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Kaspersky analysis of an installer first classified as adware (MD5 c24e99f9437feacaa63766a3cde3fe3d) found that it delivers the ValleyRAT backdoor. The installer drops a modified, signed Chinese wallpaper tool, QN Wallpaper, and uses it for DLL sideloading of a malicious libcef.dll. The adware's advertising function does not work. Attacke…
Toy Ghouls (aka Bearlyfy, Laboo.boo, Feral Wolf), a financially motivated group targeting Russian organizations since 2025, was observed in early July 2026 using a custom backdoor for the first time. Kaspersky GERT identified two versions, mqtt-bird-agent 0.1.0 (C2 over the public HiveMQ MQTT broker) and matrix-bird-agent 0.1.0 (C2 over a…
Kaspersky identified MovieReaper, a previously unknown modular, multi-stage crimeware framework distributed since mid-August 2026 through movie-themed torrents, including fake "The Odyssey (2026)" releases. Rather than compromising individual trackers, the actor modified the public torrent file repository itorrents.org, so trackers relyin…
In April 2026, Kaspersky GERT responded to an incident at a Middle East manufacturing organization where the actor gained domain admin-equivalent control of Active Directory. The actor created and linked a malicious GPO named PAYLOAD at the domain root. It pushed ransom notes, a wallpaper and lock screen, a logon banner and a local admini…
Kaspersky researchers report that the APT group Mirage Kitten has moved from native C/C++/Go malware to Node.js and JavaScript implants, NodeRabbit and PollCat. Both are cross-platform RATs delivered through spear-phishing by fake recruiters on LinkedIn and other job platforms, using trojanized coding-challenge archives hosted on Amazon S…
