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

Static analysis result for SHA-256 74dfafe2d478bc41…

MALICIOUS

Office (OLE) / .DOC

56.0 KB Created: 2007-04-26 00:15:00 Authoring application: Microsoft Word 11.3.5
MD5: fe84b16426951f7f3c531d5276f78775 SHA-1: 940b91df7df81981ad866a58e2d470abd0e357f1 SHA-256: 74dfafe2d478bc417025e5dbd39cb4d09c6a9e7dfdc1812cb09a6b64760f31cf
182 Risk Score

Malware Insights

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

The file is a malicious Word document containing VBA macros, specifically a Document_Open macro, which is a common technique for initial execution. The macro likely attempts to download and execute a second-stage payload, as indicated by the ClamAV detections. While several URLs are present, their reputation is unknown or benign, and the primary threat stems from the macro's execution capability.

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.workout-routines.com/routexercises.html
    • http://www.intelihealth.com/cgi-bin/makelog.pl?pqsname=IHPhysical&mode=p&graphics=1&p=%7Ebr,IHW%7C%7Est,334%7C%7Er,WSIHW000%7C%7Eb,*%7C&&WH=/IH/&MIval=ihtIH
    • http://www.davedraper.com/workout-routines.html
    • http://www.nutrio.com/servlet/nutrio?page=14&cat=0
    • http://exercise.about.com/od/exerciseforbeginners/l/blfitquiz.htm

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
8fd64a9fd248372ccfd0ec25ae80012332a41b46ec60b12a1b42f1e8fb27117c		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 4245 bytes
Detection
ClamAV: Doc.Trojan.Marker-2
Obfuscation or payload: unlikely

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