Saturday , April 19 2025

WinRAR zero-day exploited since April to hack trading accounts

Traders are falling victim to cybercriminals who are leveraging a zero-day vulnerability in WinRAR, the long-standing shareware archiving tool for Windows, in order to pilfer funds.

In June, the cybersecurity company Group-IB made a remarkable discovery – a vulnerability that impacts how WinRAR handles the ZIP file format. Hackers are able to exploit a zero-day flaw, which means the vendor has no time to fix it before it is exploited. This flaw enables them to conceal harmful scripts within archive files disguised as .jpg images or .txt files. Consequently, they can easily compromise their target machines.

CVE-2025-2492
ASUS warns of critical auth bypass flaw in routers

Hackers can exploit a vulnerability in Asus routers to execute unauthorized functions. This serious issue, rated 9.2 out of 10,...
Read More
CVE-2025-2492  ASUS warns of critical auth bypass flaw in routers

16,000+ Fortinet devices compromised with symlink backdoor, Mostly in Asia

According to Shadowserver Foundation around 17,000 Fortinet devices worldwide have been compromised using a new technique called "symlink". This number...
Read More
16,000+  Fortinet devices compromised with symlink backdoor, Mostly in Asia

Patch now! Critical Erlang/OTP SSH Vuln Allows UCE

A critical security flaw has been found in the Erlang/Open Telecom Platform (OTP) SSH implementation, allowing an attacker to run...
Read More
Patch now! Critical Erlang/OTP SSH Vuln Allows UCE

CISA warns of increasing risk tied to Oracle legacy Cloud leak

On Wednesday, CISA alerted about increased breach risks due to the earlier compromise of legacy Oracle Cloud servers, emphasizing the...
Read More
CISA warns of increasing risk tied to Oracle legacy Cloud leak

CVE-2025-20236
Cisco Patches Unauthenticated RCE Flaw in Webex App

Cisco issued a security advisory about a serious vulnerability in its Webex App that allows unauthenticated remote code execution (RCE)...
Read More
CVE-2025-20236  Cisco Patches Unauthenticated RCE Flaw in Webex App

Apple released emergency security updates for 2 zero-day vulns

On Wednesday, Apple released urgent operating system updates to address two security vulnerabilities that had already been exploited in highly...
Read More
Apple released emergency security updates for 2 zero-day vulns

Oracle Released Patched for 378 flaws for April 2025

On April 15, 2025, Oracle released a Critical Patch Update for 378 flaws for its products. The patch update covers...
Read More
Oracle Released Patched for 378 flaws for April 2025

CVE-2025-24054
Hackers Exploiting NTLM Spoofing Windows Vuln the in Wild

Check Point Research warns of the active exploitation of a new vulnerability, CVE-2025-24054, which lets hackers leak NTLMv2-SSP hashes using...
Read More
CVE-2025-24054  Hackers Exploiting NTLM Spoofing Windows Vuln the in Wild

Bengaluru firm got ransomware attack, Hacker demanded $70,000

Bengaluru's Whiteboard Technologies Pvt Ltd was hit by a ransomware attack, with hackers demanding a ransom of up to $70,000...
Read More
Bengaluru firm got ransomware attack, Hacker demanded $70,000

MITRE warns: U.S. Govt. Funding for MITRE’s CVE Ends Today

MITRE Vice President Yosry Barsoum warned that U.S. government funding for the Common Vulnerabilities and Exposures (CVE) and Common Weakness...
Read More
MITRE warns: U.S. Govt. Funding for MITRE’s CVE Ends Today

ALSO READ:

Kali Linux 2023.3 released: redesign NetHunter ,9 new tools, and more!

According to Group-IB, hackers have been taking advantage of this vulnerability since April in order to disseminate harmful ZIP archives on exclusive trading forums. Group-IB told malicious ZIP archives were posted on at least eight public forums. These forums discuss various topics related to trading, investment, and cryptocurrency. Group-IB declined to name the targeted forums.

The administrators of one of the targeted forums detected the presence of malicious files being shared and promptly issued a warning to their users. In addition to blocking the accounts used by the attackers, the forum also implemented measures to prevent their activities. However, Group-IB discovered evidence indicating that the hackers possessed the ability to bypass the account restrictions imposed by forum administrators. Consequently, they continued distributing malicious files by posting them in threads or sending them via private messages.

Hackers can gain access to brokerage accounts by tricking users into opening malware-infected files. This allows them to perform illegal financial transactions and withdraw funds. At the moment, the cybersecurity company informs that around 130 traders have infected devices. However, they mention that they do not have any information regarding financial losses at this point.
One victim told Group-IB researchers that the hackers attempted to withdraw their money, but were unsuccessful.

The mastermind behind the exploitation of the WinRAR zero-day remains a mystery. Group-IB, however, reported that it has detected the hackers utilizing DarkMe, a Visual Basic trojan associated with the notorious “Evilnum” threat group.

Evilnum, also referred to as “TA4563,” is a highly motivated threat group focused on financial gain, demonstrating significant activity within the United Kingdom. There has been evidence of this happening in Europe since at least 2018. The group has gained recognition for primarily focusing on financial organizations and online trading platforms. Group-IB stated that although they have identified the DarkMe trojan, they cannot definitively establish a direct connection between the detected campaign and this financially motivated group.

According to Group-IB, they have successfully reported the vulnerability, known as CVE-2023-38831, to Rarlab, the creators of WinRAR. On August 2nd, a new and improved WinRAR version (6.23) was released to fix the issue.

Check Also

Airport

Cyberattack on Malaysian airports: PM rejected $10 million ransom

Operations at Kuala Lumpur International Airport (KLIA) were unaffected by a cyber attack in which …

Leave a Reply

Your email address will not be published. Required fields are marked *