Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 526cd15ebb75a2c9…

MALICIOUS

Office (OLE) / .DOCX

190.7 KB Created: 2020-10-01 13:24:00 Authoring application: Microsoft Office Word
MD5: 8e5ecbcf5c302edb7c222b2566475f8a SHA-1: 9363776514f581c8fa98cdf6d8aa15468ab769f0 SHA-256: 526cd15ebb75a2c969720137e43ee196453d4ca3af2c45b9da57fa31de578525
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically the Document_Open auto-execution and CreateObject calls, strongly indicate malicious intent. The presence of a VBA macro file named 'macros.bas' further supports this. The primary function appears to be the execution of a downloader, as suggested by the 'Doc.Downloader' classification and the auto-executing macro.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9770099-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9770099-0
  • 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
036fd4509daa7ddddbb4b351244a67d134d9405ade9668761579d4b986a83b62		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10439 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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