Win32.Expiro.30
Added to the Dr.Web virus database:
2011-05-12
Virus description added:
2011-12-15
Technical Information
To ensure autorun and distribution:
Creates the following services:
- [<HKLM>\SYSTEM\ControlSet001\Services\COMSysApp] 'Start' = '00000002'
- [<HKLM>\SYSTEM\ControlSet001\Services\ClipSrv] 'Start' = '00000002'
- [<HKLM>\SYSTEM\ControlSet001\Services\CiSvc] 'Start' = '00000002'
Infects the following executable system files:
- <SYSTEM32>\dllhost.exe
- <SYSTEM32>\dmadmin.exe
- <SYSTEM32>\cisvc.exe
- <SYSTEM32>\clipsrv.exe
Malicious functions:
Executes the following:
- <SYSTEM32>\dllhost.exe /Processid:{02D4B3F1-FD88-11D1-960D-00805FC79235}
- <SYSTEM32>\cisvc.exe
Modifies file system :
Creates the following files:
- <SYSTEM32>\dllhost.vir
- <SYSTEM32>\dmadmin.vir
- <SYSTEM32>\cisvc.vir
- <SYSTEM32>\clipsrv.vir
Deletes the following files:
- <SYSTEM32>\dllhost.vir
- <SYSTEM32>\dmadmin.vir
- <SYSTEM32>\cisvc.vir
- <SYSTEM32>\clipsrv.vir
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
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