Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 a7b241f4ddfa9c66…

MALICIOUS

Office (OLE)

42.0 KB Created: 2009-06-08 12:26:00 Authoring application: Microsoft Word 11.3.8
MD5: cd6b43bbb47674d5ae265a82a0ce92c3 SHA-1: b9f92b1b55fd0af2e3ae5a9cf60eb04553e99485 SHA-256: a7b241f4ddfa9c663f64a1f5c28cbb63ddcf560531306caa8ecf69b60d86d408
180 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic for Applications

The file is a Microsoft Word document containing VBA macros, specifically a Document_Open macro, which is a common technique for initial execution. The document body presents a grading rubric, a common lure to trick users into enabling macros. The presence of a Document_Open macro strongly suggests it's designed to execute malicious code upon opening. The ClamAV detection 'Doc.Trojan.Thus-8' further supports its malicious nature.

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
ab38d5715787b7711b582609e10902f43d14cd400f2a740d07f11bcab3501f2c		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2399 bytes
Detection
ClamAV: Doc.Trojan.Thus-8
Obfuscation or payload: unlikely

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