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

Static analysis result for SHA-256 947bce97211371e7…

MALICIOUS

Office (OLE) / .DOC

195.0 KB Created: 2024-12-08 09:02:00 Authoring application: Microsoft Office Word
MD5: 7ea9da3dd3db6f3fadf04ac76b54434b SHA-1: b30b950191046d999e71aaa54fb2648c6655ce9b SHA-256: 947bce97211371e730a2b8b79c2ec4d154904e8faa7bed2583c5c6c420230170
340 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell T1204.002 Malicious File

The sample contains VBA macros, specifically a Document_Open macro that utilizes WScript.Shell and CreateObject to execute arbitrary code. This indicates an attempt to download and execute a secondary payload. The presence of the 'macros.bas' file further supports this, as it likely contains the malicious script. The high number of critical and high severity heuristic firings related to VBA execution and shell calls reinforces this assessment.

Heuristics 9

  • 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
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
97ba31d8edaf6a89fc1b37b9b54bbc4fc0399cc6c206fc7258a23c7421fcd39a		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 28226 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 2 shell/COM execution token(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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