Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 c18c4a8b5fe16fdf…

MALICIOUS

Office (OLE)

139.0 KB Created: 2020-10-15 20:30:00 Authoring application: Microsoft Office Word
MD5: c6952e379a70bf9a443bbfbf72216fd6 SHA-1: 773808ce301bb031a72c5f2c3b0b4b6cb22bcdfd SHA-256: c18c4a8b5fe16fdf880fce5cb6e6d6fde0c9d494ac8edd7ba5c45a27c708ddbf
240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The file contains VBA macros, specifically a Document_Open auto-execution macro, which is a common delivery mechanism for Emotet. The ClamAV detection explicitly names 'Doc.Downloader.Emotet-9778438-0', confirming the family and its downloader functionality. The macro's use of CreateObject suggests it is designed to download and execute a second-stage payload.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9778438-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9778438-0
  • 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.
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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
2effaaf970b5f9de3ee06c41a03bfb4f772066e9848150d426295dbb68f79b6c		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 12763 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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