Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 644ecfbc278ee3f3…

MALICIOUS

Office (OLE)

158.9 KB Created: 2020-09-15 20:00:00 Authoring application: Microsoft Office Word
MD5: 884868c9f96761ba815c7929b7f0d89b SHA-1: 8cac85fdd2f4580207e0b8a2ad602d47a0922fe3 SHA-256: 644ecfbc278ee3f3c34c6c3eac7f5471a5cdf5d4c003a2b323b8f0490c4a1ff7
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, and uses CreateObject, indicating a malicious document. ClamAV detection confirms it as Emotet, a known downloader. The VBA code is heavily obfuscated but appears to be designed to download and execute a second-stage payload.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9761761-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9761761-0
  • 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
417557a48927398ece814174d936d85f4c7aaebf20a71ff2b1c5a4ebd7420248		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 25524 bytes

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