Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 774f3c4a9cd289b7…

MALICIOUS

RTF / .DOC

55.8 KB First seen: 2023-09-04
MD5: 02ff402cb0889f087b8d8f461efbea4d SHA-1: 12757a1039e387daf452463d748cf1f5a82bcbc0 SHA-256: 774f3c4a9cd289b7303bc8097c9a2b087c00e7ad4a88c9f329995cec48b7730d
80 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1566 Phishing T1566.001 Phishing: Spearphishing Attachment

The RTF document contains OLE object data and an \objupdate directive, indicating it's designed to activate embedded objects. The 'SE_ENABLE_LURE' heuristic confirms the document instructs the user to enable editing, a common tactic for macro-based malware delivery. The content itself discusses financial audits to appear legitimate, masking the malicious intent of enabling further execution.

Heuristics 3

  • \objupdate forces OLE activation high RTF_OBJUPDATE
    RTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
  • OLE object data medium RTF_OBJDATA
    RTF contains 1 \objdata section(s) — embedded OLE objects
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00003a45.bin
0f9d8eb785531bc028ff1fb9522b9ae38cccd3e32054115e29708bb7edda54c8
rtf-objdata-decoded RTF \objdata at offset 0x3A45 3661 bytes