Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 1865bac8ba996bdb…

MALICIOUS

Office (OLE)

182.6 KB Created: 2020-09-15 11:33:00 Authoring application: Microsoft Office Word
MD5: 82b4f71e1e3014abd966d9a7b8d3fc25 SHA-1: a9fce9c67801a321523500653d10f567336b7961 SHA-256: 1865bac8ba996bdbb5df3ef4689643c22ae9ef7f21c654450b61f50551e51baf
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059 Command and Scripting Interpreter

The sample contains VBA macros, specifically a Document_Open macro that uses CreateObject, indicating malicious intent. ClamAV detection explicitly names this as 'Doc.Dropper.EmotetWinMob0920-9636503-0', strongly suggesting the Emotet family. The macro's primary function appears to be executing code that likely downloads and runs a secondary payload, a common Emotet behavior.

Heuristics 6

  • ClamAV: Doc.Dropper.EmotetWinMob0920-9636503-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.EmotetWinMob0920-9636503-0
  • 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
1b0a2e6dc108ed4842c981ae863863f03d8f9f4fda298d5feed7a2d71f08ba81		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 22489 bytes

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