Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 7d812b3579d4c3f9…

MALICIOUS

Office (OLE) / .DOCX

171.0 KB Created: 2020-10-21 13:56:00 Authoring application: Microsoft Office Word
MD5: d0c307a6b005975a6f316bb83d73ecbd SHA-1: d4545aaadd9c29fbd78ea9d7bd130b2f86d96489 SHA-256: 7d812b3579d4c3f9b7d05487763dd9253ce70bebca34b9d46735f76435e3fdd0
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common characteristic of Emotet droppers. The ClamAV detection name 'Doc.Dropper.EmotetUpdate1020-9778523-0' further supports this attribution. The VBA script likely downloads and executes a second-stage payload, as indicated by the CreateObject heuristic and the presence of obfuscated code.

Heuristics 6

  • ClamAV: Doc.Dropper.EmotetUpdate1020-9778523-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.EmotetUpdate1020-9778523-0
  • 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
113d36c64715b3a3694b52821b832bd3a24df7013a1eebeaaceb4571875cbc4c		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 23319 bytes

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