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Check out our video library AppCheck defending against newest ransomware, automatic recovery and real-time backup.

  • Distribution Method : Unknown
 
  • MD5 : 2eabdd2d7366131545a55d65fbe00ab6
 
  • Encrypted File Pattern : [sysfrog@protonmail.com]<Original Filename>.<Original Extension>.sysfrog
 
  • Malicious File Creation Location :
     - C:\ProgramData\how_to_decrypt.txt
     - C:\ProgramData\s32.exe
     - C:\ProgramData\s64.exe
     - C:\ProgramData\svchoste.exe
     - C:\Windows\TEMP\sysfrog.exe
     - C:\how_to_decrypt.txt
 
  • Payment Instruction File : how_to_decrypt.txt
 
  • Major Characteristics :
     - Offline Encryption
     - Katyusha Ransomware series
     - Block processes execution (httpd.exe, mysqld.exe, mysqld-nt.exe, oracle.exe, sqlagent.exe, temagent.exe etc.)
     - Stop multi services (NET stop MSSQLSERVER, NET stop MSSQL$SQLEXPRESS)
     - Disable system restore (vssadmin delete shadows /all /quiet, wmic shadowcopy delete, bcdedit /set {default} bootstatuspolicy ignoreallfailures, bcdedit /set {default} recoveryenabled no, wbadmin delete catalog -quiet)
     - Collecting account information using Mimikatz open-source utility (C:\ProgramData\s32.exe or s64.exe)
     - Network propagation function using Double Pulsar Backdoor & EternalBlue SMB vulnerability

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