Malicious Office (OLE) / .DOC — malware analysis report

Static analysis result for SHA-256 ace23fc729d3fa4b…

MALICIOUS

Office (OLE) / .DOC

472.5 KB Created: 2006-09-18 15:03:00 Authoring application: Microsoft Word 11.1
MD5: 79d2d0abc591df64f9f4f342b05a6313 SHA-1: e70b191dbb6d005bdcab609cc838e4aaccc56fce SHA-256: ace23fc729d3fa4b3081db53a6ccbf0f420ced1814bdb9ed9a528e157fd688a0
200 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell

The file is a Microsoft Word document containing VBA macros, including a Document_Open macro, which is a common technique for executing malicious code upon opening. ClamAV detections indicate it is a known trojan. The document body presents a plausible lure for an attendance log, aiming to encourage macro enablement. No specific IOCs like URLs or executable payloads were extracted, limiting further analysis of the payload.

Heuristics 6

  • 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
  • Excel 4.0 (XLM) macro sheet present medium OLE_XLM_AUTOOPEN
    Workbook contains an Excel 4.0 macro sheet sub-stream — XLM is rarely seen in modern legitimate workbooks and was a major Office malware vector during 2020-2022.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.apple.com/DTDs/PropertyList-1.0.dtd
    • http://ns.adobe.com/xap/1.0/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/iX/1.0/
    • http://ns.adobe.com/exif/1.0/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/photoshop/1.0/
    • http://ns.adobe.com/tiff/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://purl.org/dc/elements/1.1/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
9651624cb097012c67881e1ed190f108b816a96ca9bfc5f8ddebd053bec2a6f8		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 4273 bytes
Detection
ClamAV: Doc.Trojan.Marker-2
Obfuscation or payload: unlikely

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