Executive Summary
Phantom Mantis (formerly ArmCorp/TheGentlemen) and its support entity LARVA-368 have developed a sophisticated portfolio of kernel-assisted tools designed to neutralize EDR, antivirus, and remote management software. This 'killer' portfolio is provided as a service to affiliates to facilitate ransomware deployment by pinning endpoint defenses.
The technical capability is split into two tracks: an internally maintained, multifunction line (G12 and G13) that automates security product suppression, and an externally sourced Bring Your Own Vulnerable Driver (BYOVD) tool (DriverKiller) that reuses public proof-of-concept code and vulnerable third-party drivers. G13, the most advanced variant, expands beyond simple process termination into driver-load blocking, minifilter interference, and memory destruction.
This activity represents a high threat to all sectors as it targets the fundamental integrity of endpoint security agents. The use of kernel-mode primitives allows these tools to bypass standard user-mode protections and self-defense mechanisms of major security vendors.
Key Details
Threat Name
Phantom Mantis
Affects
TG Soft VirIT Agent driver (viragt64.sys), VirIT Agent System v1, 0, 0, 11
Adversary
Phantom Mantis Other Adversaries and Aliases: LARVA-368
Malware/Tools
G12, G13, DriverKiller, GentleKiller, G11.sys
