Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 a569dc734dba1a94…

MALICIOUS

Office (OLE)

39.0 KB Created: 2009-09-04 14:31:00 Authoring application: Microsoft Word 11.0
MD5: a47a707cd099eb0381073c846128ce4b SHA-1: 4cc952c3eb26be67bd3483ec023df8a33fc13f94 SHA-256: a569dc734dba1a94270c6325d56a034c190d9a13f11dbbbf927ca57e28eb1ce7
180 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The file is identified as malicious by ClamAV with critical heuristics firing for OLE VBA macros and a Document_Open macro. The document body presents a seemingly innocuous request for analysis of Edgar Allan Poe's 'The Raven', which serves as a lure. The presence of a 4237-byte VBA macro, specifically triggered by Document_Open, indicates that the macro is designed to execute automatically upon opening the document, likely to download and execute a secondary payload.

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
1af8fe9d6d207df24d7e3c46cd908e9277e9f236f57900f892fcf69496f39cb9		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 4237 bytes
Detection
ClamAV: Doc.Trojan.Marker-2
Obfuscation or payload: unlikely

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