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文件名称：WinNt32.dll
文件大小：33,792 bytes
AV命名：Trojan.DL.Wigon.Gen.6
编写语言：VC++
文件MD5：9B2F70D0C4793164633D006B8145E8EA
病毒类型：后门
1．释放文件：
C:\Windows\System32\drivers\Afm74.sys 14,976 bytes
C:\Windows\System32\WinNt32.dll 10,240 bytes
2．添加启动项：
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\WinNt32] DLLName = "WinNt32.dll" StartShell = "WLEventStartShell" Impersonate = 0x00000000 Asynchronous = 0x00000000 ID = 0x00000016
每次开机注入Winlogon进程
3．修改注册表，保证安全模式也加载驱动：
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\Afm74.sys] (Default) = "Driver" [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Network\Afm74.sys] (Default) = "Driver" [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_AFM74\0000\Control] *NewlyCreated* = 0x00000000 ActiveService = "Afm74" [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_AFM74\0000] Service = "Afm74" Legacy = 0x00000001 ConfigFlags = 0x00000000 Class = "LegacyDriver" ClassGUID = "{8ECC055D-047F-11D1-A537-0000F8753ED1}" DeviceDesc = "Afm74" [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_AFM74] NextInstance = 0x00000001 [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Afm74\Enum] 0 = "Root\LEGACY_AFM74\0000" Count = 0x00000001 NextInstance = 0x00000001 [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Afm74\Security] Security = 01 00 14 80 90 00 00 00 9C 00 00 00 14 00 00 00 30 00 00 00 02 00 1C 00 01 00 00 00 02 80 14 00 FF 01 0F 00 01 01 00 00 00 00 00 01 00 00 00 00 02 00 60 00 04 00 00 00 00 00 14 00 FD 01 02 00 01 01 00 00 00 00 00 05 12 00 00 00 00 00 18 00 FF 01 0F 0 [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Afm74] Type = 0x00000001 Start = 0x00000000 ErrorControl = 0x00000000 ImagePath = "%System%\Drivers\Afm74.sys" Group = "SCSI Class" [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services\Afm74] Type = 0x00000001 Start = 0x00000000 ImagePath = "%System%\Drivers\Afm74.sys" Group = "SCSI Class" [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal\Afm74.sys] (Default) = "Driver" [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\Afm74.sys] (Default) = "Driver" [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_AFM74\0000\Control] *NewlyCreated* = 0x00000000 ActiveService = "Afm74" [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_AFM74\0000] Service = "Afm74" Legacy = 0x00000001 ConfigFlags = 0x00000000 Class = "LegacyDriver" ClassGUID = "{8ECC055D-047F-11D1-A537-0000F8753ED1}" DeviceDesc = "Afm74" [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_AFM74] NextInstance = 0x00000001 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Afm74\Enum] 0 = "Root\LEGACY_AFM74\0000" Count = 0x00000001 NextInstance = 0x00000001 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Afm74\Security] Security = 01 00 14 80 90 00 00 00 9C 00 00 00 14 00 00 00 30 00 00 00 02 00 1C 00 01 00 00 00 02 80 14 00 FF 01 0F 00 01 01 00 00 00 00 00 01 00 00 00 00 02 00 60 00 04 00 00 00 00 00 14 00 FD 01 02 00 01 01 00 00 00 00 00 05 12 00 00 00 00 00 18 00 FF 01 0F 0 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Afm74] Type = 0x00000001 Start = 0x00000000 ErrorControl = 0x00000000 ImagePath = "%System%\Drivers\Afm74.sys" Group = "SCSI Class"
4．连接网络208.66.195.**尝试下载其他木马。
解决方法：
1、删除文件(如遇提示无法删除文件，到down.45it.com下载费尔木马强制删除器工具进行强制删除)：
C:\Windows\System32\drivers\Afm74.sys 14,976 bytes
C:\Windows\System32\WinNt32.dll 10,240 bytes
2、查找删除注册表并删除有关于Afm74的项(开始菜单－运行－输入“regedit”进入注册表依次找到说明选项并按提示操作,详细的项见上文)！ 3、重启计算机，升级杀毒软件，全盘扫描。 |