Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 ca243df1bdbd276f…

MALICIOUS

Office (OLE)

59.5 KB Created: 2010-08-10 10:14:00 Authoring application: Microsoft Word 10.1
MD5: 6d1581e71478bcbe7f64bf0045ddacdc SHA-1: c581c6ef2d8e56efcb64752a3a92ac2a1a52178c SHA-256: ca243df1bdbd276fea6cd11197560f74817c4ee1df49c4b77a10125e23105978
180 Risk Score

Malware Insights

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

The file is a Microsoft Word document containing VBA macros, specifically a Document_Open macro, which is a strong indicator of malicious intent. The document body presents a seemingly legitimate registration form for field hockey tryouts, likely serving as a lure to encourage users to enable macros. The presence of the Document_Open macro suggests an attempt to automatically execute malicious code upon opening the document. The ClamAV detection further supports the malicious classification.

Heuristics 5

  • 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
  • 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://ns.adobe.com/xap/1.0/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/iX/1.0/
    • http://ns.adobe.com/xap/1.0/mm/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
2f080eba18fce0dce8d41eff8be59e778b2d470996fe59cfb171fa0469e589c3		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2296 bytes
Detection
ClamAV: Doc.Trojan.Thus-10
Obfuscation or payload: unlikely

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