Emotet — Office (OLE) / .XLSX malware analysis

Static analysis result for SHA-256 e0be43f7908f8b47…

MALICIOUS

Office (OLE) / .XLSX

138.0 KB Created: 2022-02-09 09:48:26 Authoring application: Microsoft Excel
MD5: e30a284281ba4af86894d77ba88b7f7a SHA-1: daad41c1989e5e72d5e3056ce771e4fcf73dea44 SHA-256: e0be43f7908f8b473c65a1df5e712b8649177258b63c4c318f8155eec2542503
240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File T1105 Ingress Tool Transfer

The file is identified as malicious by ClamAV with the signature 'Doc.Downloader.EmotetRed02220-9938909-0'. High-severity heuristics indicate the presence of a Workbook_Open VBA macro that uses CreateObject to execute code. The embedded VBA script contains obfuscated code that attempts to download and execute a second-stage payload from multiple URLs, including 'https://redington.karmart'. It also drops two files, 'c:\programdata\oue4hjld.vbs' and 'c:\programdata\bhnasleil.bat', suggesting a downloader or dropper functionality.

Heuristics 6

  • ClamAV: Doc.Downloader.EmotetRed02220-9938909-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02220-9938909-0
  • Workbook_Open macro high OLE_VBA_WBOPEN
    Workbook_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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
277e5be0b6f2873f701137b3fceababd9addc57797c602348b0740cdeb6659de		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 52433 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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