| Trojan.Acdropper.C removal process |
|
| Author:admin CopyFrom:web Hits: UpdateTime:2008-4-8 15:21:52 |
Begin of the article Trojan.Acdropper.C removal process
1.DownloadGoogle recommend safer browser Web browser, For more safe , Stay Secure on the Web and stay far away virus,Download URL http://www.oral8.net/firefox/firefox.htm
2. Temporarily Disable System Restore (Windows Me/XP).
3. Update the virus definitions. Reboot computer in SafeMode
4. Run a full system scan and clean/delete all Trojan.Acdropper.C infected files and Delete/Modify any values added to the registry.
Navigate to the subkey and delete the valuesas following:
The Trojan may arrive as a zipped email attachment containing the following files:
- [CHINESE CHARACTERS].doc
- Thumbs.jpg
Note: The Thumbs.jpg file is an MDB file with the hidden attribute set.
The Trojan exploits the Microsoft Jet DataBase Engine MDB File Parsing Remote Buffer Overflow Vulnerability (BID 26468) when the [CHINESE CHARACTERS].doc file is opened.
The Trojan creates the following files, which are copies of Backdoor.Trojan:
- %System%\uiops.dll
- %System%\uiops.exe
- %System%\winlogo.dll
It also creates the following files, which are copies of Hacktool.Rootkit:
- %System%\ietest.log
- %System%\drivers\uiops.sys
It also creates the following clean file:
%System%\uiops.dlx
It then registers itself as system service with the following characteristics:
Display Name: Transfer Service
Image Path: %System%\uiops.exe -u
Startup Type: Automatic
The Trojan has rootkit capabilities that enable it to hide its presence.
The Trojan attempts to download potentially malicious files from the following network addresses:
- cdaio.8866.org (port 21)
- cdnc.8866.org (port 80)
It then opens a back door on the compromised computer.Recommendations
Symantec Security Response encourages all users and administrators to adhere to the following basic security "best practices":
- Turn off and remove unneeded services. By default, many operating systems install auxiliary services that are not critical, such as an FTP server, telnet, and a Web server. These services are avenues of attack. If they are removed, blended threats have less avenues of attack and you have fewer services to maintain through patch updates.
- If a blended threat exploits one or more network services, disable, or block access to, those services until a patch is applied.
- Always keep your patch levels up-to-date, especially on computers that host public services and are accessible through the firewall, such as HTTP, FTP, mail, and DNS services (for example, all Windows-based computers should have the current Service Pack installed.). Additionally, please apply any security updates that are mentioned in this writeup, in trusted Security Bulletins, or on vendor Web sites.
- Enforce a password policy. Complex passwords make it difficult to crack password files on compromised computers. This helps to prevent or limit damage when a computer is compromised.
- Configure your email server to block or remove email that contains file attachments that are commonly used to spread viruses, such as .vbs, .bat, .exe, .pif and .scr files.
- Isolate infected computers quickly to prevent further compromising your organization. Perform a forensic analysis and restore the computers using trusted media.
- Train employees not to open attachments unless they are expecting them. Also, do not execute software that is downloaded from the Internet unless it has been scanned for viruses. Simply visiting a compromised Web site can cause infection if certain browser vulnerabilities are not patched.
5. Exit registry editor .
6.delete the IE temp files or you may download ATF temp files cleaner to run a full cleaning.and restart the computer.
8. Now you may remove Trojan.Acdropper.C successfully.
|
| howtoremoveInputer:admin Editor:admin |
| End Of The Article how to remove Trojan.Acdropper.C |
|
Back 个howtoremove:W32.Tvido.B!inf
Next 个howtoremove: W32.Imspread.Gen |
