nssrv.exe - Dangerous
%windir%\nssrv.exe
Jeff's Story:
My PC had gotten a bad rootkit that my ISP antivirus software (powered by McAfee) could not detect, nor could fix.
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Manual removal instructions:
nssrv.exe is used to hide files, processes and registry.
nssrv.exe is a kernel mode rootkit.
Rootkit contacts remote hacker server using HTTP session.
nssrv.exe spreads via open network shares.
Related files:
%SysDir%\rofl.sys
%WinDir%\nssrv.exe
nssrv.exe is created new system drivers:
service name: "Microsoft Name Server"
display name: "Microsoft Name Server"
Adds the value:
HKLM\SYSTEM\CurrentControlSet\Services\Microsoft Name Server\
to the Windows startup registry keys.
rofl.sys is created new system drivers:
service name: " rofl"
display name: " rofl"
Added to registry:
HKLM\SYSTEM\CurrentControlSet\Services\rofl\
Adds the value:
HKLM\SYSTEM\CurrentControlSet\Services\Messenger
Start
4
HKLM\SYSTEM\CurrentControlSet\Services\RemoteRegistry
Start
4
HKLM\SYSTEM\CurrentControlSet\Services\TlntSvr
Start
4
to the Windows startup registry keys.
Added to registry:
HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate
DoNotAllowXPSP2
1
HKLM\SOFTWARE\Microsoft\Ole
EnableDCOM
N
HKLM\SYSTEM\CurrentControlSet\Control\Lsa
restrictanonymous
1
Registry entries are created under:
HKLM\SOFTWARE\Microsoft\Security Center\
HKLM\SOFTWARE\Policies\Microsoft\WindowsFirewall\DomainProfile\
HKLM\SOFTWARE\Policies\Microsoft\WindowsFirewall\StandardProfile\