[Expert Removal Thread] Win32:VBCrypt-CSL[Trj]: Is It Related to CryptoDefense?

Win32:VBCrypt-CSL[Trj] Analysis

People are so scared by CryptoDefense ransomware that simply assume subjectively that Win32:VBCrypt-CSL[Trj] is associated with the ransomware. PC users should be widely informed that virus is named based on its functionality. For this one, Win32:VBCrypt-CSL[Trj] mainly attacks 32 bit Windows operating system and takes advantage of the vulnerability within VBScript language to penetrate into a target system. When in, the Trojan manages to dodge automatic removal due to its use of Crypt technology.

Relax that the Crypt technology is not used to encrypt victims’ documents, it is working to encrypt its vicious items so that the auto security defense will not be able to overwrite it or correct it randomly. By doing so, Win32:VBCrypt-CSL[Trj] is capable of sticking to a certain machine and get confidential information for profit generation.

How Do I Get Win32:VBCrypt-CSL[Trj]?

As it takes advantage of the vulnerability within VBScript language to penetrate into a target system, it can be easily inferred that Win32:VBCrypt-CSL[Trj] spreads itself through the World Wide Web. So the below behaviors can result in the Trojan affection:

1. Visit some loosely programmed web site, such as the promotional sites for freeware/shareware/rogueware.
2. Get harassed by some browser malware like hijacker/redirector and pop-up ads.
3. Visit the sites that have been attacked by Win32:VBCrypt-CSL[Trj].
4. Visit sites with prohibited content.

How Dangerous Is Win32:VBCrypt-CSL[Trj]?

Affect build-in processes: as the network Trojan horse attacks vulnerability online, it manages to use the vulnerability to call the build-in processes related to network and affect other processes concerning security defense thereafter.

Open up backdoor: with the affected processes, the seldom used ports will be utilized by Win32:VBCrypt-CSL[Trj] to link to its remote server for more command orders without authority.

Bring in additional infections: With the randomly modified processes, the compromised machine becomes weak in protection and with the invisible backdoor, the infected computer will be readily attacked by other infections. Actually, to get more money for its creator, Win32:VBCrypt-CSL[Trj], the Trojan horse will help bring in additional virus, Trojan horse particularly when it is recording stored information in temp files and uploading it to its remote server. Reselling such information will help earn profitable income.

To avoid additional infection and protect your information, it is no hesitation to remove Win32:VBCrypt-CSL[Trj]. Below is the removal thread offered by experts. You are welcome to follow up. Should you run into some unexpected issues or cannot find the corresponding files/directory due to different OS, you are welcome to get professional help from Global PC Support Center here.

Removal Thread Provided by Experts to Remove Win32:VBCrypt-CSL[Trj]

A - Please log off / disconnect the Internet.




B – end the processes related to Win32:VBCrypt-CSL[Trj].

Access Task Manager > View >　select columns > tick "PID" and "Path name" > go to open up System Information > end the process with path name directing to  Win32:VBCrypt-CSL[Trj]'s path or the path that doesn't belong to system.




C – Remove temp files generated by Win32:VBCrypt-CSL[Trj]

1. Press Win key and R key together, you’ll get a pop-up Run box.
2. Type “%Temp%” in the box and hit Enter key, you’ll be led to all temp files.
3. Remove the ones that are not loaded by system.
4. When done, return to the previous menu to click open “Temporary Internet Files”.
5. Locate the folder ”Content.[the browser you are using]+[the version you are using] ”, for example, content.ie5.
6. Remove all the files there (except index.dat).

D – Rectify winSo.dll file.

1. Navigate to C:\Windows\System32 and look for winSo.dll file.
2. Remove it and then create a new text file to name it as “winSo.dll”.
3. Right click on it to select its properties and change it to “read only”.

E – show hidden files and folders to remove the ones generated by Win32:VBCrypt-CSL[Trj].

Windows 7/XP/Vista- Control Panel > user accounts and family safety > Folder Options > View tab > tick ‘Show hidden files and folders’ > non-tick ‘Hide protected operating system files (Recommended)’ > OK button.

Windows 8 - Windows Explorer > View tab > tick ‘File name extensions’ and ‘Hidden items’ > OK button.

• Access the detected path and remove all the items there.
• Access the following folders to remove the items generated on the day when  Win32:VBCrypt-CSL[Trj] was firstly detected:

C:\Windows
C:\Windows\System32
C:\windows\winstart.bat
C:\windows\wininit.ini
C:\windows\Autoexec.bat
C:\Users\[your username]\Documents\
C:\users\user\appdata\local\
C:\Program Files\

Be noted that there’s a big chance for Win32:VBCrypt-CSL[Trj] to load in more virus, without rich virus knowledge and certain level of computer skills, it can be difficult to eradicate the probability of its coming back.  

Reference:
http://blog.vilmatech.com/remove-win32vbcrypt-csltrj-latest-trojan-infection-removal/