Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 8cc271a3c843d86d…

MALICIOUS

Office (OLE) / .DOCX

221.6 KB Created: 2020-09-18 06:55:00 Authoring application: Microsoft Office Word
MD5: 3a0267488304aeb984e53e00bd1acf37 SHA-1: 6be09486f9f37d73be5e6b4cab6a3dc5e37b7958 SHA-256: 8cc271a3c843d86d10e06a206bdb54c29e0879fb671d22d8eacee4b90ce21f38
240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The file is identified as malicious by ClamAV with the signature 'Doc.Dropper.EmotetWinMob0920-9636503-0', strongly suggesting an Emotet family dropper. The presence of a Document_Open macro that uses CreateObject and p-code auto-execution indicates that the VBA code is designed to run automatically when the document is opened. This macro functionality is typical for downloading and executing a second-stage payload.

Heuristics 7

  • 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.
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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