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

Static analysis result for SHA-256 4ed35d52357da869…

MALICIOUS

Office (OLE) / .DOC

771.5 KB Created: 2010-07-09 14:58:00
MD5: ac1581a50873d3ebdab3dc5fb6ffb407 SHA-1: 862ec14d9686ac9e40e2131d552c891e58965320 SHA-256: 4ed35d52357da869c135b62dc095fae09cf4b20ca577b0fce773e6427a257dbd
180 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The file is a Microsoft Office document containing VBA macros, specifically triggering a Document_Open macro. ClamAV detections indicate it is a known malicious document (Doc.Trojan.Thus-8). The presence of a Document_Open macro strongly suggests an attempt to automatically execute malicious code upon opening the document, likely for downloading and executing a secondary payload. No specific URLs or executable artifacts were directly extracted, limiting further analysis of the payload.

Heuristics 5

  • 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
  • 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://ns.adobe.com/xap/1.0/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/g/img/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#
    • http://www.iec.ch

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
9536455c299d3c93226cffcb0505be87942966d0c930743daf867737c3f4e0cd		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2354 bytes
Detection
ClamAV: Doc.Trojan.Thus-8
Obfuscation or payload: unlikely

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