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

Static analysis result for SHA-256 e62a8640510e8a72…

MALICIOUS

Office (OLE) / .DOC

141.5 KB Created: 2024-08-26 07:20:00 Authoring application: Microsoft Office Word
MD5: 1eefd150be33d5969d86f5dd82774291 SHA-1: 383a690269b80ca756e98387d6fcb6f7b9ae6c80 SHA-256: e62a8640510e8a72b5f5b9115b94439df31cfe186970ce831fc2ac200605dcaf
340 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1059.005 Visual Basic T1218.011 Signed Binary Proxy Execution: Rundll32

The sample contains VBA macros that are automatically executed upon opening the document via the Document_Open macro. The macros utilize WScript.Shell to execute commands, indicating a likely downloader or dropper functionality. The presence of the 'macros.bas' artifact further supports the macro-based execution. Confidence is high due to the critical heuristics related to WScript.Shell and auto-execution.

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
203f4c4ae22c3fa01fbe76bc41cfa4d38f2f93062696c59f63c91bd301f1af15		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 12446 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 shell/COM execution token(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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