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

Static analysis result for SHA-256 a6141e971f05ed28…

MALICIOUS

Office (OLE) / .DOCX

674.5 KB Created: 2001-04-06 08:07:00 Authoring application: Microsoft Office Word
MD5: 9fe26c2dfb0bbe6eef69597c32337014 SHA-1: c38e03ccaad7ee1b120d4bfe7f6232b1d18dced5 SHA-256: a6141e971f05ed2833bb1de3dcaa2aef67d63ea806205e510bab5987fc449e83
300 Risk Score

Malware Insights

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

The sample is a malicious DOCX file containing VBA macros. Critical heuristics indicate the use of WScript.Shell and Shell() calls within the VBA code, suggesting an attempt to execute arbitrary commands. The VBA p-code auto-execution with CreateObject further supports this, indicating the script likely downloads and executes a second-stage payload. No specific family could be identified.

Heuristics 8

  • 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
  • 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.
  • 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
d0bef3c6df8f075cc6d6f1d3fe8ce1bc816c87da1587522b3e6f64dd97ba528d		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 136613 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 6 shell/COM execution token(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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