Malicious Office (OLE) / .DOC — malware analysis report

Static analysis result for SHA-256 c3afd5ce1ca50a38…

MALICIOUS

Office (OLE) / .DOC

1.23 MB Created: 2024-07-25 23:39:00 Authoring application: Microsoft Office Word
MD5: 2c19001d5b81037ac70ef17f887cbec0 SHA-1: b028c83105f021545a1f1d6979d403ef30a90ba3 SHA-256: c3afd5ce1ca50a38438bb5026cca27bfbf2d8e786e03f323adceb8ad17517eca
220 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell

The file contains VBA macros, specifically a Document_Open macro that is configured to execute a shell command. This indicates a dropper functionality, where the macro is intended to download and execute a subsequent stage. The ClamAV detection 'Doc.Dropper.HexEncodedEXEHeader-9789587-1' further supports this assessment.

Heuristics 6

  • ClamAV: Doc.Dropper.HexEncodedEXEHeader-9789587-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.HexEncodedEXEHeader-9789587-1
  • Reference to ShellExecute API high SC_STR_SHELLEXEC
    Reference to ShellExecute API
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
    URL http://ns.adobe.com/xap/1.0/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/g/img/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#
    • http://ns.adobe.com/xap/1.0/sType/ResourceEvent#
    • http://ns.adobe.com/illustrator/1.0/
    • http://ns.adobe.com/pdf/1.3/
    • http://www.iec.ch
    • http://schemas.openxmlformats.org/drawingml/2006/main
    • http://schemas.openxmlformats.org/officeDocument/2006/
    • http://schemas.openxmlformats.org/officeDocument/2006/bibliography
    • http://schemas.openxmlformats.org/officeDocument/2006/customXml
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
    URL http://ns.adobe.com/xap/1.0/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/g/img/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#
    • http://ns.adobe.com/xap/1.0/sType/ResourceEvent#
    • http://ns.adobe.com/illustrator/1.0/
    • http://ns.adobe.com/pdf/1.3/
    • http://www.iec.ch
    • http://schemas.openxmlformats.org/drawingml/2006/main
    • http://schemas.openxmlformats.org/officeDocument/2006/
    • http://schemas.openxmlformats.org/officeDocument/2006/bibliography
    • http://schemas.openxmlformats.org/officeDocument/2006/customXml

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
7921eaa0354587d93d1b6c68aae3103f895cb11fea3b715d9a13db8881c552e5		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2658 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 shell/COM execution token(s).

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