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Thanos Ransomware (.y9sx7x)

  • Distribution Method : Unknown
 
  • MD5 : b4282c7f3fa918a48c6cc2a8d1872764
 
  • Major Detection Name : Ransom.Hakbit (Malwarebytes), Ransom.MSIL.THANOS.SM (Trend Micro)
 
  • Encrypted File Pattern : .y9sx7x
 
  • Malicious File Creation Location :
     - C:\Users\%UserName%\AppData\Local\Temp\RESTORE_FILES_INFO.txt
     - C:\Users\%UserName%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\mystartup.lnk
     - C:\Users\%UserName%\Desktop\RESTORE_FILES_INFO.txt
 
  • Payment Instruction File : RESTORE_FILES_INFO.txt
 
  • Major Characteristics :
     - Offline Encryption
     - Prometheus Ransomware series
     - Allow Windows firewall rules ("netsh" advfirewall firewall set rule group=\"Network Discovery\" new enable=Yes, "netsh" advfirewall firewall set rule group="File and Printer Sharing" new enable=Yes)
     - Disable Raccine ransomware protection ("taskkill" /F /IM RaccineSettings.exe, "reg" delete "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /V "Raccine Tray" /F, "reg" delete HKCU\Software\Raccine /F, "schtasks" /DELETE /TN "Raccine Rules Updater" /F)
     - Block processes execution (dbeng50.exe, dbsnmp.exe, msaccess.exe, mspub.exe, mydesktopservice.exe, thebat.exe etc.)
     - Stop multi services (CAARCUpdateSvc, MSExchangeSRS, MSSQL$SHAREPOINT, SQLAgent$CXDB, VeeamCloudSvc, WRSVC etc.)
     - Disable multi services ("sc.exe" config Dnscache start= auto, "sc.exe" config FDResPub start= auto, "sc.exe" config SQLTELEMETRY start= disabled, "sc.exe" config SQLTELEMETRY$ECWDB2 start= disabled, "sc.exe" config SQLWriter start= disabled, "sc.exe" config SSDPSRV start= auto, "sc.exe" config SstpSvc start= disabled, "sc.exe" config upnphost start= auto)
     - Disable system restore ("powershell.exe" & Get-WmiObject Win32_Shadowcopy | ForEach-Object { $_Delete(); })
     - Empty the trash ("cmd.exe" /c rd /s /q <Drive Letter>\\$Recycle.bin)

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