Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 5d3017d4878e28f0…

MALICIOUS

Office (OLE)

132.5 KB Created: 2020-10-14 19:03:00 Authoring application: Microsoft Office Word
MD5: 0cb8067dcea5ffd0384654eb37a82ccb SHA-1: a0492ecd7ed71ba9f7ee8bd75199940ba2579551 SHA-256: 5d3017d4878e28f04f39fe176de060a002b3f4752644eeb98f04ee2593d259db
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is identified as malicious by ClamAV with the signature Doc.Downloader.Emotet-9778091-0, indicating it's a downloader. Heuristics confirm the presence of VBA macros, specifically a Document_Open auto-execution macro that utilizes CreateObject, a common technique for executing malicious code. The VBA script itself is heavily obfuscated but contains functions that appear to be designed to construct and execute commands, likely involving the creation of objects to download and run further stages. This aligns with Emotet's typical behavior of acting as a downloader for other malware.

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

Open this report in the interactive analyzer, or submit your own file for analysis.