Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 f2ffa5fdf75b328e…

MALICIOUS

Office (OLE)

1.93 MB Created: 2005-10-17 01:19:00 Authoring application: Microsoft Word 10.1
MD5: dcb901c54972f24cfb2ab375570df482 SHA-1: 9ceabe0a2a78baafb43b74eb08e88f1f788034f2 SHA-256: f2ffa5fdf75b328e63ae8d0754acd194c8ca9b48ede893f667affd6a7a589df3
180 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic for Applications T1204.002 Malicious File

The file is a Microsoft Word document containing VBA macros, specifically a Document_Open macro, which is a common technique for initial execution. The document body presents an informational text about squids, likely as a lure to encourage the user to enable macros. The presence of embedded URLs, though not directly used in the provided script excerpt, suggests potential for further malicious activity. The ClamAV detection 'Doc.Trojan.Thus-8' further supports the malicious classification.

Heuristics 5

  • ClamAV: Doc.Trojan.Thus-8 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Thus-8
  • 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.marinelifephoto.com/inverts_pg1/images/CAI-14.jpg
    • http://users.ncable.net.au/~anewton/squidpygmy.jpg
    • http://www.marinelifephoto.com/inverts_pg1/images/CAI-14.jpgThe
    • http://users.ncable.net.au/~anewton/squidpygmy.jpgThe

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
a2922200ba9db55edc04516f97e7f54df0e423fb423140ebbf977376c061a600		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2392 bytes
Detection
ClamAV: Doc.Trojan.Thus-8
Obfuscation or payload: unlikely

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