APT / THREAT GROUP

GTPDOOR

aliases

Last seen:Mar 17, 2026

Intelligence Profile

According to haxrob, GTPDOOR is the name of Linux based malware that is intended to be deployed on systems in telco networks adjacent to the GRX (GRPS eXchange Network) with the novel feature of communicating C2 traffic over GTP-C (GPRS Tunnelling Protocol - Control Plane) signalling messages. This allows the C2 traffic to blend in with normal traffic and to reuse already permitted ports that maybe open and exposed to the GRX network.

Threat Analysis

GTPDOOR 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://doubleagent.net/telecommunications/backdoor/gtp/2024/02/27/GTPDOOR-COVERT-TELCO-BACKDOOR

→https://nitter.poast.org/haxrob/status/1762821513680732222

Quick Facts

TypeAPT / Threat Group

Aliases2

Also Known As

GTPDOORwin.gtpdoor

External Intelligence

Malpedia: win.gtpdoor

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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