Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 146e75921fa5eb2e…

MALICIOUS

Office (OLE) / .DOCX

189.5 KB Created: 2020-10-21 08:44:00 Authoring application: Microsoft Office Word
MD5: 8867783b385282662889546f0671b782 SHA-1: 2b787ec501d03b02f130395b7745b4218e697cf5 SHA-256: 146e75921fa5eb2ef11001446c1120af2407e159711d06d62fc6a8b2e0da6386
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file is identified as malicious by ClamAV with the signature 'Doc.Dropper.EmotetiBlueUpdate1020-9780531-0', indicating a known dropper. The presence of a 'Document_Open' VBA macro, along with 'CreateObject' calls and p-code execution, strongly suggests that the macro is designed to run obfuscated code. This code likely downloads and executes a secondary payload, a common tactic for Emotet. The VBA macro's obfuscated nature and the 'CreateObject' usage point to the use of Visual Basic for execution.

Heuristics 6

  • ClamAV: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0
  • 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
1495f7c7ced0d5d67a50de030db1d404fcece38568f93b06e33d3100a17ee340		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20761 bytes

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