Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 172f07878ad71103…

MALICIOUS

Office (OLE) / .DOCX

142.5 KB Created: 2020-09-29 09:08:00 Authoring application: Microsoft Office Word
MD5: 71839ed468241e18e9ebe6c0d58d57aa SHA-1: c7a8f5799f5d6e0e9e4af7bfec174d418835d719 SHA-256: 172f07878ad71103b1c9a8be3f3ca39946fafdd803860893408283501eebbea3
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, specifically a "Document_Open" macro that utilizes "CreateObject" to execute code. This behavior, combined with the ClamAV detection name "Doc.Downloader.Emotet-9769137-0", strongly suggests it is a downloader for the Emotet banking trojan. The VBA code is heavily obfuscated, but the presence of auto-execution and object creation points to a payload delivery mechanism.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9769137-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9769137-0
  • 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
2f5b3223d32b6b79c027453efef3c5410c27df5205b9cb2b32dd9a1e0304e007		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 8132 bytes

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