T1114.001 Local Email Collection
sub-techniqueEnterpriseAdversaries may target user email on local systems to collect sensitive information. Files containing email data can be acquired from a user’s local system, such as Outlook storage or cache files. Outlook stores data locally in offline data files with an extension of.ost. Outlook 2010 and later supports.ost file sizes up to 50GB, while earlier versions of Outlook support up to 20GB. IMAP accounts in Outlook 2013 (and earlier) and POP accounts use Outlook Data Files (.pst) as opposed to.ost, whereas IMAP accounts in Outlook 2016 (and later) use.ost files. Both types of Outlook data files are typically stored in `C:\Users\<username>\Documents\Outlook Files` or `C:\Users\<username>\AppData\Local\Microsoft\Outlook`.
platforms
Platforms this applies to.
tactics
ATT&CK tactics this technique serves.
sub-technique of
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mitigations
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detected by (4)
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countered by (D3FEND)
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Detect
Isolate
Deceive
NIST CSF 2.0 — areas of relevance (Protect / Detect)
NIST CSF 2.0 areas this most relates to (evidence-ranked).
- DE.CMContinuous Monitoringmoderate · backed by 3 of 9 mapped controls
- ID.AMAsset Managementmoderate · backed by 3 of 9 mapped controls
- PR.AAIdentity Management, Authentication, and Access Controlmoderate · backed by 3 of 9 mapped controls
Derived from MITRE CTID (Apache-2.0) and the NIST 800-53 ↔ CSF crosswalk (public domain). Indicative relevance along the Protect/Detect axis — not a compliance assessment or coverage claim.
mitigating controls (9)
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groups (9)
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software (11)
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campaigns (1)
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Detected by (Sigma) (1)
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