Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 146c15e999c3870b…

MALICIOUS

Office (OLE)

217.0 KB Created: 2008-11-19 16:01:00 Authoring application: Microsoft Word 11.3.8
MD5: c35541cdf1223900f4889c558d2a3967 SHA-1: e12807e2405469e5b5fa2c42e12f92c80f216593 SHA-256: 146c15e999c3870b861d06462f31bd624c006900ca6991219d84bbb5d9a6da78
182 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV with multiple critical detections. It contains VBA macros, specifically a Document_Open macro, which is a common technique for initial execution. The macro code, though truncated, suggests it attempts to manipulate document settings and potentially download further content, aligning with a macro-based downloader attack pattern. The presence of the Document_Open macro and the VBA code strongly suggests the initial access vector was likely spearphishing attachment.

Heuristics 5

  • ClamAV: Doc.Trojan.Marker-40 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Marker-40
  • 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.apple.com/DTDs/PropertyList-1.0.dtd

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
d41c9267beb7aeb9002f6cfedc0d926f627e1f4f0feade367b7ea63422dfcbca		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 4225 bytes
Detection
ClamAV: Doc.Trojan.Marker-2
Obfuscation or payload: unlikely

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