Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 33e33d42123328ea…

MALICIOUS

Office (OLE) / .DOCX

198.5 KB Created: 2020-10-21 13:40:00 Authoring application: Microsoft Office Word
MD5: 840f8dff76d19d1453bcc05f220830f0 SHA-1: b62ce87f3413f0e24c8cae9f709b89983b7f33ec SHA-256: 33e33d42123328ea3e0a1826ed952a84ba6a0972e21c71d6f9b607b1d1fef8c5
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.Dropper.EmotetiBlueUpdate1020-9780531-0', indicating it's a known Emotet variant. The presence of a Document_Open VBA macro and CreateObject calls strongly suggests the execution of malicious code upon opening. The obfuscated VBA script likely facilitates the download and execution of a secondary payload, a common Emotet behavior.

Heuristics 6

  • ClamAV: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0
  • 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
95eb3c5d035a5c49033717199bc50764986e3b5ab99bba0bc56e259ec5a3061f		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 23248 bytes

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