Technical Analysis: Killer Ultra Malware Targeting EDR…

ARC Labs analyzed 'Killer Ultra', a malware component used in Qilin ransomware attacks that leverages a vulnerable Zemana driver (CVE-2024-1853) to gain kernel-level process termination capabilities, enabling it to disable popular EDR/AV products (Symantec, Microsoft Defender, SentinelOne), clear Windows Event Logs, and persist via scheduled tasks; the report includes a sample hash and detection guidance.