Surila (ab)
(Backdoor.Win32.Surila.ab)

by ?

Written in Microsoft Visual C++, compressed with UPX

Origin: China

more versions


dropped files:
c:\WINDOWS\dodrrr.exe             Size: 1,024 bytes 
c:\WINDOWS\msbpx32.dll            Size: 135,168 bytes 
c:\WINDOWS\mscobpxl.dat           Size: 155,648 bytes 
c:\WINDOWS\mwfirebpx.exe          Size: 155,648 bytes 
c:\WINDOWS\winl0gon.exe           Size: 155,648 bytes 
c:\WINDOWS\system32\trash2E181    Size: 133,120 bytes 
c:\WINDOWS\system32\drivers\etc\hosts

port: 50686, 50689, 14200 TCP


added to registry:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies "DisableRegistryTools"
data: 00, 00, 00, 00 

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run "ms_anti_spywarebxp"
data: C:\WINDOWS\mwfirebpx.exe 

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce "ms_anti_spywarebxp"
data: C:\WINDOWS\mwfirebpx.exe 

HKEY_CURRENT_USER\System\CurrentControlSet\Control\Lsa "WINRUN"
data: winl0gon.exe 

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Ole "WINRUN"
data: winl0gon.exe 

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies "DisableRegistryTools"
data: 00, 00, 00, 00 

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run "ms_anti_spywarebxp"
data: C:\WINDOWS\mwfirebpx.exe 

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce "ms_anti_spywarebxp"
data: C:\WINDOWS\mwfirebpx.exe 

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon "SFCScan"
data: 00, 00, 00, 00 

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Lsa "WINRUN"
data: winl0gon.exe 

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa "WINRUN"
data: winl0gon.exe 



tested on Windows XP
March 17, 2006

MegaSecurity