Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 a4aa8de3346c908d…

MALICIOUS

Office (OLE)

31.5 KB Created: 2003-05-13 10:28:00 Authoring application: Microsoft Word 10.1
MD5: cb73e9ce533c1538bd994f14629977df SHA-1: d294813df5bbc3f4e0933ffa97d1021b53859ff3 SHA-256: a4aa8de3346c908d22176cee9f8f2077b32440952b444e992a2d02d176ab7e14
180 Risk Score

Malware Insights

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

The file is an Office document containing VBA macros, specifically a Document_Open macro, which is a common technique for initial execution. The document body presents a seemingly innocuous project brief, likely intended to trick the user into enabling macros. The presence of the Document_Open macro strongly suggests the intent is to execute malicious code upon opening the document.

Heuristics 4

  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
751424cd5c191d02c834ae869229a0691bef79ca2be445c5356c5487df2955da		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2393 bytes
Detection
ClamAV: Doc.Trojan.Thus-8
Obfuscation or payload: unlikely

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