Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 87ce5435b02629ca…

MALICIOUS

Office (OLE) / .DOCX

150.2 KB Created: 2020-09-29 07:27:00 Authoring application: Microsoft Office Word
MD5: 430ff997c4eb7011f70c3ddc331444ef SHA-1: 414f68da5acb6ce7970dd7dbd0d6f961cb034b12 SHA-256: 87ce5435b02629cac053bee4de777b66bf3cd70c4b456373fac9cdc7b60f3f57
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file is detected as malicious by ClamAV as Doc.Downloader.Emotet-9769096-0. Static analysis reveals the presence of VBA macros, specifically a Document_Open macro that utilizes CreateObject, indicating an auto-execution mechanism. This macro is designed to download and execute a second-stage payload. The presence of the Emotet family signature strongly supports this conclusion.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9769096-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9769096-0
  • 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
7fe684c304685628252d7c0111d3e33f34436ae7810b3dde5f2aa07edc7bb621		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 8166 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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