Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 67a52dc501c243ef…

MALICIOUS

Office (OLE)

54.5 KB Created: 2010-04-12 14:37:00 Authoring application: Microsoft Macintosh Word
MD5: 1472128d6ed94dd67acded19f87e10be SHA-1: 5d1f621a4e91a42ac9b93d6a205fe078b618895e SHA-256: 67a52dc501c243ef5a12a1c7bd395d8838cf1305546d099f714eab8b76352ea0
182 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV with the signature 'Doc.Trojan.Thus-8'. It contains a 'Document_Open' VBA macro which is a common technique for executing malicious code automatically when the document is opened. The macro appears to copy itself to the Normal template and potentially other documents, suggesting an attempt to establish persistence or spread. The presence of VBA macros and the 'Document_Open' event strongly indicates a malicious document intended to be delivered via spearphishing.

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://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
cc485c8c32f6cbe3ede6f17c27fbe5979c9646fa6dc93242dabaa5d072082eb4		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2307 bytes
Detection
ClamAV: Doc.Trojan.Thus-8
Obfuscation or payload: unlikely

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