W32/Rbot-XS is a worm with backdoor Trojan functionality.
W32/Rbot-XS is capable of spreading to computers on the local network protected by weak passwords after receiving the appropriate backdoor command.
The worm runs continuously in the background providing backdoor access to the infected computer over IRC channels.
W32/Rbot-XS can add and delete network shares and users on the infected computer.
W32/Rbot-XS is a worm with backdoor Trojan functionality.
W32/Rbot-XS is capable of spreading to computers on the local network protected by weak passwords after receiving the appropriate backdoor command.
W32/Rbot-XS will attempt to spread by exploiting the following vulnerabilities:
DCOM (MS04-012)
LSASS (MS04-011)
Microsoft SQL servers with weak passwords.
When first run, W32/Rbot-XS copies itself to the Windows system folder as TAY0X.EXE and runs this copy of the worm. The copy will then attempt to delete the original file. In order to run each time a user logs in, W32/Rbot-XS will set the following registry entries:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\
aldefr ere service
tay0x.exe
HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices
aldefr ere service
tay0x.exe
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
aldefr ere service
tay0x.exe
The worm runs continuously in the background providing backdoor access to the infected computer over IRC channels.
W32/Rbot-XS will set the following registry entries in order to disable DCOM and close restrictions on IPC$ shares:
HKLM\SOFTWARE\Microsoft\Ole
EnableDCOM
N
HKLM\SYSTEM\CurrentControlSet\Control\Lsa
restrictanonymous
1
W32/Rbot-XS is capable of altering the following registry entry to restrict anonymous enumeration of SAM accounts:
HKLM\SYSTEM\CurrentControlSet\Control\Lsa\restrictanonymousSAM
W32/Rbot-XS can add and delete network shares and users on the infected computer.