Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 0543f2a79034d979…

MALICIOUS

Office (OLE) / .DOCX

190.0 KB Created: 2020-10-27 20:26:00 Authoring application: Microsoft Office Word
MD5: dc6c5577a4c26c7ef033252f5d8d5d88 SHA-1: dba988c9c24a7880bf06cc01d214831a997012e6 SHA-256: 0543f2a79034d979e274c82c77ba11ec29704960d1f21ce51dbb3d9982ba832e
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is identified as malicious by ClamAV with the signature 'Doc.Malware.Emotet-9784450-1'. High-severity heuristics indicate the presence of VBA macros, specifically a Document_Open macro that uses CreateObject to execute code. The obfuscated VBA script, when partially deobfuscated, suggests it attempts to construct and execute a PowerShell command, likely to download and run a secondary payload. This aligns with Emotet's typical behavior of using malicious documents to deliver further stages.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9784450-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9784450-1
  • 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
557610d73c449d90b5a2aabccaaf95f7a5897df031246bc03a17cf1b86e2503b
vba-macro oletools.olevba.extract_macros (decoded VBA source) 16372 bytes