Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 8b34a82460ecbea7…

MALICIOUS

Office (OLE)

40.5 KB Created: 2007-09-07 18:10:00 Authoring application: Microsoft Word 11.2
MD5: 8e99cb3308b2f9b7f39e434d8e5960b5 SHA-1: 3b9fe8bb79d550cc76ca37e9f44a90ab0fbf46e5 SHA-256: 8b34a82460ecbea72316b186927b0c4fd47a5aac5bf0ab95d040e7743d5fdab2
180 Risk Score

Malware Insights

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

The file is a Microsoft Word document containing VBA macros, specifically a Document_Open macro, which is a common delivery mechanism for malware. ClamAV signatures identify it as 'Doc.Trojan.Thus-8'. The document body presents a plausible-sounding absentee report, likely intended to distract the user while the malicious macro executes. No specific scripts were extracted for further analysis, but the presence of the Document_Open macro and the ClamAV detection strongly suggest malicious intent.

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
148463b71af2433c061c528c6bb7ae214dfa6ef6dc4d157d2709c1351df19400		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2349 bytes
Detection
ClamAV: Doc.Trojan.Thus-8
Obfuscation or payload: unlikely

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