Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 66c117d7e0b07e52…

MALICIOUS

Office (OLE)

1.03 MB Created: 2009-04-28 14:22:00 Authoring application: Microsoft Macintosh Word
MD5: c209e4ab918facc7f770addb2139df05 SHA-1: ae721098033f5aa94c5bf90fdbf29fcb207c6e10 SHA-256: 66c117d7e0b07e52ca0ae8d13a0582691ebc214871c27a068cb94e3b13c772cf
182 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-8'. It contains VBA macros, including a 'Document_Open' macro, which is a common technique for executing malicious code upon opening the document. The script attempts to copy itself to the Normal template and other open documents, likely to ensure persistence and execution.

Heuristics 5

  • 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
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.ozemail.com.au/~afactorR��$
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
6cebe72d9808313a9c55b49f01ada15b0e62478f34b48b3401c5c81cdbefb331		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2337 bytes
Detection
ClamAV: Doc.Trojan.Thus-8
Obfuscation or payload: unlikely

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