Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 63157f8cb97e933c…

MALICIOUS

Office (OLE) / .DOC

132.5 KB Created: 2020-10-14 07:01:00 Authoring application: Microsoft Office Word
MD5: 70a977f45442fb68d91acb9b7669d538 SHA-1: 8578b0d743e3e633c9f3e5ca49f87f5da4b6aefd SHA-256: 63157f8cb97e933c4f108a9ba5f796124e6ea22e03794e1d6d7397c5cf6c96f4
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is a malicious Microsoft Word document containing VBA macros, specifically a Document_Open macro. This macro utilizes CreateObject, a common technique for Emotet, to execute obfuscated code. The ClamAV detection explicitly names Emotet, reinforcing this family attribution. The primary function of the macro appears to be downloading and executing a second-stage payload.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9777996-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9777996-0
  • 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
826434d3a30f8115a2b858063b6ee79ded3d3145d977887f7c2b014f2947746b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 9581 bytes

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