high
Summary
Summary
Action- More Information
| Affected operating systems | Windows |
|---|---|
| Characteristics |
|
| Included in our products from | August 2007 (4.20) |
| Protection available since | 12 June 2007 19:54:51 (GMT) |
| Detected by | All Sophos products |
Action
- Summary
- Action
- More Information
Please follow the instructions for removing Trojans.
More Information
Troj/Riler-W is a backdoor Trojan for the Windows platform.
Troj/Riler-W 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 Troj/Riler-W copies itself to <System>\xwinupdaterarx.exe.
The following registry entries are created to run xwinupdaterarx.exe on startup:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
xDRam rar procx
xwinupdaterarx.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
xDRam rar procx
xwinupdaterarx.exe
Troj/Riler-W sets the following registry entries, disabling the automatic startup of other software:
HKLM\SYSTEM\CurrentControlSet\Services\wuauserv
Start
4
HKLM\SYSTEM\CurrentControlSet\Services\SharedAccess
Start
4
Note: disabling autostart for the SharedAccess service deactivates the Microsoft Internet Connection Firewall (ICF).
Registry entries are set as follows:
HKCU\Software\Microsoft\OLE
xDRam rar procx
xwinupdaterarx.exe
HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings
MaxConnectionsPer1_0Server
50
HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings
MaxConnectionsPerServer
50
HKLM\SOFTWARE\Microsoft\Ole
EnableRemoteConnect
N
HKLM\SOFTWARE\Microsoft\Ole
EnableDCOM
N
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