Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 e5614f286e261a9f…

MALICIOUS

Office (OLE)

33.5 KB Created: 2010-01-07 19:33:00 Authoring application: Microsoft Word 10.1
MD5: ce0a5de91dbe5e15a36d5cc1b1bc2a4c SHA-1: dfd60c25efd782ff906cfe8173d5ccf23b4b3355 SHA-256: e5614f286e261a9ff6a78b5f6caa8ebebf09872283827937608e76a54872319e
180 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic 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, identified as Doc.Trojan.Thus-8. The document body presents a seemingly legitimate application process for banner usage, designed to lure the user into enabling macros, which would then likely trigger the execution of the embedded malicious code.

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
44aff278df889053b76c656b49cad59a005e476cf5a97c6b15fc094b52fce002		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2371 bytes
Detection
ClamAV: Doc.Trojan.Thus-8
Obfuscation or payload: unlikely

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