Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 9f37f633d32573f3…

MALICIOUS

Office (OLE) / .DOCX

194.4 KB Created: 2020-09-16 06:48:00 Authoring application: Microsoft Office Word
MD5: 50128b406865ace57be7319e81bc68e1 SHA-1: b6ba450ac6195e466dc6266922040ad1b46330f8 SHA-256: 9f37f633d32573f331d84cdd6f9b3dd9d16f19f76eabd14880f309a6cab2ee54
240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1566.001 Spearphishing Attachment

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically the Document_Open auto-execution and CreateObject calls, strongly indicate malicious intent. The presence of a VBA macro named 'macros.bas' and the detection signature 'Doc.Malware.Emotet-9762408-0' are highly indicative of the Emotet family. The primary attack pattern involves leveraging the Document_Open macro to execute arbitrary code, likely for downloading and executing further stages of the malware.

Heuristics 7

  • ClamAV: Doc.Malware.Emotet-9762408-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9762408-0
  • 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
df4fb732414a2f9f369567b5a31d1b266832fcbd15a8b5f56fa79c20074a71e7
vba-macro oletools.olevba.extract_macros (decoded VBA source) 25460 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.