Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 1acea777279c733a…

MALICIOUS

RTF / .DOC

147.1 KB First seen: 2022-10-21
MD5: 6a482d94834a06b712b0c1e5ebe62a3f SHA-1: 70b2bd8cf084987edb9cf98f27439086843fef7b SHA-256: 1acea777279c733a8b266cca571b4277e3c54f0c6f7ba5d341215cf77d6e68ce
80 Risk Score

Malware Insights

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

The RTF document contains OLE object data and an objupdate directive, indicating it's designed to activate embedded objects. The heuristic 'SE_ENABLE_LURE' confirms the document explicitly instructs the user to enable editing, a typical social engineering tactic to bypass security measures and execute malicious content. No scripts were extracted, but the structure strongly suggests a macro-based or exploit-driven delivery mechanism.

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_off0000156b.bin
2b5e04440094284eafccdfbd52f0c46a0242815f28be3bc0e1f5a57212a56442
rtf-objdata-decoded RTF \objdata at offset 0x156B 1509 bytes