Trojan horse or Trojan are a different kind of virus that designed to give a remote computer full access on infected PC. Trojan virus is typically used by hacker to
Trojan horse or Trojan are a different kind of virus that designed to give a remote computer full access on infected PC. Trojan virus is typically used by hacker to steal private data or use a system as part of botnet to perform automated spamming or to distribute Denial-of-service attacks. These types of viruses can perform many other malicious task including electronic money theft, Installation of software (including third-party malware), downloading and uploading files anonymously, modification or deletion of files, monitor user’s screen, keystroke logging , crashing the computer etc. The general symptoms of such infection vary, usually it hijack your browser, slow down your computer, block task manager, block ctrl+alt+delete action, disallow installing most known security utility etc.
There are typically two ways to remove such infection – removing via software and removing manually. In most cases manual remove isn’t possible as usually all required options found disabled. That’s why we skip manual removal instruction and concentrating on automated removal.
Instructions of Removing a Trojan Virus
Step 1: Trojan horse or Trojan virus depend on internet to provide outside PC control over infected PC, that’s why it’s absolutely necessary to disconnect your PC from internet, WiFi connection and LAN connection where applicable.
Step 2: If you manage to identify the Trojan then research on it over internet using another computer and understand what the purpose of that malicious software. If that Trojan is an immediate threat to your personal data such as bank details, account passwords, credit card details then it’s better to change banking passwords and credit card pin immediately to be safe from any financial lose. You can try McAfee and Symantec anti-virus website to obtain an updated detail of any Trojan.
Step 3: A Windows Update usually fix the backdoor that a Trojan used to enter your computer. Let’s check whether it’s possible to update your Windows OS or not. Log in as an administrator and then click the Windows Start button and type “Windows Update” (without quote) in the search field. Now, click “Windows Update” in the search results, now click “Check for Updates.” If you are allowed to update your OS then go for it. By following the onscreen instructions you can easily upgrade your Windows OS.
Step 4: Now you need an antivirus utility to trash the Trojan horse permanently from your PC. If you already have an anti-virus installed in your PC then activate a boot scan and restart your PC or go for a full scan ( when boot scan isn’t possible). For those who using Avast anti-virus can activate boot scan by selecting ‘Boot-time scan” located under “Scan Computer”, select “All harddisks” option for a full scan. If you don’t already have an antivirus installed then download it. Avast and Microsoft Windows Defender are two very effective anti-virus that surprisingly free too.
Step 5: If you are still allowed to install an anti-virus ( in case if you don’t have one) then run the set up file of your downloaded anti-virus and follow the onscreen guideline for a proper installation. If you are using Avast then go for a boot time scan (see Step 4 for instruction) instead of normal full scan. Windows Defender (Microsoft Security Essential) user select “Full” as a scan option and then click on “Scan now” button. When Windows Defender detect a virus it give you a red “Clean Computer” button that allow you to remove infected files along with viruses. You can click on “Show Details” option to see information related to that detected virus. While you use Avast boot-scan to clean Trojan or any virus, the anti-virus ask your input before delete or skip an infected file.
Step 6: If infected PC don’t allow you to install anti-virus or any other security utility then you can try scanning your hard disk using another PC. You required to understand, how to remove and add a hard disk in a computer to perform this task. After attaching your hard disk to another PC, use installed anti-virus utility to scan the drive. Never open any disk partition, folder or file of infected hard disk in connected PC.
Step 7: If nothing work then you have to destroy all data of infected hard disk by repartitioning and formatting to use it again in a PC. If you don’t willing to do so then you should avoid using this hard disk on a Windows system. You can try Ubuntu OS (which is free) to access data from your hard disk. Ubuntu OS have alternatives of most popular Windows software, so working on your data won’t be hard. You can copy your data where possible too through Ubuntu OS but I wonder how much virus free that will be.
A quick note for you, update your OS, anti-virus and any other installed security utility to stay safe from potential threat and financial lose. Backup your important data to an external hard disk ( those are really cheap this day) regularly. Also, perform a full anti-virus scan weekly. Never download files from unknown sources.
McAfee: Virus Information
Symantec: IT Security Threats
avast! Free Antivirus
Download Windows Defender
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