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ATT&CK techniqueResource Development

T1586.002 Email Accounts

Resource DevelopmentEnterpriseSub-technique

As of 2026-10-05, T1586.002 (Email Accounts) appears in 32 tracked threats, first reported 2026-02-27 and most recently 2026-10-02, with linked actors including APT38, Cl0p, Gamaredon; it most often appears alongside T1566.002 (Spearphishing Link).

Tracked threats
327 critical, 15 high, 10 medium
First seen
2026-02-27
Last seen
2026-10-02
Threat actors
21In the threats using it
Detection rules
37Blue tier and above

Data as of:

Activity timeline

T1586.002 first appeared in tracked threats on and was most recently reported on . The busiest month was 2026-07 with 7 reports, and 32 of the 32 threats were reported in the twelve months to 2026-10.

How adversaries use it

T1586.002 Email Accounts is catalogued by MITRE ATT&CK under the Resource Development tactic in the Enterprise matrix, as a sub-technique of T1586 Compromise Accounts. Threadlinqs maps 32 of 2623 tracked threats (1.2%) to it; by severity that is 7 critical, 15 high, 10 medium.

Threats that use T1586.002 most often also use T1566.002 Spearphishing Link (20 threats), T1583.001 Domains (19 threats), T1657 Financial Theft (14 threats), T1684.001 Impersonation (14 threats), T1005 Data from Local System (12 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.

21 tracked threat actors appear in the threats that use T1586.002; the most frequent are APT38 (2), Cl0p (2), Gamaredon (2), Sapphire Sleet (2), Stardust Chollima (2).

Mitigations

MITRE ATT&CK lists 1 mitigation for T1586.002.

Threat actors using it

Tracked threats

The 30 most recent of 32 tracked threats that use T1586.002.

Detection coverage

Threadlinqs maintains 37 detection rules mapped to T1586.002 (SPL 11, KQL 16, Sigma 10). Rule content is available to Blue tier accounts and above; this page shows counts only.

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

Parent technique

T1586 Compromise Accounts — 140 tracked threats at the technique level.