Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 8215f350c6c5d2b5…

MALICIOUS

Office (OLE) / .DOCX

162.0 KB Created: 2020-10-16 14:09:00 Authoring application: Microsoft Office Word
MD5: 56b733a1d349f39fe60103d8682681c6 SHA-1: 0920b7f632c8d8855afb60ae4e40b5f95d242176 SHA-256: 8215f350c6c5d2b5f615bcf7260cb9eeb60747b75a9e6a8e4b9c3ef3b70b8cfe
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is identified as malicious by ClamAV with the signature Doc.Malware.Emotet-9778566-0. Static analysis revealed the presence of VBA macros, specifically a Document_Open macro that utilizes CreateObject, indicating an attempt to execute code upon opening the document. The VBA script is heavily obfuscated but its structure and the presence of a Document_Open auto-execution routine strongly suggest it is designed to download and execute a secondary payload, a common Emotet tactic.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9778566-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9778566-0
  • 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
29095f417e940309e4c3b74017a13ff70f85d23507d6b5296a03fa98c635a78b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15315 bytes

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