Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 8e6868c234b4cc19…

MALICIOUS

Office (OLE)

33.0 KB Created: 2007-09-30 17:24:00 Authoring application: Microsoft Word 11.3.5
MD5: b6a0bb646b3d1bfe900ff3440dc58e53 SHA-1: 9b21d5595f57fb3e4f00cf0a1b8218e3dbf2101f SHA-256: 8e6868c234b4cc198faa71218363429145eceffea44da480515563509ff81fb4
180 Risk Score

Malware Insights

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

The file is an Office document containing VBA macros, specifically a Document_Open macro, which is a common technique for initiating malicious activity upon opening. The presence of the Document_Open macro and the ClamAV detection as 'Doc.Trojan.Thus-5' strongly suggest that the macros are designed to execute malicious code. The document body content appears to be academic material, likely a lure to encourage the user to enable macros. The primary IOC is the embedded macro file itself.

Heuristics 4

  • 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

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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