Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 82e331bd54e99b71…

MALICIOUS

Office (OLE) / .DOCX

220.2 KB Created: 2020-09-18 06:55:00 Authoring application: Microsoft Office Word
MD5: 3939a41486e1a85783ee7c2d0ef4eca8 SHA-1: 7cec835d6b9acd6620733e51bc480218a6829b2d SHA-256: 82e331bd54e99b710c3f3446239c18c0ac59e4b668cfcc1b78c1d4217173f865
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample is identified as malicious by ClamAV with the signature 'Doc.Dropper.EmotetWinMob0920-9636503-0', indicating it is an Emotet dropper. High-severity heuristics confirm the presence of VBA macros, specifically a Document_Open auto-execution macro that uses CreateObject, a common technique for executing malicious code. The VBA script is heavily obfuscated but its structure and the presence of the Emotet signature strongly suggest it functions as a downloader for a secondary payload.

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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