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ATT&CK techniqueDiscovery

T1120 Peripheral Device Discovery

DiscoveryEnterprise

As of 2026-10-05, T1120 (Peripheral Device Discovery) appears in 34 tracked threats, first reported 2026-02-02 and most recently 2026-07-31, with linked actors including UNC1549, APT28, APT36; it most often appears alongside T1041 (Exfiltration Over C2 Channel).

Tracked threats
346 critical, 25 high, 3 medium
First seen
2026-02-02
Last seen
2026-07-31
Threat actors
24In the threats using it
Detection rules
15Blue tier and above

Data as of:

Activity timeline

T1120 first appeared in tracked threats on and was most recently reported on . The busiest month was 2026-07 with 15 reports, and 34 of the 34 threats were reported in the twelve months to 2026-07.

How adversaries use it

T1120 Peripheral Device Discovery is catalogued by MITRE ATT&CK under the Discovery tactic in the Enterprise matrix. Threadlinqs maps 34 of 2623 tracked threats (1.3%) to it; by severity that is 6 critical, 25 high, 3 medium.

Threats that use T1120 most often also use T1041 Exfiltration Over C2 Channel (24 threats), T1082 System Information Discovery (24 threats), T1027 Obfuscated Files or Information (20 threats), T1059 Command and Scripting Interpreter (20 threats), T1005 Data from Local System (18 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.

24 tracked threat actors appear in the threats that use T1120; the most frequent are UNC1549 (2), APT28 (1), APT36 (1), APT37 (1), APT38 (1).

Data sources

Telemetry that can reveal T1120, per MITRE ATT&CK.

  • Command — Command Execution
  • Process — OS API Execution, Process Creation

Threat actors using it

Tracked threats

The 30 most recent of 34 tracked threats that use T1120.

Detection coverage

Threadlinqs maintains 15 detection rules mapped to T1120 (SPL 3, KQL 3, Sigma 9). Rule content is available to Blue tier accounts and above; this page shows counts only.

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