Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 660badb4dd885c02…

MALICIOUS

Office (OLE) / .DOCX

154.9 KB Created: 2020-10-19 08:55:00 Authoring application: Microsoft Office Word
MD5: 22de1f3c11da519052c0366a86b19ab4 SHA-1: 1181a06b64722224dad10566bb3b055156d616e1 SHA-256: 660badb4dd885c020812eedbe85c80e416ce4828685c6c77ed810f50802555d9
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for Emotet. The ClamAV detection explicitly identifies it as 'Doc.Downloader.Emotet'. The macros likely execute code to download and run a second-stage payload, indicated by the CreateObject heuristic and the presence of the 'macros.bas' file.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9780414-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9780414-0
  • 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
e05e00e5695f255205cdf8f3c815d1b7180582c720372a44ffa69b0bf5e004ae		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15558 bytes

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