Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 86da0ab1832143e8…

MALICIOUS

Office (OLE)

49.0 KB Created: 2006-05-11 01:09:00 Authoring application: Microsoft Word 11.2
MD5: 05f958344cdf81a42c6972c334b90e83 SHA-1: eb7277f8492efbdba72efb0ee65ec30508373014 SHA-256: 86da0ab1832143e8595628d776aac465eaa80b9fca9d4de456d9d2c2ccbfcfe4
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 detections identify it as 'Doc.Trojan.Thus-8'. The presence of the Document_Open macro indicates an attempt to automatically execute malicious code upon opening the document, likely for downloading and executing a secondary payload. No specific family could be identified.

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
90ce42962075fb537f7475542da7b4ee2c504ac1209ee30c080b5bb4fd4df4f6		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2368 bytes
Detection
ClamAV: Doc.Trojan.Thus-8
Obfuscation or payload: unlikely

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