Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 87a571248cc43821…

MALICIOUS

Office (OLE)

39.0 KB Created: 2007-11-27 15:15:00 Authoring application: Microsoft Word 11.3.5
MD5: da60900b1574c87ff3bdf7984a04712d SHA-1: 8d37e1ee49232d4d2c0bd5fb28ec695c5b6b3165 SHA-256: 87a571248cc43821b9657b9823dc3484df9f9299e93d10f7674845efe45e9662
180 Risk Score

Malware Insights

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

The file contains VBA macros, including a Document_Open macro, which is a common technique for executing malicious code upon opening a document. The macro attempts to disable virus protection and modify document properties, suggesting an intent to evade detection and potentially download or execute further payloads. The presence of ClamAV detections further supports its malicious nature.

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
598c25bc17393868546b969d31af61ccf18dd312003b33a7cddd6c7d10add326		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 4258 bytes
Detection
ClamAV: Doc.Trojan.Marker-2
Obfuscation or payload: unlikely

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