Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 5fec266c4f77db45…

MALICIOUS

Office (OLE) / .DOC

147.2 KB Created: 2020-10-16 06:52:00 Authoring application: Microsoft Office Word
MD5: bbb39487e4a6f07dbe94a5c8335860ac SHA-1: 58cdfaa62b8a14189e4f84fc864e0ac9fd1d9ef0 SHA-256: 5fec266c4f77db45d1753005d33ef3aa511697b0f5938a7f6225e66366e95a5c
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.Trojan.Emotet-9778443-1. Static analysis revealed the presence of VBA macros, specifically a Document_Open macro that utilizes CreateObject, indicating an attempt to execute code. The VBA script is heavily obfuscated but its structure and the presence of macro-related heuristics strongly suggest it's designed to download and execute a secondary payload. The embedded URL, though benign, is a common pattern for initial document content.

Heuristics 6

  • ClamAV: Doc.Trojan.Emotet-9778443-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Emotet-9778443-1
  • 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
54ccb2978dc791799651cc6c51a326cfd57296c98b87fa2adc3d5b7f8b3276d7		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15442 bytes

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