Phantom Mantis Kernel-Assisted EDR Killer Analysis
Score: 10/10

Phantom Mantis Kernel-Assisted EDR Killer Analysis

Phantom Mantis utilizes a portfolio of kernel-mode tools, including the GentleKiller-related G12/G13 line and the DriverKiller BYOVD tool, to disable endpoint security products before ransomware deployment.

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

Report Score

10out of 10
Quality Score
Excellent
IOC Quality10
TTP Details10
Detection Guidance10
Enterprise Relevance9
Clarity & Structure10
Technical Depth10

Sources