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News Feed - 2023-08-25 01:08:36

Martin Young4 hours agoWinRAR patches zero-day bug that targeted stock and crypto tradersAccording to cybersecurity firm Group-IB, weaponized ZIP file archives were being shared on crypto trading forums, with each one containing a nasty surprise.999 Total views18 Total sharesListen to article 0:00NewsJoin us on social networksThe developers behind file compression software WinRAR have patched a zero-day vulnerability that allowed hackers to install malware onto unsuspecting victims" computers, enabling them to hack into their crypto and stock trading accounts.


On Aug. 23, Singapore-based cybersecurity firm Group-IB reported a zero-day vulnerability in the processing of the ZIP file format by WinRAR.


The zero-day vulnerability tracked as CVE-2023-38831 was exploited for approximately four months, allowing hackers to install malware when a victim clicked on files in an archive. The malware would then allow hackers to breach online crypto and stock trading accounts, according to the report.


Using the exploit, the threat actors were able to create malicious RAR and ZIP archives that displayed seemingly innocent files such as JPG images or PDF text documents. These weaponized ZIP archives were then distributed on trading forums targeting crypto traders, offering strategies such as “best Personal Strategy to trade with Bitcoin.”“Once extracted and executed, the malware allows threat actors to withdraw money from broker accounts. This vulnerability has been exploited since April 2023.”


The report confirmed that the malicious archives found their way onto at least eight public trading forums infecting at least 130 devices, however, the victim"s financial losses were unknown.WinRar exploit infection chain. Source: Group-IB


On execution, the script launches a self-extracting (SFX) archive that infects the target computer with various malware strains, such as the DarkMe, GuLoader and Remcos RAT.


These provide the attacker with remote access privileges on the infected computer. DarkMe malware has previously been used in crypto and financially motivated attacks.


The researchers notified RARLABS which patched the zero-day vulnerability in WinRAR version 6.23, released on Aug. 2.


Related:Crypto investors under attack by new malware, reveals Cisco Talos


In August, smartphone giant BlackBerry identified several malware families that actively aimed to hijack computers to mine or steal cryptocurrencies.


The same month also revealed a newly discovered remote access tool called HVNC (Hidden Virtual Network Computer) that can enable hackers to compromise Apple operating systems was found on sale on the dark web.


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