Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 9922b76bfdc02401…

MALICIOUS

Office (OLE)

152.2 KB Created: 2020-09-14 20:00:00 Authoring application: Microsoft Office Word
MD5: 2cef4a6caec772e2c4c65a500acaa4eb SHA-1: aa1ffc53ef0dea2a8de0e3223468ee27cc306eca SHA-256: 9922b76bfdc024016dde4bbdb94099ac4a6ed95e4843cad3a7c5e1869dbdaef8
300 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file is identified as malicious by ClamAV with the signature Doc.Malware.Emotet-9762672-0. Critical heuristics indicate an obfuscated PowerShell stager within a hidden UserForm, triggered by a Document_Open macro. This suggests the document's primary purpose is to execute a malicious payload. The VBA p-code auto-execution with CreateObject further supports this, pointing to a macro-based execution chain.

Heuristics 8

  • Hidden UserForm PowerShell EncodedCommand stager critical OLE_USERFORM_OBFUSCATED_POWERSHELL
    OLE document contains a UTF-16LE form/property string with an obfuscated PowerShell -EncodedCommand payload. The observed macro family reconstructs this hidden string with Split/Join or UserForm property reads and launches it through WMI/COM process creation. This is downloader malware, not an Office CVE exploit.
  • ClamAV: Doc.Malware.Emotet-9762672-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9762672-0
  • 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
c7305ccc26d392bb87c692b42d2d6bc38b982a0e4da883514cef9164df30503f		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18576 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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