Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 5fc665986d6e0e57…

MALICIOUS

Office (OLE) / .DOCX

174.2 KB Created: 2020-10-30 13:48:00 Authoring application: Microsoft Office Word
MD5: aee7f15f448fdc2aa52618b070917c0d SHA-1: fec4cd8a8fc0f150f047dce5657f55c3f22f83d9 SHA-256: 5fc665986d6e0e5763554e4d9f9db9ccc61b2c20fc408e955d286a458f622f48
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains VBA macros, specifically a Document_Open macro, which is a common technique for Emotet. The macro uses CreateObject and obfuscated code, indicating an attempt to execute arbitrary code. The ClamAV detection explicitly names Emotet, providing strong confidence in the family attribution. The primary function of the macro appears to be the execution of a secondary payload.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9785300-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9785300-0
  • 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
6ef446d7bbe59b96b37194ceef7dfc21ebc83ff1edf01838a31098c50a7e733f
vba-macro oletools.olevba.extract_macros (decoded VBA source) 17445 bytes