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

Static analysis result for SHA-256 b823b0606cae3576…

MALICIOUS

Office (OLE) / .DOC

957.5 KB Created: 2001-04-06 08:07:00 Authoring application: Microsoft Office Word
MD5: c9c28887b126e65f42a02be6dce1fc1d SHA-1: f542d87ec6fdce4951f81af43231d8290c28abea SHA-256: b823b0606cae3576e9ec49e3bd9f733dc6939227d95cec412d2026971f9fa625
260 Risk Score

Malware Insights

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

The sample is a Microsoft Word document containing a significant amount of VBA macro code. Heuristics indicate the use of WScript.Shell and the Shell() function, strongly suggesting an attempt to execute arbitrary commands. The presence of 'macros.bas' and the 'OLE_VBA_MACROS' firing further confirm the macro-based nature of the threat. The document body is minimal, providing no direct lure, so the rationale is based on the macro execution capabilities.

Heuristics 7

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • Suspicious extracted artifact high 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.
  • 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
    • http://tycho.usno.navy.mil/sidereal.html

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
173914fbc3afc60e33a91b92899c538fd7437a40857f6b0765ce67f37c219a85		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 44710 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 3 shell/COM execution token(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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