Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 76ab0a5107b63c9b…

MALICIOUS

RTF / .DOC

62.9 KB First seen: 2023-09-04
MD5: cdab021ea125725f17b96400abd9bf3a SHA-1: 7b3485e08f96d7c202d2d31e2e643416b4ada3f4 SHA-256: 76ab0a5107b63c9bbc9d148222f7c5390ca74a8d813d7b6edeab4b8e9942fb6e
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 an attempt to activate embedded objects. The heuristic SE_ENABLE_LURE confirms the document instructs the user to enable editing, a common tactic for macro-based malware delivery. The content discusses financial audits to appear legitimate, masking the malicious intent.

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_off000034f7.bin
15eb09aac557112939930205988ccfc6cc0d39a06061dffd2e787a370d905103
rtf-objdata-decoded RTF \objdata at offset 0x34F7 3662 bytes