Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 18764f4bd3999e51…

MALICIOUS

Office (OLE) / .DOCX

221.1 KB Created: 2020-09-18 06:55:00 Authoring application: Microsoft Office Word
MD5: 843af0f653082afc4dc8d3bd0c3bc4b6 SHA-1: cfbf9ac36bbccf6d29207b7c88c38ff48605353a SHA-256: 18764f4bd3999e51c2208f2cc84537d78d6537995d6e04aad6a4cce57a38d718
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 auto-execution macro, which is a common technique for Emotet. The ClamAV detection explicitly names 'Doc.Dropper.EmotetWinMob0920-9636503-0', strongly indicating the Emotet family. The macro's intent appears to be downloading and executing a second-stage payload, as suggested by the CreateObject calls and the overall dropper behavior.

Heuristics 6

  • ClamAV: Doc.Dropper.EmotetWinMob0920-9636503-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.EmotetWinMob0920-9636503-0
  • 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
88c8a6d475859011dad3993e76e09a2a592ce706e1bde139ef1cfc941be7102d		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20707 bytes

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