Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 31e6277e5fde4c16…

MALICIOUS

Office (OLE) / .DOC

186.5 KB Created: 2020-09-16 22:59:00 Authoring application: Microsoft Office Word
MD5: 8efb3476d5e03e338c4a585bdd98e0aa SHA-1: f7a05d7821d3eeaa4b9cd000aa956722dd97f034 SHA-256: 31e6277e5fde4c16834851717c01c3e9f46d1a6436a8120beebca48c627809dd
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file is identified as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-9762305-0', strongly indicating the Emotet family. Static analysis reveals the presence of VBA macros, specifically a 'Document_Open' macro that utilizes 'CreateObject'. This combination is characteristic of Emotet's delivery mechanism, which typically involves macros that download and execute further stages of the malware. The heuristic firings confirm the auto-execution of VBA code with execution tokens, pointing to a downloader functionality.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9762305-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9762305-0
  • 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
c74a4e0e1e8046236a4698925940d43110d502cff010754883e948c4e1efb894
vba-macro oletools.olevba.extract_macros (decoded VBA source) 19088 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.