Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 141c534f99424a2e…

MALICIOUS

Office (OLE) / .DOCX

159.4 KB Created: 2020-12-30 06:54:00 Authoring application: Microsoft Office Word
MD5: 839cd22f0d9b857b28a435c7b1ff49a2 SHA-1: fef7df4efb31f5900367ee62f5def54f8117b139 SHA-256: 141c534f99424a2efac71b72e0a91da49abff59666593203611897b32563b055
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059 Command and Scripting Interpreter T1566.001 Spearphishing Attachment

The sample contains VBA macros, specifically a Document_Open macro, which is a common technique for Emotet. The macro utilizes CreateObject to interact with the file system, attempting to create files with specific names and paths like 'K:\ZyGIHDD\WqnIeA.EJsKDoxPG'. This behavior suggests the macro is designed to download and execute a second-stage payload. The ClamAV detection also strongly indicates Emotet.

Heuristics 6

  • 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.
  • 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
fc9b7a9f11f0a4e47faea056f75313ff851165b484950d0cb4c39e2ab0b63bfb		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 6667 bytes

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