ValleyRAT malware hijacks Teams installers to spy on business PCs

The page discusses a new malware campaign known as ValleyRAT, which primarily targets corporate users through social engineering tactics. Attackers distribute trojanized software disguised as legitimate tools like Microsoft Teams. The malware utilizes a DLL sideloading technique to evade detection and modifies Windows Defender settings to avoid being flagged.

Key points include the methodology of infecting users via fake download portals, the execution of the malware in memory, and its capabilities in espionage (such as capturing keystrokes). It also emphasizes the importance of network administrators implementing proactive security measures, including monitoring for suspicious outbound connections and securing PowerShell activities.