Threadlinqs IntelligenceStart free

ATT&CK techniqueStealth (formerly Defense Evasion)

T1036.003 Rename Legitimate Utilities

Stealth (formerly Defense Evasion)EnterpriseSub-technique

As of 2026-10-05, T1036.003 (Rename Legitimate Utilities) appears in 22 tracked threats, first reported 2026-01-14 and most recently 2026-08-03, with linked actors including APT38, Sapphire Sleet, Stardust Chollima; it most often appears alongside T1071.001 (Web Protocols).

Tracked threats
224 critical, 17 high, 1 medium
First seen
2026-01-14
Last seen
2026-08-03
Threat actors
18In the threats using it
Detection rules
41Blue tier and above

Data as of:

Activity timeline

T1036.003 first appeared in tracked threats on and was most recently reported on . The busiest month was 2026-07 with 9 reports, and 22 of the 22 threats were reported in the twelve months to 2026-08.

How adversaries use it

T1036.003 Rename Legitimate Utilities is catalogued by MITRE ATT&CK under the Stealth (formerly Defense Evasion) tactic in the Enterprise matrix, as a sub-technique of T1036 Masquerading. Threadlinqs maps 22 of 2623 tracked threats (0.8%) to it; by severity that is 4 critical, 17 high, 1 medium.

Threats that use T1036.003 most often also use T1071.001 Web Protocols (18 threats), T1082 System Information Discovery (16 threats), T1036.005 Match Legitimate Resource Name or Location (14 threats), T1105 Ingress Tool Transfer (14 threats), T1140 Deobfuscate/Decode Files or Information (12 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.

18 tracked threat actors appear in the threats that use T1036.003; the most frequent are APT38 (2), Sapphire Sleet (2), Stardust Chollima (2), APT10 (1), Akira (1).

Mitigations

MITRE ATT&CK lists 1 mitigation for T1036.003.

Data sources

Telemetry that can reveal T1036.003, per MITRE ATT&CK.

  • Command — Command Execution
  • File — File Metadata, File Modification
  • Process — Process Metadata

Threat actors using it

Tracked threats

22 tracked threats use T1036.003.

Detection coverage

Threadlinqs maintains 41 detection rules mapped to T1036.003 (SPL 18, KQL 11, Sigma 12). Rule content is available to Blue tier accounts and above; this page shows counts only.

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

Parent technique

T1036 Masquerading — 845 tracked threats at the technique level.