Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 fe2c4c0e8452ed6b…

MALICIOUS

Office (OLE) / .DOCX

195.6 KB Created: 2020-09-24 13:34:00 Authoring application: Microsoft Office Word
MD5: 454bf5bbc30552c163e6a123814b0542 SHA-1: 4b74642f73412f066f8e3699dd8a4c0c6e88ca32 SHA-256: fe2c4c0e8452ed6b2c6e644296e472af18a988e142404e89061f6cb8f2420593
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is a malicious DOCX file containing a VBA macro that automatically executes upon opening. The macro utilizes CreateObject to likely download and execute a second-stage payload, as indicated by the ClamAV detection name 'Doc.Downloader.EmotetRed02224-9938637-0'. The obfuscated document body text appears to be a string concatenation intended to form a PowerShell command. The presence of a Document_Open macro and CreateObject calls are strong indicators of downloader functionality.

Heuristics 7

  • ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
  • 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
a837a74c15cb3b2b06d70805c30f06a3d350fde6faccbab7be73edc42a69bb80		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 25402 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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