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

Static analysis result for SHA-256 156db699149efcab…

MALICIOUS

Office (OLE) / .DOCX

169.5 KB Created: 2021-01-22 16:11:00 Authoring application: Microsoft Office Word
MD5: b36a7f1d43ae1e5294850648b1065df7 SHA-1: 46dcd3d985873562f47e0c38ef6d8a98512ce786 SHA-256: 156db699149efcab714cb9f97ccef3b2179e9a3c53d20e6e0ad7e318e17ac1bc
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample contains VBA macros, specifically a Document_Open macro that utilizes CreateObject, indicating malicious intent. The ClamAV detection 'Doc.Malware.Emodldr-10033990-0' further supports its malicious nature. The VBA script appears to be obfuscated, but its structure suggests it is designed to execute code, likely downloading a secondary payload.

Heuristics 6

  • ClamAV: Doc.Malware.Emodldr-10033990-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emodldr-10033990-0
  • 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.
  • 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
5ed4257a756cf59fd0bdd4996a568d11e210a8cb1fd2c78a16a7c0bd2a73f2f9		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 16688 bytes

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