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ATT&CK techniqueInitial Access (Mobile)

T1664 Exploitation for Initial Access

Initial Access (Mobile)Mobile

As of 2026-10-10, T1664 (Exploitation for Initial Access) appears in 11 tracked threats, first reported 2026-07-03 and most recently 2026-10-09, with linked actors including NSO Group; it most often appears alongside T1404 (Exploitation for Privilege Escalation).

Tracked threats
112 critical, 7 high, 1 medium
First seen
2026-07-03
Last seen
2026-10-09
Threat actors
1In the threats using it
Detection rules
34Blue tier and above

Data as of:

Activity timeline

T1664 first appeared in tracked threats on and was most recently reported on . The busiest month was 2026-09 with 4 reports, and 11 of the 11 threats were reported in the twelve months to 2026-10.

How adversaries use it

T1664 Exploitation for Initial Access is catalogued by MITRE ATT&CK under the Initial Access (Mobile) tactic in the Mobile matrix. Threadlinqs maps 11 of 2741 tracked threats (0.4%) to it; by severity that is 2 critical, 7 high, 1 medium.

Threats that use T1664 most often also use T1404 Exploitation for Privilege Escalation (7 threats), T1658 Exploitation for Client Execution (7 threats), T1426 System Information Discovery (6 threats), T1409 Stored Application Data (5 threats), T1421 System Network Connections Discovery (5 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.

1 tracked threat actor appear in the threats that use T1664; the most frequent are NSO Group (1).

Threat actors using it

Tracked threats

11 tracked threats use T1664.

Detection coverage

Threadlinqs maintains 34 detection rules mapped to T1664 (SPL 12, KQL 10, Sigma 12). Rule content is available to Blue tier accounts and above; this page shows counts only.

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