Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 055e1fe89e4daa15…

MALICIOUS

Office (OLE) / .DOC

166.0 KB
MD5: 3eff3709efa827fc4f9673615c8537f7 SHA-1: d2515f19045e5473b0e3d3a0c48596d279c141a9 SHA-256: 055e1fe89e4daa151fe649949779e67b4b4a4f1cdb9ada40550b6ab0960f71ce
262 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 heavily obfuscated VBA macros, including an auto-executing Document_Open subroutine, which is a common characteristic of Emotet loaders. The heuristics indicate the macro uses CreateObject and Shell execution, likely to download and run a second-stage payload. ClamAV detection further supports the Emotet family attribution.

Heuristics 7

  • Obfuscated auto-exec VBA loader critical OLE_VBA_OBFUSCATED_AUTOEXEC_LOADER
    Auto-exec VBA reconstructs strings with a heavy custom decoder (numeric char-array, repeated hex-string decode, or junk-token Replace removal) and feeds them to a COM-instantiation or execution sink. This obfuscated-loader shape keeps CreateObject/Shell/URL indicators out of the macro source.
  • ClamAV: Doc.Downloader.EmotetRed0121-9822961-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed0121-9822961-0
  • 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
7ca0390109e782c9e8f55c38a4fff76a3a65e73dfc2917176ac58f2fea8cca42		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 13381 bytes

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