Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 e8920178a654a05f…

MALICIOUS

Office (OLE) / .DOCX

196.7 KB Created: 2020-09-24 13:34:00 Authoring application: Microsoft Office Word
MD5: 5b22ee418a4ecb363d6b3928ec343a40 SHA-1: 396f974e2a30eed3da567c4693fa384333dfeabc SHA-256: e8920178a654a05f4d58c417ab5df624d778f70deb69ef450e79c6511c72e55b
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The critical ClamAV detection and high-severity heuristics indicate this is a malicious document. Specifically, the presence of VBA macros, including a Document_Open auto-execution macro, and a CreateObject call strongly suggest malicious intent. The macros likely execute a PowerShell command, as indicated by the 'OLE_VBA_PCODE_AUTOEXEC_EXEC' firing. The document body appears to be obfuscated or corrupted, but the presence of VBA macros and the ClamAV signature 'Doc.Downloader.EmotetRed02224-9938637-0' point towards Emotet, a known downloader family.

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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