Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 1dba1999448c671d…

MALICIOUS

Office (OLE) / .DOC

242.0 KB Created: 2020-09-17 23:22:00 Authoring application: Microsoft Office Word
MD5: f01d6d3b9c98457e3843692915af1efa SHA-1: dd4724db788347778cd9f8a15bb8e67e6e445739 SHA-256: 1dba1999448c671df16e2a851f3333c25852991b9e4e9218fe5f59c4892750b9
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file contains a critical ClamAV detection for 'Doc.Downloader.EmotetRed02226-9938639-0', indicating it is a known Emotet downloader variant. High-severity heuristics confirm the presence of VBA macros, specifically a 'Document_Open' macro that uses 'CreateObject' for execution. This suggests the macro is designed to automatically run upon opening the document, likely to download and execute a secondary payload. The presence of the 'macros.bas' artifact further supports this. The document body is heavily obfuscated and unreadable, providing no direct clues to the lure, but the technical indicators strongly point to a downloader function.

Heuristics 7

  • ClamAV: Doc.Downloader.EmotetRed02226-9938639-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02226-9938639-0
  • 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
bbb069e7ba4108064d6782bf06897cd403c434c793526e3567eb29507661c241		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 21939 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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