Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 8d0ca0956814c9f0…

MALICIOUS

Office (OLE) / .DOCX

223.7 KB Created: 2020-09-21 04:09:00 Authoring application: Microsoft Office Word
MD5: 454a81685b380ee15662c6a04714db12 SHA-1: 200a1d99707a861ca46b8cc27ca3d0b250ccebe2 SHA-256: 8d0ca0956814c9f00a306a1931ff8018a56a1c57de581adea31861fe2f0f92f9
280 Risk Score

Malware Insights

Emotet · confidence 95%

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

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically the Document_Open auto-execution and CreateObject/GetObject calls, strongly indicate a malicious dropper. The presence of a 'macros.bas' file and the 'Doc.Dropper.EmotetIOS-9402070-0' signature point towards the Emotet family. The Document_Open macro likely executes a second-stage payload.

Heuristics 8

  • ClamAV: Doc.Dropper.EmotetIOS-9402070-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.EmotetIOS-9402070-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • GetObject call high OLE_VBA_GETOBJ
    GetObject 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.
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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
5616715bcc9f37a507701fce0794395b42220e4bc894eb29a7aefa2b3d5ff263		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19230 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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