Russian Cyber Espionage Group Deploys LitterDrifter USB Worm in Targeted Attacks
Nov 18, 2023
Cyber Attack / USB Worm
Russian cyber espionage actors affiliated with the Federal Security Service (FSB) have been observed using a USB propagating worm called LitterDrifter in attacks targeting Ukrainian entities. Check Point, which detailed Gamaredon's (aka Aqua Blizzard, Iron Tilden, Primitive Bear, Shuckworm, and Winterflounder) latest tactics, branded the group as engaging in large-scale campaigns that are followed by "data collection efforts aimed at specific targets, whose selection is likely motivated by espionage goals." The LitterDrifter worm packs in two main features: automatically spreading the malware via connected USB drives as well as communicating with the threat actor's command-and-control (C&C) servers. It's also suspected to be an evolution of a PowerShell-based USB worm that was previously disclosed by Symantec in June 2023. Written in VBS, the spreader module is responsible for distributing the worm as a hidden file in a USB drive together with...