APT / THREAT GROUP

MAILCREEP

aliases

Last seen:Mar 17, 2026

Intelligence Profile

According to Zscaler, MAILCREEP is a Golang-based backdoor leveraging the Microsoft Graph API for its C2 communications.

Threat Analysis

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

External References

→https://www.zscaler.com/blogs/security-research/apt-attacks-target-indian-government-using-sheetcreep-firepower-and

Quick Facts

TypeAPT / Threat Group

Aliases2

Also Known As

win.mailcreepMAILCREEP

External Intelligence

Malpedia: win.mailcreep

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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