Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 d4b1109280dc066a…

MALICIOUS

Office (OLE)

565.5 KB Created: 2010-05-25 18:14:00 Authoring application: Microsoft Word 11.5.5
MD5: 9f20930cae8da9eabc5c7aa8cdca77be SHA-1: 65a6517a152d46bc99c9b917fd3a04f765494756 SHA-256: d4b1109280dc066a5594259f424d8ec0318b55959823077b7ff549797848c55f
180 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The file is an Office document containing VBA macros, specifically a Document_Open macro, which is a common delivery mechanism for malware. ClamAV detections indicate it is a known malicious document. The document body itself is benign, describing a summer reading program, suggesting the malicious content is entirely within the macros. No specific family could be identified, but the presence of a Document_Open macro suggests it attempts to execute malicious code upon opening.

Heuristics 5

  • 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
  • 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/exif/1.0/
    • http://ns.adobe.com/tiff/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/photoshop/1.0/
    • http://www.iec.ch

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
9d26b8da557c0ffac17d051f7f6e103ba8fc16de97c3b1d2dc0507e4702c59bb		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 4218 bytes
Detection
ClamAV: Doc.Trojan.Marker-2
Obfuscation or payload: unlikely

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