Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 80cdc2e419643b40…

MALICIOUS

Office (OLE)

159.1 KB Created: 2020-09-15 20:00:00 Authoring application: Microsoft Office Word
MD5: 1fb27e62dab0fd3ec4ba62c929dc62d8 SHA-1: 09c771e0f9f478a8ec9e325b062e5cceb3e69d8a SHA-256: 80cdc2e419643b40edbcebccbfdd3fa746a58e7842baf75a01db7ac543163a25
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample was detected as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-9761761-0', strongly indicating the Emotet family. High-severity heuristics confirm the presence of VBA macros, specifically a 'Document_Open' auto-execution macro that uses 'CreateObject'. This suggests the macro is designed to download and execute a second-stage payload. The presence of a large VBA macro source (25524 bytes) further supports this. No specific URLs or other IOCs were extracted beyond the ClamAV signature.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9761761-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9761761-0
  • 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
417557a48927398ece814174d936d85f4c7aaebf20a71ff2b1c5a4ebd7420248		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 25524 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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