典型特洛伊木马病毒症状(特洛伊木马和病毒是一回事)

今日明天 2022年05月29日
本文导读目录:

计算机感染了特洛伊木马以后,一般会出现什么症状简答题

如果中了懦虫类病毒,机子会越来越慢;

如果中了网页病毒,基本上常见情况是:

1,不断弹出网页,让你应接不暇,最终使你的内存耗尽而死机;

2,打开IE就弹出网站和广告,让你不胜其烦!

如果中了木马病毒,那你就有下面危险了:

1,密码被盗;

2,资料被盗;

会使系统崩溃,不稳定,经常无故死机或重启,系统缓慢,隐私泄露等等危害.

建议电脑遇到病毒后可使用腾讯电脑管家对电脑进行杀毒,日常使用时也可开启管家实时防护我们的电脑安全

计算机中病毒或木马时,常见的主要症状有哪些?

计算机感染了病毒后的症状很多,其中以下10种最为常见:

(1)计算机系统运行速度明显减慢;

(2)经常无缘无故地死机或重新启动;

(3)丢失文件或文件损坏;

(4)打开某网页后弹出大量对话框;

(5)文件无法正确读取、复制或打开;

(6)以前能正常运行的软件经常发生内存不足的错误,甚至死机;

(7)出现异常对话框,要求用户输入密码;

(8)显示器屏幕出现花屏、奇怪的信息或图像;

(9)浏览器自动链接到一些陌生的网站;

(10)鼠标或键盘不受控制等。

木马(Trojan),也称木马病毒,是指通过特定的程序(木马程序)来控制另一台计算机。木马通常有两个可执行程序:一个是控制端,另一个是被控制端。木马这个名字来源于古希腊传说(荷马史诗中木马计的故事,Trojan一词的特洛伊木马本意是特洛伊的,即代指特洛伊木马,也就是木马计的故事)。“木马”程序是目前比较流行的病毒文件,与一般的病毒不同,它不会自我繁殖,也并不“刻意”地去感染其他文件,它通过将自身伪装吸引用户下载执行,向施种木马者提供打开被种主机的门户,使施种者可以任意毁坏、窃取被种者的文件,甚至远程操控被种主机。木马病毒的产生严重危害着现代网络的安全运行。

电脑中木马病毒了,会有什么后果?

木马程序的危害是巨大的,它使用户的计算机随时暴露于黑客的控制与监视之下,黑客们可以利用木马程序建立的后门轻易窃取用户数据并传输到指定的计算机中,这较之传统的病毒只能破坏用户数据的危害又大了许多。因此,有效地检测与清除木马程序对保障计算机安全有着重要意义。

感染“木马”的典型症状在使用计算机的过程中如果您发现以下现象,则很有可能是感染了“木马”:计算机反应速度明显变慢硬盘在不停地读写键盘、鼠标不受控制一些窗口被无缘无故地关闭莫名其妙地打开新窗口网络传输指示灯一直在闪烁没有运行大的程序而系统却越来越慢系统资源占用很多运行了某个程序没有反映(此类程序一般不大,从十几k到几百k都有)在关闭某个程序时防火墙探测到有邮件发出密码突然被改变,或者他人得知您的密码或私人信息文件无故丢失,数据被无故删改“木马”防范随着互联网的迅速发展,木马的攻击、危害性越来越大。木马程序虽然有着这样那样的破坏和隐蔽手段,但实质上仍是一种计算机程序,必须运行后才能工作,因此会在内存、注册表、系统目录中留下蛛丝马迹,我们可以通过“查”、“杀”将其“缉拿归案”。我们可以安装个人防病毒软件、个人防火墙软件;及时安装系统补丁;对不明来历的电子邮件和插件不予理睬;经常去安全网站,以便能及时了解一些最新的信息。当然用户还可以选用集查杀、监控、管理、升级于一体的专业级木马查杀工具--木马防线,它不仅可以查杀木马及其他恶意程序,还可以用内置的木马防火墙封堵计算机端口,全面保护计算机。

下面简单介绍一下:Trojan(特洛伊木马),Trojan(特洛伊木马)种类繁多、行为特征复杂。

Trojan.Bomb:以此为前缀命名的木马,可删除用户文件或者破坏扇区信息,导致用户文件丢失,系统不能启动等问题。Trojan.psw:以此为前缀命名的木马是盗取用户密码的窃贼,它们可以窃取用户系统密码或者email、icq、oicq等密码,并把密码发送到指定信箱,或者irc频道等等。Trojan. 频道中的后门脚本。Trojan. 频道中的后门脚本。Trojan.Dropper:木马捆绑和伪装工具,可以把木马绑定到其它文件上。Hacktool(黑客工具)许多黑客工具并不破坏被入侵机器本身的数据,但它可以通过机器攻击或者扫描其他用户的机器。以下介绍几种不同的黑客工具。DoS:拒绝服务攻击工具,攻击者可以通过远程控制的方法操纵用户计算机系统攻击其它节点。DDOS:分布式拒绝服务攻击工具,可以从多个节点攻击一个目标,导致目标瘫痪。Flooder:采用洪水包淹没目标IP,导致该节点瘫痪。Backdoor(后门)以Backdoor为前缀命名的Trojan(特洛伊木马)被称为远程控制木马,这是一类比较常见的有害程序,它包括服务器端和客户端。服务端寄生在被入侵的机器上,打开某一个或者多个端口,等待客户端的连接。一些公共场所的机器可能被“种植”后门工具的服务器端,用户也可能从mail、icq、msn、oicq或者mIRC中,收到攻击者传输来的服务端程序。有些后门工具并没有特殊的客户(控制)端,它们其实悄悄在被入侵的机器上开放web、telnet或者ftp服务,从而盗取用户资源。Worm(蠕虫)Worm(蠕虫)是一种通过电子邮件、IRC、mIRC或者其它网络途径,具有自我复制能力的有害程序。I-worm:也被称为网络蠕虫,它通过email或者ftp、web服务进行传播。IRC-worm:通过IRC频道传播的蠕虫。mIRC-worm:通过mIRC频道传播的蠕虫。

特洛伊木马什么症状

特洛伊木马具有的特性

1.包含干正常程序中,当用户执行正常程序时,启动自身,在用户难以察觉的情况下,完成一些危害用户的操作,具有隐蔽性

由于木马所从事的是 "地下工作",因此它必须隐藏起来,它会想尽一切办法不让你发现它。很多人对木马和远程控制软件有点分不清,还是让我们举个例子来说吧。我们进行局域网间通讯的常用软件PCanywhere大家一定不陌生吧?我们都知道它是一款远程控制软件。PCanywhere比在服务器端运行时,客户端与服务器端连接成功后,客户端机上会出现很醒目的提示标志;而木马类的软件的服务器端在运行的时候应用各种手段隐藏自己,不可能出现任何明显的标志。木马开发者早就想到了可能暴露木马踪迹的问题,把它们隐藏起来了。例如大家所熟悉木马修改注册表和而文件以便机器在下一次启动后仍能载入木马程式,它不是自己生成一个启动程序,而是依附在其他程序之中。有些木马把服务器端和正常程序绑定成一个程序的软件,叫做exe-binder绑定程序,可以让人在使用绑定的程序时,木马也入侵了系统。甚至有个别木马程序能把它自身的exe文件和服务端的图片文件绑定,在你看图片的时候,木马便侵人了你的系统。它的隐蔽性主要体现在以下两个方面:

(1)不产生图标

木马虽然在你系统启动时会自动运行,但它不会在 "任务栏"中产生一个图标,这是容易理解的,不然的话,你看到任务栏中出现一个来历不明的图标,你不起疑心才怪呢!

(2)木马程序自动在任务管理器中隐藏,并以"系统服务"的方式欺骗操作系统。

2.具有自动运行性。

木马为了控制服务端。它必须在系统启动时即跟随启动,所以它必须潜人在你的启动配置文件中,如win.ini、system.ini、winstart.bat以及启动组等文件之中。

3.包含具有未公开并且可能产生危险后果的功能的程序。

4.具备自动恢复功能。

现在很多的木马程序中的功能模块巴不再由单一的文件组成,而是具有多重备份,可以相互恢复。当你删除了其中的一个,以为万事大吉又运行了其他程序的时候,谁知它又悄然出现。像幽灵一样,防不胜防。

5.能自动打开特别的端口。

木马程序潜人你的电脑之中的目的主要不是为了破坏你的系统,而是为了获取你的系统中有用的信息,当你上网时能与远端客户进行通讯,这样木马程序就会用服务器客户端的通讯手段把信息告诉黑客们,以便黑客们控制你的机器,或实施进一步的入侵企图。你知道你的电脑有多少个端口?不知道吧?告诉你别吓着:根据TCP/IP协议,每台电脑可以有256乘以256个端口,也即从0到65535号 "门",但我们常用的只有少数几个,木马经常利用我们不大用的这些端口进行连接,大开方便之 "门"。

6、功能的特殊性。

通常的木马功能都是十分特殊的,除了普通的文件操作以外,还有些木马具有搜索cache中的口令、设置口令、扫描目标机器人的IP地址、进行键盘记录、远程注册表的操作以及锁定鼠标等功能。上面所讲的远程控制软件当然不会有这些功能,毕竟远程控制软件是用来控制远程机器,方便自己操作而已,而不是用来黑对方的机器的。

QUOTE:

木马采用的伪装方法

1.修改图标

木马服务端所用的图标也是有讲究的,木马经常故意伪装成了XT.HTML等你可能认为对系统没有多少危害的文件图标,这样很容易诱惑你把它打开。看看,木马是不是很狡猾?

2.捆绑文件

这种伪装手段是将木马捆绑到一个安装程序上,当安装程序运行时,木马在用户毫无察觉的情况下,偷偷地进入了系统。被捆绑的文件一般是可执行文件 (即EXE、COM一类的文件)。

3.出错显示

有一定木马知识的人部知道,如果打开一个文件,没有任何反应,这很可能就是个木马程序。木马的设计者也意识到了这个缺陷,所以已经有木马提供了一个叫做出错显示的功能。当服务端用户打开木马程序时,会弹出一个错误提示框 (这当然是假的),错误内容可自由定义,大多会定制成一些诸如 "文件已破坏,无法打开!"之类的信息,当服务端用户信以为真时,木马却悄悄侵人了系统。

4.自我销毁

这项功能是为了弥补木马的一个缺陷。我们知道,当服务端用户打开含有木马的文件后,木马会将自己拷贝到Windows的系统文件夹中(C;wmdows或C:windowssystem目录下),一般来说,源木马文件和系统文件夹中的木马文件的大小是一样的 (捆绑文件的木马除外),那么,中了木马的朋友只要在近来收到的信件和下载的软件中找到源木马文件,然后根据源木马的大小去系统文件夹找相同大小的文件,判断一下哪个是木马就行了。而木马的自我销毁功能是指安装完木马后,源木马文件自动销毁,这样服务端用户就很难找到木马的来源,在没有查杀木马的工具帮助下。就很难删除木马了。

5.木马更名

木马服务端程序的命名也有很大的学问。如果不做任何修改,就使用原来的名字,谁不知道这是个木马程序呢?所以木马的命名也是千奇百怪,不过大多是改为和系统文件名差不多的名字,如果你对系统文件不够了解,那可就危险了。例如有的木马把名字改为window.exe,如果不告诉你这是木马的话,你敢删除吗?还有的就是更改一些后缀名,比如把dll改为dl等,不仔细看的,你会发现吗?

特洛伊木马的中毒症状

特洛伊木马是一种通过网络传播的病毒,分为客户端和服务端两部分。特洛伊木马服务器端运行后会试图建立网络连接,所以计算机感染特洛伊木马后典型症状就是会有未知程序试图建立网络连接。

计算机感染特洛伊木马后的典型现象是什么?

如果中了懦虫类病毒,机子会越来越慢;

如果中了网页病毒,基本上常见情况是:

1,不断弹出网页,让你应接不暇,最终使你的内存耗尽而死机;

2,打开IE就弹出网站和广告,让你不胜其烦!

如果中了木马病毒,那你就有下面危险了:

1,密码被盗;

2,资料被盗;

会使系统崩溃,不稳定,经常无故死机或重启,系统缓慢,隐私泄露等等危害.

杀毒软件打不开、启动系统缓慢、资料被盗、频繁死机、弹出任意网页、修改hosts文件、修改注册表、修改主页等

电脑中了特洛伊木马有什么现象啊

用360系统急救箱进行查杀修复,它本身就是木马的专杀工具,在安全模式下查杀的话,效果会更好一些!

我来说两句
黑客技术 2年前 (2022-05-29) | 回复
人的IP地址、进行键盘记录、远程注册表的操作以及锁定鼠标等功能。上面所讲的远程控制软件当然不会有这些功能,毕竟远程控制软件是用来控制远程机器,方便自己操作而已,而不是用来黑对方的机器的。QUOTE:木马采用的伪装方法1.修改图标木马服务
黑客技术 2年前 (2022-05-29) | 回复
自我销毁功能是指安装完木马后,源木马文件自动销毁,这样服务端用户就很难找到木马的来源,在没有查杀木马的工具帮助下。就很难删除木马了。5.木马更名木马服务端程序的命名也有很大的学问。如果不做任何修改,就使用原
黑客技术 2年前 (2022-05-29) | 回复
也可开启管家实时防护我们的电脑安全计算机中病毒或木马时,常见的主要症状有哪些?计算机感染了病毒后的症状很多,其中以下10种最为常见:(1)计算机系统运行速度明显减慢;(2)经常无缘无故地死机或重新启动;(3)丢失文件或文件损坏;(4)
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