carnegie Mellon University Software Engineering Institute’s Joe Tammariello and concerns Microsoft’s...
MacOS Zero-Day Vulnerability Allows Synthetic Mouse Clicks to Run Malicious Code
A zero-day vulnerability has been discovered in Apple’s Mojave operating system which could be exploited to run malicious code on vulnerable devices without being detected. The zero-day flaw was discovered by Digita Security’s chief research officer Patrick Wardle. The flaw is in Mojave’s application verification system and could be exploited to run whitelisted applications that have been doctored to run malicious code by mimicking...
BlueKeep RDP Vulnerability Still Not Patched on Almost 1 Million Devices
The critical, wormable BlueKeep RDP vulnerability (CVE-2019-0708) that was patched by Microsoft on May 14 has still not been addressed on almost 1 million devices, according to Robert Graham, head of offensive security research at Errata Security. Graham conducted a rdpscan using a scanning tool on top of a masscan port scanner. The tool allowed him to scan the Internet for devices that have not had the BlueKeep RDP bug corrected. In...
HawkEye Keylogger Used in Targeted Attacks on Businesses
Businesses around the world are being targeted by threat actors distributing the Hawkeye keylogger. IBM X-Force researchers identified major campaigns in April and May that targeted businesses across a range of industry sectors, including healthcare, transportation, logistics, marketing, agriculture, and importers and exporters. The Hawkeye keylogger was first identified in 2013 and is still under active development. The malware is...
Exploit for Zero Day Flaw in Windows Task Scheduler Released Online
Security researcher ‘SandboxEscaper’ has released a PoC exploit for yet another vulnerability in Windows Task Scheduler, just a few days after the latest round of patches were issued by Microsoft. This is the 5th exploit for a new zero-day exploit in Windows that has been publicly disclosed by SandboxEscaper. She also claims to have a further four exploits for zero-day vulnerabilities that have not yet been disclosed. The latest bug...
More Than 1 Million Machines Still Vulnerable to EternalBlue Exploit
In March 2017, Microsoft released the MS17-010 patch to correct a flaw in Windows Server Message Block (SMB) v1 that was exploited by WannaCry ransomware two months later. That global malware attack should have served as a warning that patching the vulnerability was essential. As if that was not warning enough, soon after WannaCry came NotPetya and BadRabbit. Yet, three years on, many computers remain vulnerable and have still not had...
Unistellar Hacking Group Deletes More Than 12,500 Unsecured MongoDB Databases
There has been a spate of attacks on businesses running unsecured MongoDB databases in the past three weeks that has seen the attackers delete databases and demand payment to restore the data. The attacks have been conducted by the Unistellar hacking group. This is the largest campaign targeting MongoDB databases since the widespread attacks in 2017. At the time of writing, the latest campaign has seen more than 12,500 databases...
New Intel MDS Vulnerabilities Allow Sensitive Data to Be Accessed from CPUs
Four Microarchitectural Data Sampling (MDS) vulnerabilities have been discovered in Intel processers which could be exploited using a variety of different attack methods to gain access to sensitive information. The flaws can be exploited on computers as well as in cloud environments and can allow information to be obtained from the operating system, applications, virtual machines, and trusted execution environments. The information...
Microsoft Issues Patches for 79 Vulnerabilities Including Critical Wormable Flaw
May 2019 Patch Tuesday has seen Microsoft release security updates to correct 79 vulnerabilities including one critical flaw that could potentially be exploited in a WannaCry-style malware attack. The wormable vulnerability (CVE-2019-0708) is in Remote Desktop Services and can be exploited by sending specially crafted requests via Remote Desktop Protocol (RDP). The vulnerability is pre-authentication and requires no user interaction....
WhatsApp Zero Day Vulnerability Actively Exploited to Spy on Users
A WhatsApp zero day vulnerability has been identified which is being exploited to install spyware on users’ devices. The flaw is a buffer overflow vulnerability is in the VOIP stack which can be exploited by sending specially crafted SRTCP packets to the targeted device. No user interaction is required to exploit the flaw. It can be exploited by placing a call to the user’s device. It does not matter whether the call is answered,...
Microsoft SharePoint Server Flaw Actively Exploited in the Wild
A remote code execution vulnerability in Microsoft SharePoint (CVE-2019-0604) is being actively exploited in the wild by multiple threat actors who are leveraging the flaw to deliver malware. SharePoint is a collaboration tool that integrates with Microsoft Office. Many organizations run SharePoint Server, which is installed on their IT infrastructure to give greater control of SharePoint. If the flaw is exploited, it could give an...
Warning Issued over Electricfish Malware used by North Korea-Backed Threat Group Hidden Cobra
US-CERT has issued a warning about a new malware variant dubbed Electricfish, which is reportedly being used by the North Korea-backed threat group Hidden Cobra, aka Lazarus. The malware is packaged as a Windows 32-bit executable file and establishes a custom protocol that allows traffic to be funneled between two IP addresses. The malware continuously attempts to contact the source and the designation system, which allows both sides...
Antivirus Tool Used by Dharma Ransomware to Hide Malicious Activity
Security researchers at Trend Micro have discovered the threat actors behind Dharma ransomware are using a legitimate AV tool to hide the malicious activities of their ransomware. Dharma ransomware first surfaced in 2016 and has since been used in many attacks on businesses, in particular attacks on healthcare organizations in the United States. The ransomware variant is distributed via spam email which contains a link to a web page...
Verizon 2019 Data Breach Investigations Report Reveals Latest Cyberattack Trends
Verizon has released its 2019 Data Breach Investigations Report. The annual report provides an in-depth analysis of global data breaches, new cyberattack trends, and an overview of the current threat landscape. This is the 12th consecutive year that Verizon has produced the report and this year’s instalment is most extensive DBIR report released to date. Verizon now collects data from 73 sources and included 41,686 reported security...
Large Enterprises Targeted in Major MegaCortex Ransomware Campaign
A new strain of MegaCortex ransomware is being used in targeted attacks on large enterprises. The campaign has seen a large number of attacks performed in the past week according to Sophos. MegaCortex ransomware first surfaced in January 2019 and since then the number of attacks has grown steadily, although the past few days have seen a massive spike in attacks. Sophos reports that over a 48-hour period, 47 large enterprises were...
DHS Orders Federal Agencies to Address Critical Vulnerabilities Within 15 Days
The U.S. Department of Homeland Security has issued a binding operational directive (BOD) which requires all federal agencies to correct critical vulnerabilities in Internet-accessible systems within 15 days of detection, and high severity vulnerabilities within 30 days of detection. Federal agencies are increasingly deploying Internet-accessible systems which are interconnected with complex IT systems. Vulnerabilities in those...
Sodinokibi Ransomware Spread via Oracle WebLogic Server Exploit
A new ransomware variant named Sodinokibi is being used in attacks that exploit a recently disclosed vulnerability in Oracle WebLogic Server – CVE-2019-2725. Oracle released an out-of-band patch to address the flaw on April 26 following several reported cases of the vulnerability being exploited in the wild. Oracle WebLogic Server is part of Oracle Middleware, which is used by many large enterprises. Even though the...
Biggest Malware Threats in Healthcare Revealed
A recent report from Malwarebytes has revealed Trojans are the biggest malware threat. Trojans account for 79% of all malware detected on healthcare systems by Malwarebytes. The Emotet Trojan is the leading malware variant, accounting for 37% of all detected Trojans. While the Emotet Trojan was once just a banking Trojan concerned with obtaining credentials to online bank accounts, it has since evolved to include a wide range of...
Exploitable Flaws Discovered in New WPA3 Wi-Fi Security Standard
The next generation of Wi-Fi security – WPA3 – was launched in the summer of 2018, which promised to be the most secure form of Wi-Fi with the vulnerabilities of WPA2 eliminated. However, WPA3 was found to not be as secure as was initially thought. In total, five methods have been identified that allow the WPA3 standard to be hacked to obtain WiFi passwords. The hacking methods were uncovered by Mathy Vanhoef of New York University...