Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 bfa26a715bd9a8a6…

MALICIOUS

Office (OLE)

132.8 KB Created: 2020-10-14 19:03:00 Authoring application: Microsoft Office Word
MD5: 7017aec597298ae5985104de86aa9c70 SHA-1: 889d5470063159ef3fa980022f8b1962e057eb68 SHA-256: bfa26a715bd9a8a6890d9037bc8c675e67a0a18e04386dc88dfaf89218ab9d67
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file is identified as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-9778091-0', indicating it belongs to the Emotet family. Static analysis reveals the presence of VBA macros, specifically a 'Document_Open' macro that utilizes 'CreateObject' for execution. This suggests the macro is designed to download and execute a second-stage payload. The obfuscated document body text does not provide further context on the lure.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9778091-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9778091-0
  • 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
35ba581a7d07c242723817cd679240b29046cc2a7f4485862374591738596dda		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 9454 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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