W32/Rbot-ADI is a worm and IRC backdoor Trojan for the Windows platform.
W32/Rbot-ADI runs continuously in the background, providing a backdoor server which allows a remote intruder to gain access and control over the computer via IRC channels.
When first run W32/Rbot-ADI copies itself to <System>\winmsn32.exe.
The following registry entries are created to run winmsn32.exe on startup:
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
Windows sq Drivers
winmsn32.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Windows sq Drivers
winmsn32.exe
HKCU\Software\Microsoft\Windows\CurrentVersion\RunServices
Windows sq Drivers
winmsn32.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
Windows sq Drivers
winmsn32.exe
W32/Rbot-ADI sets the following registry entries, disabling the automatic startup of other software:
HKLM\SYSTEM\CurrentControlSet\Services\SharedAccess
Start
4
HKLM\SYSTEM\CurrentControlSet\Services\wuauserv
Start
4
Registry entries are set as follows:
HKCU\SYSTEM\CurrentControlSet\Control\Lsa
Windows sq Drivers
winmsn32.exe
HKLM\SYSTEM\CurrentControlSet\Control\Lsa
Windows sq Drivers
winmsn32.exe
HKCU\Software\Microsoft\OLE
Windows sq Drivers
winmsn32.exe
HKLM\SOFTWARE\Microsoft\Ole
Windows sq Drivers
winmsn32.exe
HKLM\SOFTWARE\Microsoft\Ole
EnableDCOM
N
HKLM\SYSTEM\CurrentControlSet\Control\Lsa
restrictanonymous
1
W32/Rbot-ADI also drops Troj/NtRootK-F as msdirectx.sys.