Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 9cc6e2310cd5e913…

MALICIOUS

Office (OLE)

34.0 KB Created: 1998-06-29 18:20:00 Authoring application: Microsoft Word 8.0
MD5: 1ac9ce9190d5000a8aa40f5d71432bbb SHA-1: b38ec03fa39b51111b22949ebe1dfca669ce08c6 SHA-256: 9cc6e2310cd5e91343de224d5a46ce1ab774f36099dffc311d7a86216e3d27ed
180 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The file is an Office document containing VBA macros, specifically triggering an Auto_Close macro. Heuristics indicate the presence of malicious VBA code, and ClamAV detections identify it as Win.Trojan.Pivis-2 and Win.Trojan.C-286 on an extracted artifact. The Auto_Close macro suggests an intent to execute code automatically when the document is closed, likely to download and run a second-stage payload.

Heuristics 4

  • ClamAV: Win.Trojan.Pivis-2 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Pivis-2
  • 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.
  • Auto_Close macro high OLE_VBA_AUTOCLOSE
    Auto_Close 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
0833f22e3d0863a2ad70255578eac28872d867dedc8f9217929227db48518b08		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 13434 bytes
Detection
ClamAV: Win.Trojan.C-286
Obfuscation or payload: unlikely

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