Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 de9c8f0f741cd092…

MALICIOUS

Office (OLE)

32.5 KB Created: 2006-10-20 13:54:00 Authoring application: Microsoft Word 10.0
MD5: 1770033988f8a706d17c6e387d822191 SHA-1: b51f43e190739b401dd39fabade94f1cd57edd42 SHA-256: de9c8f0f741cd09221d2b129d9ad2bcb6f0cf5b8a4932f81c8429e51c899bab6
180 Risk Score

Malware Insights

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

The file is an Office document containing VBA macros, specifically triggering a Document_Open macro. ClamAV identified the file as Doc.Trojan.Thus-8. The presence of a Document_Open macro indicates an attempt to automatically execute malicious code when the document is opened, likely to download and execute a second-stage payload. The document body content appears to be unrelated biographical information, suggesting it is a lure.

Heuristics 4

  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
6ab2261a029f9d9ab697f4c911d4e2e374176c8c995f3ac03e77ca0914d56344		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2383 bytes
Detection
ClamAV: Doc.Trojan.Thus-8
Obfuscation or payload: unlikely

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