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

Static analysis result for SHA-256 2841a17f8be3eda1…

MALICIOUS

Office (OLE) / .DOC

63.0 KB Created: 2009-01-09 20:42:00 Authoring application: Microsoft Word 11.5.3
MD5: 1ad00ebd499274ead1b8a8d795eb1832 SHA-1: 4411db17982a1ea1605762e653b425181dc1c135 SHA-256: 2841a17f8be3eda1f990c6cfff83f01cbbaa45569993f0cf4a6bbf77b4b47b17
180 Risk Score

Malware Insights

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

The file is a Microsoft Word document containing VBA macros, specifically a Document_Open macro, which is a common technique for initial execution. ClamAV detections indicate it is a known malicious document. The document body presents a plausible-looking college course syllabus to trick the user into enabling macros, which would then execute the malicious 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
1369f37ce29668c1389f1ab64d8a1da044e68bad0c64fe5abb00c02611fbba3e
vba-macro oletools.olevba.extract_macros (decoded VBA source) 4243 bytes
Detection
ClamAV: Doc.Trojan.Marker-2
Obfuscation or payload: unlikely