Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 4fe3a3262ca90cb8…

MALICIOUS

Office (OLE) / .DOCX

128.2 KB Created: 2020-10-14 13:53:00 Authoring application: Microsoft Office Word
MD5: eb9f26014b1c98286ddf95c4f5ac04c0 SHA-1: 8e9a76f2b3125911a2e133d210ef0dcf4bad4c0c SHA-256: 4fe3a3262ca90cb88f1f6c2c052627845a55d8f6f6c6a2cc1015c7d9478bd6bd
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file contains VBA macros, specifically a Document_Open macro that utilizes CreateObject, indicating an attempt to execute code upon opening. ClamAV detection confirms this as 'Doc.Downloader.Emotet-9778040-0'. The presence of a Document_Open macro and the ClamAV signature strongly suggest Emotet, a known downloader family. The macro's likely intent is to download and execute a second-stage payload.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9778040-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9778040-0
  • 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
a085f52da3766ff03b3361ab273cac0c99aef403d2275ac551d698dcc8f8bb33		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 9635 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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