Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 65c4648e28e6f6f8…

MALICIOUS

Office (OLE)

230.8 KB Created: 2019-02-22 18:16:00 Authoring application: Microsoft Office Word
MD5: 2deb4279a24fe19807e8983ea6e08d3a SHA-1: 1011fbc78681e2b276216cb30477e5fea5daed4e SHA-256: 65c4648e28e6f6f8945a67375afccf39779cff0cefd98bf19c5fb3adf83c9d5e
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-6865936-0', strongly suggesting the Emotet family. The presence of an AutoOpen VBA macro, detected by multiple heuristics, indicates that the macro executes automatically upon opening. This macro is designed to download and execute a second-stage payload, a common Emotet distribution technique.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-6865936-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-6865936-0
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • GetObject call high OLE_VBA_GETOBJ
    GetObject 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
39b9db656f585d0f6e73e122a2ce2ed8492e5a9b879b70866a650d2d3a0c76e9		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 53377 bytes

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