Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 a8dab829058b2200…

MALICIOUS

Office (OLE) / .DOCX

198.1 KB Created: 2020-09-16 07:09:00 Authoring application: Microsoft Office Word
MD5: 5fc1c992d7beb10c05efa751e7ee5ff6 SHA-1: 4d788d62132977bbf83f00b4e6418c8b06bc7d9c SHA-256: a8dab829058b2200575ec6773790780a48c8d38587dcd02bc094c9084cd57eb1
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 OLE_VBA_DOCOPEN, OLE_VBA_CREATEOBJ, and OLE_VBA_PCODE_AUTOEXEC_EXEC strongly indicate malicious VBA macro execution. The presence of a Document_Open macro that uses CreateObject points to an automated execution chain. The ClamAV signature specifically names Emotet, a known banking trojan and downloader. No document body text was available for analysis, but the macro execution is sufficient to infer malicious intent.

Heuristics 7

  • ClamAV: Doc.Malware.Emotet-9762400-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9762400-0
  • 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
7c58c4b09e28ace19eb6117ae115fc2b8ebe509e6804a2a36cc1706dcd36fda5
vba-macro oletools.olevba.extract_macros (decoded VBA source) 25351 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.