Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 73bccef5c926cefd…

MALICIOUS

RTF / .DOC

228.2 KB
MD5: eda54697e6ab436600b8b74102833d7e SHA-1: fe3b1e8337728c74600eab9cb5c9f073e7c04ced SHA-256: 73bccef5c926cefd41f82a329a8ba732bf59195f19c67498ccf162caa6410de1
80 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The RTF document contains embedded OLE objects, indicated by RTF_OBJDATA and RTF_OBJEMB heuristics. The RTF_OBJUPDATE heuristic suggests that these objects are configured to automatically activate, which is a common technique for exploiting vulnerabilities or delivering malicious payloads. This points to an attack pattern focused on client-side exploitation, likely delivered as a spearphishing attachment.

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
  • Embedded OLE object medium RTF_OBJEMB
    RTF contains \objemb — embedded OLE object

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00001532.bin
4829b484f45db4a3e15e860d883694c6fa94c8355b54cec9605dae9c62ba1ce4
rtf-objdata-decoded RTF \objdata at offset 0x1532 3637 bytes