Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 61c49b3e25e2d457…

MALICIOUS

Office (OLE)

133.6 KB Created: 2020-10-14 22:36:00 Authoring application: Microsoft Office Word
MD5: f771f8f40e75a20dfec6ec41778b8086 SHA-1: f2b2915dc7ee1a7afd7a61f2fa58f9628793bbb7 SHA-256: 61c49b3e25e2d4573c194040b4d3ca6f56c20b12900ccab72996efc9038537f8
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The file contains VBA macros, specifically a Document_Open macro, which is a common technique for Emotet. The macro uses CreateObject to likely download and execute a second-stage payload. ClamAV also detected this as Doc.Malware.Emotet-9777973-1, further supporting the Emotet family attribution.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9777973-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9777973-1
  • 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
bca0b0caf9e63fc60ac8f336cf8b71a420417b0c34ed838f53f94622a77654b2		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 9526 bytes

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