Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 1a085300939d5afe…

MALICIOUS

Office (OLE) / .DOCX

182.5 KB Created: 2020-10-27 09:55:00 Authoring application: Microsoft Office Word
MD5: 15b6f2a8a8c3cd9135a0337af371c03e SHA-1: eaaad4a4159f243a3df05ff658749301394902d3 SHA-256: 1a085300939d5afedf7de966fc70593f8abdaefad80639cc2153cb93450e1014
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The critical ClamAV detection and high-severity heuristics for OLE_VBA_MACROS, OLE_VBA_DOCOPEN, OLE_VBA_CREATEOBJ, and OLE_VBA_PCODE_AUTOEXEC_EXEC strongly indicate malicious VBA macro activity. The presence of a Document_Open macro that uses CreateObject is a common pattern for Emotet. The extracted document body, despite being heavily obfuscated, contains patterns consistent with macro execution. The ClamAV signature specifically names Emotet, increasing confidence in the family attribution.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9784225-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9784225-0
  • 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
d266e0e433b4f1ca206b8db182ee793bd3229a389f65ad6b52e9aace0436fd0a
vba-macro oletools.olevba.extract_macros (decoded VBA source) 15938 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.