Troj/PcClien-FP is an IRC backdoor Trojan for the Windows platform.
Troj/PcClien-FP 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/PcClien-FP copies itself to <System>\reg1.exe.
The following registry entries are created to run reg1.exe on startup:
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
System
REG1.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
System
REG1.exe
HKCU\Software\Microsoft\Windows\CurrentVersion\RunServices
System
REG1.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
System
REG1.exe
Registry entries are set as follows:
HKCU\SYSTEM\CurrentControlSet\Control\Lsa
System
REG1.exe
HKLM\SYSTEM\CurrentControlSet\Control\Lsa
System
REG1.exe
HKCU\Software\Microsoft\OLE
System
REG1.exe
HKLM\SOFTWARE\Microsoft\Ole
System
REG1.exe