General

  • Target
    21072026_1644_SystemSettings.exe.iso
  • Size 4.7MB
  • Sample260721-t811fa1ajf
  • SHA256 57330a90bd9dfa527a3bd5dd617414cce87017d09e6db32c53ef5a46736862eb
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      SystemSettings.exe
    • Size 95KB
    • SHA256 d3a50d173af5b0fdd44cbfd7bf7c7471a3b8998eb45c9b49aa2f1c98c9d54ca9
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Detects DonutLoader

    • Family: DonutLoader

      DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.

    • Adds Run key to start application

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Suspicious use of SetThreadContext

    • Target
      Uso_Exclusivo_Interno.pdf.lnk
    • Size 1KB
    • SHA256 9b9026cfe84b985450836a2088c62225fc1ab7b266e102a8d495b6338a45c07b
    • MD5 SHA1 SHA512 TLSH
    • Detects DonutLoader

    • Family: DonutLoader

      DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Suspicious use of SetThreadContext

    • Target
      systemsettings.dll
    • Size 104KB
    • SHA256 8e702485ce297ca9a510aca1841d8e8a436c1c03e1564f005bfa3e8869edb5cd
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Detects DonutLoader

    • Family: DonutLoader

      DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v16

Tasks