Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 02c01cbb6b7a7572…

MALICIOUS

Office (OLE) / .DOCX

181.5 KB Created: 2020-10-27 15:55:00 Authoring application: Microsoft Office Word
MD5: cff4e81b3fe5a1a300ec05af6b801a84 SHA-1: a6b9a28386dcb85ea148f9448ea9319323837d5b SHA-256: 02c01cbb6b7a75728869e7f91ecb921e05225fa91093cf83377f87b12fc36bc3
202 Risk Score

Malware Insights

Emotet · confidence 95%

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 Emotet. The script attempts to execute a PowerShell command, indicated by the 'CreateObject' call and the presence of VBA p-code auto-execution. This PowerShell command is likely responsible for downloading and executing a second-stage payload. The ClamAV detection explicitly names the family as Emotet.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9784225-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9784225-0
  • 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
041f40187eb07e2256edf903ca2aa818eaff7dc6fcfd4bf44314c9f8902df953		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 16848 bytes

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