Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 7dd889503423fb8b…

MALICIOUS

Office (OLE) / .DOCX

176.8 KB Created: 2020-10-16 10:38:00 Authoring application: Microsoft Office Word
MD5: 1d507909de58722838c433c117cd6deb SHA-1: 6c6a5faeee60eb3e0a6e1de5ea6ada154e5936c8 SHA-256: 7dd889503423fb8b05978a0569b457f1660da5f1a5f9200557b39d29009d72ae
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.Trojan.Emotet-9778443-1'. Static analysis revealed the presence of VBA macros, specifically a 'Document_Open' macro that utilizes 'CreateObject', indicating an attempt to execute code. The macro's obfuscated nature and the 'CreateObject' call suggest it is designed to download and execute a secondary payload, a common Emotet behavior. The presence of VBA macros points to the T1059.005 (Visual Basic) technique, and the likely delivery method is T1566.001 (Spearphishing Attachment).

Heuristics 6

  • ClamAV: Doc.Trojan.Emotet-9778443-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Emotet-9778443-1
  • 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
dae34bf6e418fa0d8b9b1311becc27775cd875aa2c1a1dc0c8de66f7f57fbc42		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15342 bytes

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