Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 640216a570296bf2…

MALICIOUS

Office (OLE) / .DOC

180.5 KB Created: 2020-10-21 10:22:00 Authoring application: Microsoft Office Word
MD5: dc1cac3d58f07d6746e6d3c708562a90 SHA-1: 6e70c28e8f2cea6528eaa859a512bfcbd6048011 SHA-256: 640216a570296bf2130e64755dc2715b8949af7cf8acb0bc2eb44eaa0d91ba18
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 file contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for malware delivery. Heuristics indicate the use of CreateObject for execution, and ClamAV identifies it as 'Doc.Dropper.EmotetiBlueUpdate1020-9780531-0', strongly suggesting a dropper functionality. The obfuscated VBA script likely facilitates the download and execution of a second-stage payload.

Heuristics 6

  • ClamAV: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0
  • 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
2d652a5f62c7cd7db265ab6f01298582724932c4485a1fde21ad075960ba4c72		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20722 bytes

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