Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 11b6648e4a7e97cf…

MALICIOUS

Office (OLE)

133.4 KB Created: 2020-10-14 19:03:00 Authoring application: Microsoft Office Word
MD5: 2ecdb9f07038f4f026496fa874fa7a8d SHA-1: e1a667dec648ec703985f450a5f255baeb6b8efd SHA-256: 11b6648e4a7e97cfc206e8c02ba511f4b6d29d529680f76ef8b29dea329f59fa
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File

The file is identified as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-9778091-0', indicating a downloader functionality. The presence of a Document_Open macro and CreateObject calls within the VBA code strongly suggests an attempt to execute arbitrary code. The obfuscated VBA script, while difficult to fully deobfuscate, likely aims to download and execute a secondary payload, a common tactic for Emotet. The embedded URL, though benign, is noted as part of the document's structure.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9778091-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9778091-0
  • 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
35ba581a7d07c242723817cd679240b29046cc2a7f4485862374591738596dda		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 9454 bytes

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