Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 b1d1c08b520e22fc…

MALICIOUS

Office (OLE) / .DOC

158.3 KB Created: 2020-09-23 09:30:00 Authoring application: Microsoft Office Word
MD5: d0ec9a0ce8e5cc034b11fd6337c2a1bd SHA-1: f860e34645f008e5c1683ff62046c899db9d8a8e SHA-256: b1d1c08b520e22fcababa993c5280c6d4ee437f6b8d975b210780fe78530e581
280 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1105 Ingress Tool Transfer

The critical ClamAV detection and high-severity heuristics for VBA macros, including Document_Open auto-execution and CreateObject/GetObject calls, strongly indicate a malicious downloader. The presence of a VBA macro in 'macros.bas' further supports this. The document body's content is highly obfuscated and appears to be a lure, but the primary malicious activity is driven by the VBA code which is designed to download and execute a secondary payload.

Heuristics 8

  • ClamAV: Doc.Downloader.Emotet-9765530-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9765530-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • GetObject call high OLE_VBA_GETOBJ
    GetObject 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
f2279a4d422668b89c293cd032386976cc753a5ff4104c672bc17e53928a662a		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20002 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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