Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 c15e416586f7d7f4…

MALICIOUS

Office (OLE)

156.5 KB Created: 2020-09-15 17:12:00 Authoring application: Microsoft Office Word
MD5: fd9676b40a3acc4b19439ecd26791127 SHA-1: 704bb95dc9dd626c662862e88c5d1d4aa67829cf SHA-256: c15e416586f7d7f44b987268273ff0bb20d0b3ec396029ab6c39bf83e5f51244
240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1105 Ingress Tool Transfer

The file contains VBA macros, specifically a Document_Open macro, which is a common execution vector for Emotet. The macro uses CreateObject to execute a PowerShell command that downloads and executes a second-stage payload from the URL 'http://schemas.openxmlformats.org/drawingml/2006/main'. This is a typical Emotet delivery mechanism.

Heuristics 7

  • ClamAV: Doc.Malware.Emotet-9762377-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9762377-0
  • 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
2935858df1d0c162d4ca045aee67cb5dd51728380f384e9ebdf2e9a82ed900e7		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 22872 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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