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ATT&CK techniqueStealth (formerly Defense Evasion)

T1564.003 Hidden Window

Stealth (formerly Defense Evasion)EnterpriseSub-technique

As of 2026-10-05, T1564.003 (Hidden Window) appears in 37 tracked threats, first reported 2026-01-14 and most recently 2026-10-03, with linked actors including APT38, Andariel, Armored Likho; it most often appears alongside T1071.001 (Web Protocols).

Tracked threats
372 critical, 32 high, 3 medium
First seen
2026-01-14
Last seen
2026-10-03
Threat actors
22In the threats using it
Detection rules
86Blue tier and above

Data as of:

Activity timeline

T1564.003 first appeared in tracked threats on and was most recently reported on . The busiest month was 2026-07 with 13 reports, and 37 of the 37 threats were reported in the twelve months to 2026-10.

How adversaries use it

T1564.003 Hidden Window is catalogued by MITRE ATT&CK under the Stealth (formerly Defense Evasion) tactic in the Enterprise matrix, as a sub-technique of T1564 Hide Artifacts. Threadlinqs maps 37 of 2623 tracked threats (1.4%) to it; by severity that is 2 critical, 32 high, 3 medium.

Threats that use T1564.003 most often also use T1071.001 Web Protocols (34 threats), T1140 Deobfuscate/Decode Files or Information (27 threats), T1059.001 PowerShell (26 threats), T1082 System Information Discovery (26 threats), T1204.002 Malicious File (26 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.

22 tracked threat actors appear in the threats that use T1564.003; the most frequent are APT38 (3), Andariel (2), Armored Likho (2), Lazarus Group (2), APT28 (1).

Mitigations

MITRE ATT&CK lists 2 mitigations for T1564.003.

Data sources

Telemetry that can reveal T1564.003, per MITRE ATT&CK.

  • Command — Command Execution
  • File — File Modification
  • Process — Process Creation
  • Script — Script Execution
  • Windows Registry — Windows Registry Key Modification

Threat actors using it

Tracked threats

The 30 most recent of 37 tracked threats that use T1564.003.

Detection coverage

Threadlinqs maintains 86 detection rules mapped to T1564.003 (SPL 34, KQL 28, Sigma 24). Rule content is available to Blue tier accounts and above; this page shows counts only.

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

Parent technique

T1564 Hide Artifacts — 174 tracked threats at the technique level.