Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 01b32cf111da329e…

MALICIOUS

Office (OLE)

44.5 KB Created: 2010-02-26 22:47:00 Authoring application: Microsoft Word 11.0
MD5: 246dca2804e830f01f8bbfbdf8370a1c SHA-1: 297d802fe4a7eb2e22c8d40ab12e77e44479854e SHA-256: 01b32cf111da329eae574863f11372143df10c74c0b071dacc754d127dd4fae8
180 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1546.001 Event Triggered Execution: Sign of the Times

The sample is an Office document containing VBA macros, specifically a Document_Open macro, which is a common technique for initial execution. The ClamAV detection 'Doc.Trojan.Thus-8' strongly indicates malicious intent. The VBA code attempts to disable virus protection and copy itself to the Normal template, suggesting an effort to establish persistence and ensure execution.

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
af55229a1ada67e6b196c7ac73b9d803334581ae61bc0f450f03ba895097df20		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2372 bytes
Detection
ClamAV: Doc.Trojan.Thus-8
Obfuscation or payload: unlikely

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