瑞星卡卡安全论坛

我每次开机用瑞星防火墙扫木马，都会在相同路径发现木马，清除后，下次开机又会发现，这是怎么了？各位帮帮忙。
附日志：
2006-08-22 12:25:43, IEXPLORE.EXE>>C:\Program Files\Internet Explorer\IEXPLORE.EXE ->Backdoor.Gpigeon.ftq
2006-08-21 16:28:33, IEXPLORE.EXE>>C:\Program Files\Internet Explorer\IEXPLORE.EXE ->Backdoor.Gpigeon.ftq
2006-08-21 16:08:44, IEXPLORE.EXE>>C:\Program Files\Internet Explorer\IEXPLORE.EXE ->Backdoor.Gpigeon.ftq
2006-08-21 11:13:39, IEXPLORE.EXE>>C:\Program Files\Internet Explorer\IEXPLORE.EXE ->Backdoor.Gpigeon.ftq
2006-08-20 21:11:33, IEXPLORE.EXE>>C:\Program Files\Internet Explorer\IEXPLORE.EXE ->Backdoor.Gpigeon.ftq
2006-08-20 11:30:52, IEXPLORE.EXE>>C:\Program Files\Internet Explorer\IEXPLORE.EXE ->Backdoor.Gpigeon.ftq
2006-08-19 12:12:16, IEXPLORE.EXE>>C:\Program Files\Internet Explorer\IEXPLORE.EXE ->Backdoor.Gpigeon.ftq
2006-08-18 21:37:40, IEXPLORE.EXE>>C:\Program Files\Internet Explorer\IEXPLORE.EXE ->Backdoor.Gpigeon.ftq