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

Static analysis result for SHA-256 ba3324366a76daea…

MALICIOUS

Office (OLE) / .DOCX

246.0 KB Created: 2023-11-14 22:52:00 Authoring application: Microsoft Office Word
MD5: 8c25db407a860024f7afdf84badcf4c1 SHA-1: 3bc12c6d7b4a3cc1472317bef2654bfa843f774f SHA-256: ba3324366a76daea76cb9a0d78c5367085091ec5efa75eb41120d66cee286881
340 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The sample contains a malicious VBA macro that utilizes `WScript.Shell` and the `Shell()` function. This indicates the macro is designed to execute arbitrary commands on the host system, likely to download and run a secondary payload. The presence of `Document_Open` suggests automatic execution upon opening the document. No specific family could be identified, but the technique is common for initial access and payload delivery.

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
61a743250b9f78c0f0f3e01c1030728587fac7564650452adcb6dbc7b903b7f0		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 25752 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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