Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 3d267f4be68bb83d…

MALICIOUS

Office (OLE) / .DOCX

192.3 KB Created: 2020-12-21 18:52:00 Authoring application: Microsoft Office Word
MD5: 98194bf32fb3bee2b3c8f947b49e2b36 SHA-1: 1009fee2d310e8e949a732df8fcff5adcbeb713b SHA-256: 3d267f4be68bb83d323c596d5898e68f5759bfbea15c10b1dc227b5be16368f1
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 explicitly identifies the sample as 'Doc.Downloader.Emotet-10024800-0'. Heuristics confirm the presence of VBA macros, specifically a 'Document_Open' auto-exec macro that uses 'CreateObject', indicating it's designed to run code upon opening. The document body, though obfuscated, contains strings that suggest an attempt to mask an error or technical issue. The primary function of the VBA macro is to download and execute a second-stage payload, a hallmark of Emotet's delivery mechanism.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-10024800-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-10024800-0
  • 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
0bee4d2d99a3fe2575ac8a6b9cb2450b8e166b1a60c085dc11e1f71a2f792fe4		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10271 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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