Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 3f85147877b746ec…

MALICIOUS

Office (OLE)

58.0 KB Created: 2007-10-08 15:45:00 Authoring application: Microsoft Word 11.3.5
MD5: 5ef2fada1855ee1c5b79fe2c685db447 SHA-1: eb97e0fddabac45838ff587e1aa8c108fb2da5d7 SHA-256: 3f85147877b746ec39bd6c522fad731687d01667814103d5b6e6cc3efaa7849b
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.005 Visual Basic

The file is an Office document containing VBA macros, specifically a Document_Open macro, which is a common delivery mechanism for malware. The document body presents as an academic assignment, likely intended to trick the user into enabling macros. Although the URLs present are benign, the presence of macros and the ClamAV detection strongly suggest malicious intent. No specific malware family could be identified.

Heuristics 5

  • ClamAV: Doc.Trojan.Thus-5 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Thus-5
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.apa.org/journals/jacobson.html
    • http://thefci.syr.edu/articles/Contested_Words.htm

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
5f3a97e4fb281c182a72f372fc3fa336cfd5e05720d991c712b1da70b22d3ac6		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2343 bytes
Detection
ClamAV: Doc.Trojan.Thus-5
Obfuscation or payload: unlikely

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