Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 5bfcada166ef8a86…

MALICIOUS

Office (OLE) / .DOCX

155.1 KB Created: 2020-12-28 15:43:00 Authoring application: Microsoft Office Word
MD5: 2d11d604c34d4ceb40f7790f5953a4ae SHA-1: e52cbf0d41e06d31b74711613c4eaf46c8ada596 SHA-256: 5bfcada166ef8a8695dad23fa27cebb3bba2f4d355eea5591118d028e6272df0
242 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1071.001 Web Protocols

The sample contains VBA macros, specifically a Document_open macro that uses CreateObject to execute obfuscated code. This behavior, combined with the ClamAV detection name 'Doc.Downloader.EmotetRed02224-9938637-0', strongly suggests it acts as a downloader for the Emotet banking trojan. The macro attempts to read from several local file paths, which is unusual and may be part of its obfuscation or payload retrieval mechanism.

Heuristics 7

  • ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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
a004a96685dc375590aeec65acf06fce9e74ef2bbe0aa7a48bc315f9645e3700		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 6009 bytes

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