Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 843b2da06ecf481c…

MALICIOUS

Office (OLE) / .DOC

157.4 KB Created: 2020-09-23 09:30:00 Authoring application: Microsoft Office Word
MD5: bc130af0cda0a455274291a2ef72d00c SHA-1: 02500653dcc5c29e66c38329db7fd1bb2b402a7a SHA-256: 843b2da06ecf481cd70c1107d6a3ef2e8cf393019f8c6019d1105e0456fc3313
280 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is identified as malicious by ClamAV with the signature Doc.Downloader.Emotet-9765530-0. Static analysis reveals the presence of VBA macros, specifically a Document_Open macro that utilizes CreateObject and GetObject calls. This indicates the document is designed to execute arbitrary code upon opening, a common tactic for Emotet to download and execute further stages of malware. The embedded URL, though benign, is part of the document's structure.

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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