UAC-0099 Using WinRAR Exploit to Target Ukrainian Firms with LONEPAGE Malware

The threat actor known as UAC-0099 has been linked to continued attacks aimed at Ukraine, some of which leverage a high-severity flaw in the WinRAR software to deliver a malware strain called LONEPAGE. "The threat actor targets Ukrainian employees working for companies outside of Ukraine," cybersecurity firm Deep Instinct said in a Thursday analysis. UAC-0099 was first

Microsoft Warns of Kremlin-Backed APT28 Exploiting Critical Outlook Vulnerability

Microsoft on Monday said it detected Kremlin-backed nation-state activity exploiting a now-patched critical security flaw in its Outlook email service to gain unauthorized access to victims' accounts within Exchange servers. The tech giant attributed the intrusions to a threat actor it called Forest Blizzard (formerly Strontium), which is also widely tracked under the

Konni Group Using Russian-Language Malicious Word Docs in Latest Attacks

A new phishing attack has been observed leveraging a Russian-language Microsoft Word document to deliver malware capable of harvesting sensitive information from compromised Windows hosts. The activity has been attributed to a threat actor called Konni, which is assessed to share overlaps with a North Korean cluster tracked as Kimsuky (aka APT43). "This campaign relies on a remote access trojan

Experts Uncover DarkCasino: New Emerging APT Threat Exploiting WinRAR Flaw

A hacking group that leveraged a recently disclosed security flaw in the WinRAR software as a zero-day has now been categorized as an entirely new advanced persistent threat (APT). Cybersecurity company NSFOCUS has described DarkCasino as an "economically motivated" actor that first came to light in 2021. "DarkCasino is an APT threat actor with strong technical and learning ability, who is good

SideCopy Exploiting WinRAR Flaw in Attacks Targeting Indian Government Entities

The Pakistan-linked threat actor known as SideCopy has been observed leveraging the recent WinRAR security vulnerability in its attacks targeting Indian government entities to deliver various remote access trojans such as AllaKore RAT, Ares RAT, and DRat. Enterprise security firm SEQRITE described the campaign as multi-platform, with the attacks also designed to infiltrate Linux systems with a

Google TAG Detects State-Backed Threat Actors Exploiting WinRAR Flaw

A number of state-back threat actors from Russia and China have been observed exploiting a recent security flaw in the WinRAR archiver tool for Windows as part of their operations. The vulnerability in question is CVE-2023-38831 (CVSS score: 7.8), which allows attackers to execute arbitrary code when a user attempts to view a benign file within a ZIP archive. The shortcoming has been actively

Pro-Russian Hackers Exploiting Recent WinRAR Vulnerability in New Campaign

Pro-Russian hacking groups have exploited a recently disclosed security vulnerability in the WinRAR archiving utility as part of a phishing campaign designed to harvest credentials from compromised systems. "The attack involves the use of malicious archive files that exploit the recently discovered vulnerability affecting the WinRAR compression software versions prior to 6.23 and traced as CVE-

Beware: Fake Exploit for WinRAR Vulnerability on GitHub Infects Users with Venom RAT

A malicious actor released a fake proof-of-concept (PoC) exploit for a recently disclosed WinRAR vulnerability on GitHub with an aim to infect users who downloaded the code with Venom RAT malware. "The fake PoC meant to exploit this WinRAR vulnerability was based on a publicly available PoC script that exploited a SQL injection vulnerability in an application called GeoServer, which is tracked

S3 Ep149: How many cryptographers does it take to change a light bulb?

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WinRAR Security Flaw Exploited in Zero-Day Attacks to Target Traders

A recently patched security flaw in the popular WinRAR archiving software has been exploited as a zero-day since April 2023, new findings from Group-IB reveal. The vulnerability, cataloged as CVE-2023-38831, allows threat actors to spoof file extensions, thereby making it possible to launch malicious scripts contained within an archive that masquerades as seemingly innocuous image or text files.

New WinRAR Vulnerability Could Allow Hackers to Take Control of Your PC

A high-severity security flaw has been disclosed in the WinRAR utility that could be potentially exploited by a threat actor to achieve remote code execution on Windows systems. Tracked as CVE-2023-40477 (CVSS score: 7.8), the vulnerability has been described as a case of improper validation while processing recovery volumes. "The issue results from the lack of proper validation of user-supplied