Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 2b6a8918ad03297f…

MALICIOUS

Office (OLE) / .DOCX

200.9 KB Created: 2020-12-22 06:39:00 Authoring application: Microsoft Office Word
MD5: 28c301cae1f2f0bca11525504a47e8a1 SHA-1: 3e1d2e8fce4aef50d45ad216f3a2091f9f88048f SHA-256: 2b6a8918ad03297f609cefb93c31fda496ce4d6c5a13473a0715c5ecb7250b8f
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 a malicious downloader. The presence of a VBA macro file named 'macros.bas' further supports this. The embedded document body, though heavily obfuscated, contains strings that suggest an attempt to prompt the user to enable content for malicious purposes. The primary function appears to be downloading and executing a second-stage payload.

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
87b72d633bd79d3d21c1246dbcc11e62ebdefc06e96dee650ec7c8e181386692
vba-macro oletools.olevba.extract_macros (decoded VBA source) 16335 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.