Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 4b4b71781e567eaf…

MALICIOUS

Office (OLE) / .DOCX

149.9 KB Created: 2020-09-28 14:26:00 Authoring application: Microsoft Office Word
MD5: da4f6ff723e6c2bf21b70a97a653d2d4 SHA-1: 4d00c7fbf41a8187d63359b54c83dea8537699e1 SHA-256: 4b4b71781e567eafc2bf7454af23462d7f49a2a671ef7450cf456d1cc6c53a9a
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains VBA macros, specifically a Document_Open macro that utilizes CreateObject, a common technique for Emotet. The ClamAV detection explicitly names Emotet. The macro's execution is triggered automatically upon opening the document, indicating a malicious intent to compromise the user's system.

Heuristics 7

  • ClamAV: Doc.Malware.Emotet-9768663-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9768663-0
  • 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
52573b116f951816e527b23fd5cfdfc578caca117ddeb459f950d0953f709442		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 6643 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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