Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 119114dd451e2d9a…

MALICIOUS

Office (OLE)

35.5 KB Created: 2003-05-13 09:35:00 Authoring application: Microsoft Word 10.1
MD5: bffab352954ebc5d799e997d139b19f8 SHA-1: 5aae28406bcf87f77a150480912f40b1c67af84c SHA-256: 119114dd451e2d9a455cd057c7786172286a4c8f7d13540dafde00ab9f2576a9
180 Risk Score

Malware Insights

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

The sample contains VBA macros, specifically a Document_Open macro, which is a common technique for executing malicious code upon opening a document. The ClamAV detection 'Doc.Trojan.Thus-8' strongly indicates malicious intent. The macro appears to be designed to download and execute a secondary payload, although the exact mechanism is truncated.

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
751424cd5c191d02c834ae869229a0691bef79ca2be445c5356c5487df2955da		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2393 bytes
Detection
ClamAV: Doc.Trojan.Thus-8
Obfuscation or payload: unlikely

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