Written Content
Where this stands
No Sigma rule can address this — the telemetry MITRE names has no Sigma logsource behind it.
This happens on infrastructure you do not own, so it never reaches your logs. MITRE's own guidance is internet scanning and threat intelligence, not log analysis.
What the technique is
Adversaries may create or tailor written materials to support targeting and malicious operations. Content may include phishing lures, fraudulent financial communications, fabricated job postings, fabricated employment credentials and documentation, decoy documents, social media persona content, and supporting narratives used to sustain fabricated personas over time. Content may be authored manually, commissioned through third parties, or produced using AI-assisted tools. Written materials may impersonate legitimate government correspondence, diplomatic communications, or internal organizational documents to support targeting efforts. AI-assisted tools may also be used to tailor content to specific targets, industries, or regions. For example, adversaries may leverage AI to translate content into a target's native language or mimic the communication style of trusted senders. Written content produced through these methods may be used in support of other techniques, such as Phishing, Spearphishing via Service, Phishing for Information, Internal Spearphishing, Social Engineering, Financial Theft, or Establish Accounts. Written content does not include malicious code or scripts; for development of malicious code and scripts, see Develop Capabilities.
Read it on attack.mitre.orgWhat MITRE says you would watch
- AN2060
Much of this takes place outside the visibility of the target organization, making detection difficult for defenders. Detection efforts may be focused on related stages of the adversary lifecycle, such as during Initial Access.
Technique names and descriptions © MITRE ATT&CK®, CC BY 4.0. Not endorsed by MITRE.