Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 4c25015ae6e259e4…

MALICIOUS

Office (OLE) / .DOCX

140.2 KB Created: 2020-09-30 06:24:00 Authoring application: Microsoft Office Word
MD5: 12f4f491962ef4eda98cc16f767858e5 SHA-1: ad34b1724f76e2d6bc0fdb24209cb1dc0754bf64 SHA-256: 4c25015ae6e259e42564c6b03066111433ae12f8488364a45ab1e6680d708350
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file was detected as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-9769539-0', indicating a downloader for the Emotet family. Static analysis revealed VBA macros, including a Document_Open auto-execution macro and CreateObject calls, which are commonly used to download and execute second-stage payloads. The obfuscated document body text does not provide direct clues to the lure, but the presence of these techniques strongly suggests a malicious intent to compromise the user's system.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9769539-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9769539-0
  • 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
bf242d2b3eef8a928e95104450a1995792bbbbd70e8fa1b795dc489b41229ac6		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10567 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 28 Chr/ChrW string-construction calls. Carved macro source contains an auto-exec entry point and execution/download terms.

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