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ATT&CK techniqueDefense Impairment

T1222 File and Directory Permissions Modification

Defense ImpairmentEnterprise

As of 2026-10-05, T1222 (File and Directory Permissions Modification) appears in 33 tracked threats, first reported 2026-02-02 and most recently 2026-08-05, with linked actors including Chaotic Eclipse, Nightmare Eclipse, ALPHV; it most often appears alongside T1082 (System Information Discovery).

Tracked threats
338 critical, 24 high, 1 medium
First seen
2026-02-02
Last seen
2026-08-05
Threat actors
17In the threats using it
Detection rules
30Blue tier and above

Data as of:

Activity timeline

T1222 first appeared in tracked threats on and was most recently reported on . The busiest month was 2026-07 with 20 reports, and 33 of the 33 threats were reported in the twelve months to 2026-08.

How adversaries use it

T1222 File and Directory Permissions Modification is catalogued by MITRE ATT&CK under the Defense Impairment tactic in the Enterprise matrix. Threadlinqs maps 33 of 2623 tracked threats (1.3%) to it; by severity that is 8 critical, 24 high, 1 medium.

Threats that use T1222 most often also use T1082 System Information Discovery (23 threats), T1059 Command and Scripting Interpreter (21 threats), T1005 Data from Local System (20 threats), T1068 Exploitation for Privilege Escalation (17 threats), T1036 Masquerading (16 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.

17 tracked threat actors appear in the threats that use T1222; the most frequent are Chaotic Eclipse (2), Nightmare Eclipse (2), ALPHV (1), BlackCat (1), Earth Lamia (1).

Mitigations

MITRE ATT&CK lists 2 mitigations for T1222.

Data sources

Telemetry that can reveal T1222, per MITRE ATT&CK.

  • Active Directory — Active Directory Object Modification
  • Command — Command Execution
  • File — File Metadata
  • Process — Process Creation

Threat actors using it

Tracked threats

The 30 most recent of 33 tracked threats that use T1222.

Detection coverage

Threadlinqs maintains 30 detection rules mapped to T1222 (SPL 14, KQL 6, Sigma 10). Rule content is available to Blue tier accounts and above; this page shows counts only.

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

Sub-techniques