Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 2cfbee02e630edec…

MALICIOUS

Office (OLE)

25.0 KB Created: 2009-09-16 18:46:00
MD5: 434cba13bc806804fdc7a6d68ae892c0 SHA-1: a8ecba545d47590f6c106cf5eeec173cbfbfd959 SHA-256: 2cfbee02e630edece7a097c00608d02c1ba7ad8d843f419315aa6c0a24f82431
180 Risk Score

Malware Insights

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

The file is an OLE document containing VBA macros, specifically a Document_Open macro, which is a common technique for initial execution. ClamAV signatures indicate it is a known trojan. The macro source is 2274 bytes, suggesting it contains executable code. The document body is minimal, providing no contextual lure.

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
44c8e56af833df1561d8542ac02f0513a9efaed8fe87ad6afbdd5ec6233285a4		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2274 bytes
Detection
ClamAV: Doc.Trojan.Thus-10
Obfuscation or payload: unlikely

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