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ATT&CK techniqueExfiltration (Mobile)

T1646 Exfiltration Over C2 Channel

Exfiltration (Mobile)Mobile

As of 2026-10-05, T1646 (Exfiltration Over C2 Channel) appears in 36 tracked threats, first reported 2026-02-16 and most recently 2026-09-23, with linked actors including NSO Group, APT37, Intellexa Consortium; it most often appears alongside T1660 (Phishing).

Tracked threats
364 critical, 29 high, 2 medium, 1 low
First seen
2026-02-16
Last seen
2026-09-23
Threat actors
3In the threats using it
Detection rules
83Blue tier and above

Data as of:

Activity timeline

T1646 first appeared in tracked threats on and was most recently reported on . The busiest month was 2026-07 with 12 reports, and 36 of the 36 threats were reported in the twelve months to 2026-09.

How adversaries use it

T1646 Exfiltration Over C2 Channel is catalogued by MITRE ATT&CK under the Exfiltration (Mobile) tactic in the Mobile matrix. Threadlinqs maps 36 of 2623 tracked threats (1.4%) to it; by severity that is 4 critical, 29 high, 2 medium, 1 low.

Threats that use T1646 most often also use T1660 Phishing (27 threats), T1426 System Information Discovery (26 threats), T1437 Application Layer Protocol (22 threats), T1418 Software Discovery (21 threats), T1513 Screen Capture (21 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.

3 tracked threat actors appear in the threats that use T1646; the most frequent are NSO Group (2), APT37 (1), Intellexa Consortium (1).

Threat actors using it

Tracked threats

The 30 most recent of 36 tracked threats that use T1646.

Detection coverage

Threadlinqs maintains 83 detection rules mapped to T1646 (SPL 33, KQL 25, Sigma 25). Rule content is available to Blue tier accounts and above; this page shows counts only.

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