GRUNT

aliases

Last seen:Mar 17, 2026

Intelligence Profile

Malware family tracked by Malpedia. ID: win.grunt

Threat Analysis

GRUNT is a known-sophistication threat actor of undetermined national origin, engaged in cyber operations with a primary motivation of unknown activity patterns.

Intelligence Reports Mentioning GRUNT

Disgruntled researcher leaks “BlueHammer” Windows zero-day exploit

BleepingComputer· Apr 6, 2026

External References

→https://blog.sekoia.io/apt28-operation-phantom-net-voxel/

→https://blog.talosintelligence.com/2020/02/building-bypass-with-msbuild.html

→https://cert.gov.ua/article/6284080

→https://cert.gov.ua/article/6287250

→https://jsac.jpcert.or.jp/archive/2024/pdf/JSAC2024_1_9_takeda_furukawa_en.pdf

Quick Facts

TypeAPT / Threat Group

Aliases3

Also Known As

GRUNTwin.gruntCovenant

External Intelligence

Malpedia: win.grunt

Research Links

MITRE ATT&CK VirusTotal Google (news) Twitter/X search

Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.

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