Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 48209a04abed70c5…

MALICIOUS

Office (OLE)

30.5 KB Created: 2010-04-23 19:09:00 Authoring application: Microsoft Word 11.5.0
MD5: 58f89a4d4f0c5fc872066c2d9082b78c SHA-1: 9236a3eb61d5be725708e76a38af803dd1d8de6b SHA-256: 48209a04abed70c5c125f06c2b85d0ffd1ff98623f957140ecfac432c6042c9d
180 Risk Score

Malware Insights

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

The file is a Microsoft Word document containing VBA macros, specifically a Document_Open macro, which is a common delivery mechanism for malware. ClamAV signatures indicate it is a known trojan. The presence of the Document_Open macro suggests the intent is to execute malicious code automatically when the document is opened, likely to download and execute a secondary payload. The document body content appears to be unrelated technical notes, suggesting it is a lure.

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
afea726bda2e12062ff0d4e155a299c924a255bdc4071f1133cac8285d7bae4b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2392 bytes
Detection
ClamAV: Doc.Trojan.Thus-8
Obfuscation or payload: unlikely

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