Russia-Aligned Gorbag Hackers Exploit WinRAR Flaw to Deploy Data-Stealing Malware

A Russia-aligned threat actor known as Gorbag has been observed using simple information stealer malware in attacks targeting Ukrainian organizations.

« Active since at least February 2025, the group has focused exclusively on Ukrainian targets, with a clear preference for law enforcement and justice entities, local administrations near the front line, and the defense sector, » ESET researcher