Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 79fd4e87db200c0b…

MALICIOUS

Office (OLE)

44.0 KB Created: 2010-04-08 13:43:00 Authoring application: Microsoft Word 11.5.6
MD5: 63079d1d1f1ee5d2d4a4b48ee2adc404 SHA-1: 70ca1cc1265c45c12237b0a8f5889bdc46e4a935 SHA-256: 79fd4e87db200c0bf3bca0dec01a696754a687a58564d2ad02e3d305ebc7c519
180 Risk Score

Malware Insights

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

The file is a Microsoft Word document containing VBA macros, specifically a Document_Open macro, which is a common delivery mechanism for malware. The document body is disguised as a programming assignment, likely to trick the user into enabling macros. ClamAV detections further confirm its malicious nature. No specific IOCs were extracted beyond the presence of macros.

Heuristics 4

  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
4d840735f64370eed491ae174d4c3cebc63d105512970d4d44c50b8d8ee19f18		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 4261 bytes
Detection
ClamAV: Doc.Trojan.Marker-2
Obfuscation or payload: unlikely

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