Trojan-Proxy:W32/Xorpix.AR
Summary
Trojan-Proxy:W32/Xorpix.AR injects its code to the process WINLOGON.EXE. It then opens Internet Explorer and acts as a proxy server.
Removal
Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.
A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:
- Check for the latest database updates
First check if your F-Secure security program is using the latest updates, then try scanning the file again.
- Submit a sample
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.
Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
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If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.
Note: You need administrative rights to change the settings.
Technical Details
Upon execution, the file detected as Trojan-Proxy.Win32.Xorpix.ar will drop DLL files with the following filenames:
- bot.dll
- dn.dll
- partneship.dll
It will then create the following registry entries:
- HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\%dll_name%reg DllName "C:\Documents and Settings\All Users\Documents\Settings\%dll_name%.dll" Startup "%dll_name%reg" Impersonate dword:00000001 Asynchronous dword:00000001
Note: %dll_name% represents the filename of the dropped DLL.Here are the registry entries:
- HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\partnershipreg DllName "C:\Documents and Settings\All Users\Documents\Settings\partnership.dll" Startup "partnershipreg" Impersonate dword:00000001 Asynchronous dword:00000001
- HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\bnreg DllName "C:\Documents and Settings\All Users\Documents\Settings\bn.dll" Startup "bnreg" Impersonate dword:00000001 Asynchronous dword:00000001
- HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\botreg DllName "C:\Documents and Settings\All Users\Documents\Settings\bot.dll" Startup "botreg" Impersonate dword:00000001
- Asynchronous dword:00000001
Xorpix.AR will then inject its code to the process Winlogon.exe. It then opens an instance of Internet Explorer and uses a random port to act as a proxy server.
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