Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 69ae0f6da3edcff1…

MALICIOUS

Office (OLE)

40.5 KB Created: 2002-04-30 16:22:00 Authoring application: Microsoft Word 9.0
MD5: 916f033e9d6e70d6f21772481f32cc97 SHA-1: 67104ed6f3174571a5cb6e6c2aac1cef44936779 SHA-256: 69ae0f6da3edcff126075777c2ff7ed63783547e791f20e153aca5a309497f12
180 Risk Score

Malware Insights

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

The sample is identified as malicious by ClamAV with the signature Doc.Trojan.Thus-10. It contains a Document_Open VBA macro that attempts to infect the Normal template and other open documents, indicating a self-propagating macro-based threat. The macro's obfuscated nature and the presence of the 'Thus_001' comment suggest a trojanized document designed for distribution.

Heuristics 4

  • ClamAV: Doc.Trojan.Thus-10 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Thus-10
  • 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
d38812a0d2e4d8975df3c5c9fe79707a7643b33307aac4f772f8f045e17768ba		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2313 bytes
Detection
ClamAV: Doc.Trojan.Thus-10
Obfuscation or payload: unlikely

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