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North Korean Hackers Spreading Trojanized Versions of PuTTY Client Application

North Korean Hackers Spreading Trojanized Versions of PuTTY Client Application

September 16, 2022Ravie Lakshmanan
A threat with a North Korea nexus has been found leveraging a "novel spear phish methodology" that involves making use of trojanized versions of the PuTTY SSH and Telnet client. Google-owned threat intelligence firm Mandiant attributed the new campaign to an emerging threat cluster it tracks under the name  UNC4034 . "UNC4034 established communication with the victim over WhatsApp and lured them to download a malicious ISO package regarding a fake job offering that led to the deployment of the AIRDRY.V2 backdoor through a trojanized instance of the PuTTY utility," Mandiant researchers  said . The utilization of fabricated job lures as a pathway for malware distribution is an oft-used tactic by North Korean state-sponsored actors, including the Lazarus Group, as part of an enduring campaign called  Operation Dream Job . The entry point of the attack is an ISO file that masquerades as an Amazon Assessment as part of a potential job opportunity at the tech giant.
New Linux Malware Framework Lets Attackers Install Rootkit on Targeted Systems

New Linux Malware Framework Lets Attackers Install Rootkit on Targeted Systems

July 21, 2022Ravie Lakshmanan
A never-before-seen Linux malware has been dubbed a "Swiss Army Knife" for its modular architecture and its capability to install rootkits. This previously undetected Linux threat, called  Lightning Framework  by Intezer, is equipped with a plethora of features, making it one of the most intricate frameworks developed for targeting Linux systems. "The framework has both passive and active capabilities for communication with the threat actor, including opening up SSH on an infected machine, and a polymorphic malleable command and control configuration," Intezer researcher Ryan Robinson  said  in a new report published today. Central to the malware is a downloader ("kbioset") and a core ("kkdmflush") module, the former of which is engineered to retrieve at least seven different plugins from a remote server that are subsequently invoked by the core component. In addition, the downloader is also responsible for establishing the persistence of t
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