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

Static analysis result for SHA-256 0193bd8bcbce9765…

MALICIOUS

Office (OLE) / .DOCX

396.0 KB Created: 2021-03-31 00:01:00 Authoring application: Microsoft Office Word
MD5: d5e974a3386fc99d2932756ca165a451 SHA-1: 02483dd58e0171881d33a6a66b22a8b1052bcea7 SHA-256: 0193bd8bcbce9765dbecb288d46286bdc134261e4bff1f3c1f772d34fe4ec695
230 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1140 Deobfuscate/Decode Files or Information

The sample is a malicious DOCX file containing VBA macros. The 'Document_Open' macro is present and uses 'CreateObject' and 'GetObject' calls, indicating potential malicious activity. The VBA code also contains a function 'Encode' which suggests obfuscation techniques are being used to hide malicious actions, likely involving downloading and executing a second-stage payload. The document body itself is a political statement, likely a lure to distract from the malicious macro.

Heuristics 8

  • 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
  • GetObject call high OLE_VBA_GETOBJ
    GetObject 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.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Environ() call (env variable access) low OLE_VBA_ENVIRON
    Environ() call (env variable access)
  • 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
b12189cd8ccfdd9fcf30d608702d89e6c2f438e51d51f4d30d5676441f6cc45a		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15479 bytes

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