Threadlinqs IntelligenceStart free

ATT&CK techniqueInitial AccessLateral Movement

T1091 Replication Through Removable Media

Initial AccessLateral MovementEnterprise

As of 2026-10-05, T1091 (Replication Through Removable Media) appears in 38 tracked threats, first reported 2026-02-16 and most recently 2026-09-18, with linked actors including Gamaredon, APT28, APT36; it most often appears alongside T1082 (System Information Discovery).

Tracked threats
388 critical, 24 high, 5 medium, 1 low
First seen
2026-02-16
Last seen
2026-09-18
Threat actors
14In the threats using it
Detection rules
54Blue tier and above

Data as of:

Activity timeline

T1091 first appeared in tracked threats on and was most recently reported on . The busiest month was 2026-06 with 8 reports, and 38 of the 38 threats were reported in the twelve months to 2026-09.

How adversaries use it

T1091 Replication Through Removable Media is catalogued by MITRE ATT&CK under the Initial Access and Lateral Movement tactics in the Enterprise matrix. Threadlinqs maps 38 of 2623 tracked threats (1.4%) to it; by severity that is 8 critical, 24 high, 5 medium, 1 low.

Threats that use T1091 most often also use T1082 System Information Discovery (24 threats), T1005 Data from Local System (21 threats), T1027 Obfuscated Files or Information (20 threats), T1083 File and Directory Discovery (17 threats), T1059 Command and Scripting Interpreter (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.

14 tracked threat actors appear in the threats that use T1091; the most frequent are Gamaredon (4), APT28 (2), APT36 (2), Gamaredon Group (2), Mustang Panda (2).

Mitigations

MITRE ATT&CK lists 3 mitigations for T1091.

Data sources

Telemetry that can reveal T1091, per MITRE ATT&CK.

  • Drive — Drive Creation
  • File — File Access, File Creation
  • Process — Process Creation

Threat actors using it

Tracked threats

The 30 most recent of 38 tracked threats that use T1091.

Detection coverage

Threadlinqs maintains 54 detection rules mapped to T1091 (SPL 18, KQL 21, Sigma 15). Rule content is available to Blue tier accounts and above; this page shows counts only.

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