Russia-linked APT uses DRILLAPP backdoor to spy on Ukrainian targets

Russia-linked threat actors target Ukrainian entities with DRILLAPP backdoor and use Edge debugging for stealth. A new DRILLAPP backdoor campaign targets Ukrainian organizations, abusing Microsoft Edge debugging to evade detection. Observed in February 2026, it shows links to previous Russian-aligned operations by Laundry Bear APT group (aka UAC-0190, Void Blizzard) using the PLUGGYAPE malware family […]