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Gamaredon exploits a WinRAR flaw to drop modular, nearly fileless malware on Ukrainian targets, hiding payloads in Windows streams and resolving C2s via Telegram. Sekoia’s Threat Detection & Research team dropped a YARA rule in late December 2025 to hunt for new initial access vectors, and by January 2026 it had already generated a dozen […]

Security Affairs 4 Jun 2026, 10:53 p.m. Incident · 2 stories Exploit Flaw Initial Access Malware Microsoft Research Threat Detection Ukraine Vulnerability

GREYVIBE, a Russia-linked group active since 2025, targets Ukraine with AI-assisted malware and five attack chains. Researchers say it’s part spy op, part crime gang. Security firm WithSecure has been tracking a previously unknown Russian-linked APT group called GREYVIBE since at least August 2025. The group targets Ukraine and Ukrainian-related organizations across military, government, civilian, […]

Security Affairs 30 May 2026, 6:23 a.m. Incident · 4 stories Advanced Persistent Threat Artificial Intelligence Critical Infrastructure Government Hacking Malware Military Research Russia Ukraine