Threats & Adversaries · Ransomware
Velvet Tempest staged DonutLoader and retrieved the CastleRAT backdoor via a ClickFix malvertising campaign.
1 source · Mar 7
BleepingComputer
Termite ransomware breaches linked to ClickFix CastleRAT attacks
Ransomware threat actors tracked as Velvet Tempest are using the ClickFix technique and legitimate Windows utilities to deploy the DonutLoader malware and the CastleRAT backdoor.
originalPart of the PlainSec briefing for 2026-03-08
Every edition of this story: Velvet Tempest Stages DonutLoader and CastleRAT via ClickFix Campaign