Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 7ab3c379ec8a0426…

MALICIOUS

Office (OLE) / .DOCX

173.8 KB Created: 2020-10-20 19:38:00 Authoring application: Microsoft Office Word
MD5: 55d244a53a76e61a4c31c525239725ff SHA-1: a6279b1a6e30a183672e7c4422e63beb46392109 SHA-256: 7ab3c379ec8a0426d4730ace601e33598646beb25229f3a4a105f530dfcf6f7c
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file contains VBA macros, including a Document_Open macro, which is a common technique for Emotet. The presence of CreateObject calls and p-code execution further indicates malicious intent. The ClamAV detection explicitly names Emotet, increasing confidence in the family attribution. The VBA script is heavily obfuscated but its structure and the heuristic firings suggest it is designed to download and execute a secondary payload.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9781039-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9781039-0
  • 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
cc8c4959929e54bcaa17b9379ada4c4b2b5fe7ea894a71f152f85bce5d465abd
vba-macro oletools.olevba.extract_macros (decoded VBA source) 18782 bytes