Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 2401b53daae6cc0d…

MALICIOUS

Office (OLE)

53.5 KB Created: 2010-02-06 14:08:00 Authoring application: Microsoft Word 11.5.3
MD5: 5b41d078f96eefe02c3d35366b8015af SHA-1: 0266e5c64cb04760d72df926cca5ec0dd42f139d SHA-256: 2401b53daae6cc0db336146e8d789d1f327a1026cdd84b4a75631ec15bbeed0a
180 Risk Score

Malware Insights

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

The file is a Microsoft Word document containing a physical education activity log. It has a high-confidence heuristic firing for OLE_VBA_DOCOPEN, indicating the presence of a Document_Open macro. This macro is likely designed to execute malicious code upon opening the document, aiming to download and execute a second-stage payload. The ClamAV detection of 'Doc.Trojan.Thus-8' further supports its malicious nature.

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
043b348f539545938d9f6246f775bae2ec66691cac0cbe16c4f49d14cc6c6487		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2385 bytes
Detection
ClamAV: Doc.Trojan.Thus-8
Obfuscation or payload: unlikely

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