Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 3c38e64a1adefd6e…

MALICIOUS

RTF / .DOC

401.3 KB First seen: 2024-05-22
MD5: 2ea1e33700cfa40e2a3b535e615f3c8d SHA-1: 15b393245ccd1058626f82c45684cb734511dd58 SHA-256: 3c38e64a1adefd6e869b82f1e812fa1a7c45017c1081d24ea00e153e7bcbf61a
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 uses an ".objupdate" directive, indicating an attempt to activate embedded objects. The document body presents a lure related to financial audits, instructing the user to 'click Enable editing', a common tactic to bypass security measures and execute embedded malicious content. No specific scripts or URLs were extracted, but the heuristics strongly suggest a macro-based or OLE-based execution of a secondary payload.

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_off000160da.bin
6b62237cdf2da857e28b49694b734510fca4c2983c1d61c337fc203cc956330c
rtf-objdata-decoded RTF \objdata at offset 0x160DA 1731 bytes