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

Static analysis result for SHA-256 0495430e2cef3435…

MALICIOUS

Office (OLE) / .DOC

158.8 KB Created: 2020-09-22 07:35:00 Authoring application: Microsoft Office Word
MD5: 32374847ae15c18dd06adaca38eb8700 SHA-1: 4b36c22d9c5ea22b13e6aa42a9c6cb5b5814be47 SHA-256: 0495430e2cef343573a79a505b3e553b20cd8d0328d9e3169adb568b4452da2d
242 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for delivering malicious payloads. The high-confidence heuristics for CreateObject and GetObject, along with the p-code auto-execution firing, indicate that the macro is designed to execute arbitrary code. The ClamAV detection further supports the malicious nature of the file. The VBA script is heavily obfuscated, making it difficult to determine the exact payload, but its presence strongly suggests the document is a malicious attachment intended to download and execute a secondary stage.

Heuristics 7

  • ClamAV: Doc.Malware.Ewtz-9765424-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Ewtz-9765424-0
  • 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
  • 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
a112d95a2b3b8361e272604fc368010c1a607c2cd21f88c20a607d79b8ac6136		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 16742 bytes

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