Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 115c98911b958fcf…

MALICIOUS

Office (OLE) / .DOCX

170.5 KB Created: 2020-10-27 05:39:00 Authoring application: Microsoft Office Word
MD5: fb4bd5c176be2b0ab1c3659f339ebc6e SHA-1: 65bc3e2cfc4b75dfb60da681c4694120656ac949 SHA-256: 115c98911b958fcf8e3c9300eca7763548205c8fade900f66be4d241ed54c99f
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, specifically a Document_Open macro that utilizes CreateObject, indicating malicious intent. ClamAV detection confirms it as 'Doc.Downloader.Emotet-9784225-0'. The VBA script appears to be obfuscated but its structure and the presence of a downloader heuristic suggest it aims to fetch and execute a secondary payload, consistent with Emotet's typical behavior.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9784225-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9784225-0
  • 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
4ba1afe08d79409e1497ca07456a809cf749d23c9ed8d7cdfc9c80ecc4d07df6		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15890 bytes

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