Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 436c35e76ee3d66b…

MALICIOUS

Office (OLE) / .DOCX

148.6 KB Created: 2020-09-28 14:26:00 Authoring application: Microsoft Office Word
MD5: 081cf7bb74ac891b5aaab8e49c89ae4b SHA-1: cb8a52fc9f1f4f2c3a667b66c5e1e01103866a06 SHA-256: 436c35e76ee3d66bef904cdaaa9a44ef522b91bce5b4f0e0b982b999d7374797
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

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 in the 'macros.bas' file, combined with the auto-execution of code, suggests the document is designed to download and execute a secondary payload. The ClamAV signature specifically names Emotet, a well-known banking trojan and downloader.

Heuristics 7

  • ClamAV: Doc.Malware.Emotet-9768663-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9768663-0
  • 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
52573b116f951816e527b23fd5cfdfc578caca117ddeb459f950d0953f709442
vba-macro oletools.olevba.extract_macros (decoded VBA source) 6643 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.