Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 39ade2f1f73dd3cf…

MALICIOUS

Office (OLE)

35.5 KB Created: 2007-08-22 15:00:00 Authoring application: Microsoft Word 11.3.5
MD5: 6da6d5315aac9600b4ba2e40d22e01ff SHA-1: 18f9ec64b964e3a69fca85b85461598bf2ace0ff SHA-256: 39ade2f1f73dd3cf3c177994b15e0344f0a1e7bb68d98d907223f660b01ea007
180 Risk Score

Malware Insights

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

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 as a school science department course expectation, likely a lure to encourage users to enable macros. The presence of VBA macros and the Document_Open trigger strongly suggest an attack pattern involving macro-based execution of malicious code.

Heuristics 4

  • ClamAV: Doc.Trojan.Eight941-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Eight941-1
  • 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
549bc4cc40e974433e8de5583b5f6ce79c29971cca271e66c629ee6fc496ffe1		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2844 bytes
Detection
ClamAV: Doc.Trojan.Eight941-1
Obfuscation or payload: unlikely

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