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ATT&CK techniqueDiscovery

T1614.001 System Language Discovery

DiscoveryEnterpriseSub-technique

As of 2026-10-05, T1614.001 (System Language Discovery) appears in 27 tracked threats, first reported 2026-02-02 and most recently 2026-09-27, with linked actors including APT36, GlassWorm, GlassWorm Operators; it most often appears alongside T1082 (System Information Discovery).

Tracked threats
272 critical, 21 high, 3 medium
First seen
2026-02-02
Last seen
2026-09-27
Threat actors
10In the threats using it
Detection rules
27Blue tier and above

Data as of:

Activity timeline

T1614.001 first appeared in tracked threats on and was most recently reported on . The busiest month was 2026-07 with 10 reports, and 27 of the 27 threats were reported in the twelve months to 2026-09.

How adversaries use it

T1614.001 System Language Discovery is catalogued by MITRE ATT&CK under the Discovery tactic in the Enterprise matrix, as a sub-technique of T1614 System Location Discovery. Threadlinqs maps 27 of 2623 tracked threats (1%) to it; by severity that is 2 critical, 21 high, 3 medium.

Threats that use T1614.001 most often also use T1082 System Information Discovery (22 threats), T1071.001 Web Protocols (21 threats), T1027 Obfuscated Files or Information (17 threats), T1041 Exfiltration Over C2 Channel (15 threats), T1140 Deobfuscate/Decode Files or Information (15 threats). These are the techniques an intrusion set tends to chain with it, so they are the natural next places to look when it is observed.

10 tracked threat actors appear in the threats that use T1614.001; the most frequent are APT36 (1), GlassWorm (1), GlassWorm Operators (1), Grandoreiro operators (1), REvil (1).

Data sources

Telemetry that can reveal T1614.001, per MITRE ATT&CK.

  • Command — Command Execution
  • Process — OS API Execution, Process Creation
  • Windows Registry — Windows Registry Key Access

Threat actors using it

Tracked threats

27 tracked threats use T1614.001.

Detection coverage

Threadlinqs maintains 27 detection rules mapped to T1614.001 (SPL 6, KQL 12, Sigma 9). Rule content is available to Blue tier accounts and above; this page shows counts only.

27 detection rules (SPL/KQL/Sigma) · Blue and above. Compare plans

Parent technique

T1614 System Location Discovery — 74 tracked threats at the technique level.