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FBI Warns of Rising Trend of Dual Ransomware Attacks Targeting U.S. Companies

FBI Warns of Rising Trend of Dual Ransomware Attacks Targeting U.S. Companies

Sep 30, 2023 Ransomware / Cyber Threat
The U.S. Federal Bureau of Investigation (FBI) is warning of a new trend of dual ransomware attacks targeting the same victims, at least since July 2023. "During these attacks, cyber threat actors deployed two different ransomware variants against victim companies from the following variants: AvosLocker, Diamond, Hive, Karakurt, LockBit, Quantum, and Royal," the FBI  said  in an alert. "Variants were deployed in various combinations." Not much is known about the scale of such attacks, although it's believed that they happen in close proximity to one another, ranging from anywhere between 48 hours to within 10 days. Another notable change observed in ransomware attacks is the increased use of custom data theft, wiper tools, and malware to exert pressure on victims to pay up. "This use of dual ransomware variants resulted in a combination of data encryption, exfiltration, and financial losses from ransom payments," the agency said. "Second ran
Iranian APT Group OilRig Using New Menorah Malware for Covert Operations

Iranian APT Group OilRig Using New Menorah Malware for Covert Operations

Sep 30, 2023 Cyber Espionage / Malware
Sophisticated cyber actors backed by Iran known as  OilRig  have been linked to a spear-phishing campaign that infects victims with a new strain of malware called Menorah. "The malware was designed for cyberespionage, capable of identifying the machine, reading and uploading files from the machine, and downloading another file or malware," Trend Micro researchers Mohamed Fahmy and Mahmoud Zohdy  said  in a Friday report. The victimology of the attacks is not immediately known, although the use of decoys indicates at least one of the targets is an organization located in Saudi Arabia. Also tracked under the names APT34, Cobalt Gypsy, Hazel Sandstorm, and Helix Kitten,  OilRig  is an Iranian advanced persistent threat (APT) group that specializes in covert intelligence gathering operations to infiltrate and maintain access within targeted networks. The revelation builds on  recent findings  from NSFOCUS, which uncovered an OilRig phishing attack resulting in the deploymen
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New Critical Security Flaws Expose Exim Mail Servers to Remote Attacks

New Critical Security Flaws Expose Exim Mail Servers to Remote Attacks

Sep 30, 2023 Email Security / Hacking News
Multiple security vulnerabilities have been disclosed in the  Exim mail transfer agent  that, if successfully exploited, could result in information disclosure and remote code execution. The list of flaws, which were reported anonymously way back in June 2022, is as follows - CVE-2023-42114  (CVSS score: 3.7) - Exim NTLM Challenge Out-Of-Bounds Read Information Disclosure Vulnerability CVE-2023-42115  (CVSS score: 9.8) - Exim AUTH Out-Of-Bounds Write Remote Code Execution Vulnerability CVE-2023-42116  (CVSS score: 8.1) - Exim SMTP Challenge Stack-based Buffer Overflow Remote Code Execution Vulnerability CVE-2023-42117  (CVSS score: 8.1) - Exim Improper Neutralization of Special Elements Remote Code Execution Vulnerability CVE-2023-42118  (CVSS score: 7.5) - Exim libspf2 Integer Underflow Remote Code Execution Vulnerability CVE-2023-42119  (CVSS score: 3.1) - Exim dnsdb Out-Of-Bounds Read Information Disclosure Vulnerability The most severe of the vulnerabilities is CVE-2023-
Cybercriminals Using New ASMCrypt Malware Loader to Fly Under the Radar

Cybercriminals Using New ASMCrypt Malware Loader to Fly Under the Radar

Sep 29, 2023 Malware / Cyber Threat
Threat actors are selling a new crypter and loader called  ASMCrypt , which has been described as an "evolved version" of another loader malware known as DoubleFinger. "The idea behind this type of malware is to load the final payload without the loading process or the payload itself being detected by AV/EDR, etc.," Kaspersky  said  in an analysis published this week. DoubleFinger was  first documented  by the Russian cybersecurity company, detailing infection chains leveraging the malware to propagate a cryptocurrency stealer dubbed GreetingGhoul to victims in Europe, the U.S., and Latin America. ASMCrypt, once purchased and launched by the customers, is designed to establish contact with a backend service over the TOR network using hard-coded credentials, thereby enabling the buyers to build payloads of their choice for use in their campaigns. "The application creates an encrypted blob hidden inside a .PNG file," Kaspersky said. "This image mus
Lazarus Group Impersonates Recruiter from Meta to Target Spanish Aerospace Firm

Lazarus Group Impersonates Recruiter from Meta to Target Spanish Aerospace Firm

Sep 29, 2023 Cyber Espionage / Malware
The North Korea-linked  Lazarus Group  has been linked to a cyber espionage attack targeting an unnamed aerospace company in Spain in which employees of the firm were approached by the threat actor posing as a recruiter for Meta. "Employees of the targeted company were contacted by a fake recruiter via LinkedIn and tricked into opening a malicious executable file presenting itself as a coding challenge or quiz," ESET security researcher Peter Kálnai  said  in a technical report shared with The Hacker News. The attack is part of a long-standing spear-phishing campaign called  Operation Dream Job  that's orchestrated by the hacking crew in an attempt to lure employees working at prospective targets that are of strategic interest, enticed them with lucrative job opportunities to activate the infection chain. Earlier this March, the Slovak cybersecurity company detailed an attack wave aimed at Linux users that involved the use of bogus HSBC job offers to launch a backdoo
Post-Quantum Cryptography: Finally Real in Consumer Apps?

Post-Quantum Cryptography: Finally Real in Consumer Apps?

Sep 29, 2023 Quantum Computing / Network Security
Most people are barely thinking about basic cybersecurity, let alone post-quantum cryptography. But the impact of a post-quantum world is coming for them regardless of whether or not it's keeping them up tonight.  Today, many rely on encryption in their daily lives to protect their fundamental digital privacy and security, whether for messaging friends and family, storing files and photos, or simply browsing the web. The question experts have been asking for a long time, with their eye on the advances in quantum computing, is, "How long before these defenses fail?"  The ticking clock of quantum computing One set of researchers is already sounding the alarms,  claiming  that they've found a way to break 2048-bit RSA encryption with a quantum computer. While the claims may be premature, they hint toward a scary future that is perhaps closer than we once thought. Breaking RSA encryption would represent a massive privacy and security vulnerability for virtually every
Microsoft's AI-Powered Bing Chat Ads May Lead Users to Malware-Distributing Sites

Microsoft's AI-Powered Bing Chat Ads May Lead Users to Malware-Distributing Sites

Sep 29, 2023 Artificial Intelligence / Malware
Malicious ads served inside Microsoft Bing's artificial intelligence (AI) chatbot are being used to distribute malware when searching for popular tools. The findings come from Malwarebytes, which revealed that unsuspecting users can be tricked into visiting booby-trapped sites and installing malware directly from Bing Chat conversations. Introduced by Microsoft in February 2023, Bing Chat is an  interactive search experience  that's powered by OpenAI's large language model called  GPT-4 . A month later, the tech giant  began   exploring  placing ads in the conversations. But the move has also opened the doors for threat actors who resort to malvertising tactics and propagate malware. "Ads can be inserted into a Bing Chat conversation in various ways," Jérôme Segura, director of threat intelligence at Malwarebytes,  said . "One of those is when a user hovers over a link and an ad is displayed first before the organic result." In an example highligh
Progress Software Releases Urgent Hotfixes for Multiple Security Flaws in WS_FTP Server

Progress Software Releases Urgent Hotfixes for Multiple Security Flaws in WS_FTP Server

Sep 29, 2023 Server Security / Vulnerability
Progress Software has released hotfixes for a critical security vulnerability, alongside seven other flaws, in the WS_FTP Server Ad hoc Transfer Module and in the WS_FTP Server manager interface. Tracked as  CVE-2023-40044 , the flaw has a CVSS score of 10.0, indicating maximum severity. All versions of the software are impacted by the flaw. "In WS_FTP Server versions prior to 8.7.4 and 8.8.2, a pre-authenticated attacker could leverage a .NET deserialization vulnerability in the Ad Hoc Transfer module to execute remote commands on the underlying WS_FTP Server operating system," the company  said  in an advisory. Assetnote security researchers Shubham Shah and Sean Yeoh have been credited with discovering and reporting the vulnerability. The list of remaining flaws, impacting WS_FTP Server versions prior to 8.8.2, is as follows - CVE-2023-42657  (CVSS score: 9.9) - A directory traversal vulnerability that could be exploited to perform file operations. CVE-2023-40045
Cisco Warns of Vulnerability in IOS and IOS XE Software After Exploitation Attempts

Cisco Warns of Vulnerability in IOS and IOS XE Software After Exploitation Attempts

Sep 29, 2023 Vulnerability / Network Security
Cisco is warning of attempted exploitation of a security flaw in its IOS Software and IOS XE Software that could permit an authenticated remote attacker to achieve remote code execution on affected systems. The medium-severity vulnerability is tracked as  CVE-2023-20109 , and has a CVSS score of 6.6. It impacts all versions of the software that have the GDOI or G-IKEv2 protocol enabled. The company  said  the shortcoming "could allow an authenticated, remote attacker who has administrative control of either a group member or a key server to execute arbitrary code on an affected device or cause the device to crash." It further noted that the issue is the result of insufficient validation of attributes in the Group Domain of Interpretation (GDOI) and G-IKEv2 protocols of the GET VPN feature and it could be weaponized by either compromising an installed key server or modifying the configuration of a group member to point to a key server that is controlled by the attacker.
GitHub Repositories Hit by Password-Stealing Commits Disguised as Dependabot Contributions

GitHub Repositories Hit by Password-Stealing Commits Disguised as Dependabot Contributions

Sep 28, 2023 Supply Chain / Malware
A new deceptive campaign has been observed hijacking GitHub accounts and committing malicious code disguised as Dependabot contributions with an aim to steal passwords from developers. "The malicious code exfiltrates the GitHub project's defined secrets to a malicious C2 server and modify any existing javascript files in the attacked project with a web-form password-stealer malware code effecting any end-user submitting its password in a web form," Checkmarx  said  in a technical report. The malware is also designed to capture GitHub secrets and variables to a remote server by means of a GitHub Action. The software supply chain security firm said it observed the atypical commits to hundreds of public and private GitHub repositories between July 8 and 11, 2023. It has emerged that the victims had their GitHub personal access tokens stolen and used by the threat actors to make falsified code commits to users' repositories by posing as Dependabot. Dependabot  is d
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