Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 335f33142f3899f0…

MALICIOUS

Office (OLE) / .DOCX

131.5 KB Created: 2020-09-28 15:20:00 Authoring application: Microsoft Office Word
MD5: 1e8096fccc47a8412983e1880cef99f9 SHA-1: 92addfa8fb6aa45e19fae6b6fab781ed460f8d47 SHA-256: 335f33142f3899f02732b881f2ffc5eedfa1339d88996d72fc63ca89040f4d33
240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059.001 PowerShell

The file contains VBA macros, specifically a Document_Open macro that is configured to execute automatically upon opening. Heuristics indicate the use of CreateObject and p-code auto-execution, common for Emotet malware. The ClamAV detection further supports the Emotet family attribution. The document body content is heavily obfuscated and does not provide clear user-facing text, but the presence of the auto-executing macro strongly suggests a malicious intent, likely to download and execute a second-stage payload.

Heuristics 7

  • ClamAV: Doc.Malware.Emotet-9768661-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9768661-0
  • 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
2ce77a90790088f293710a707301ae69bfebe17386d7804fba58a5e382e47c64
vba-macro oletools.olevba.extract_macros (decoded VBA source) 6657 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.