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Csrss.exe Virus?


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3 replies to this topic

#1 iSayChris

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Posted 13 January 2008 - 10:41 AM

hello, i scanned my computer with hijackthis, and i saw this program
"C:\Program Files\Gs34wxdCn-hplar\csrss.exe". according to http://hijackthis.de/index.php#anl, it says that
"This entry is not running from the System32 folder, so it is probably nasty.
Possibly nasty! According to our database this process runs normally in c:\windows\system32\! Check if you know this process and arrange a viruscheck where required. This process is not running from the System32 folder as it is supposed to be."
i tried to end the program, but it said "This is a critical process. Task mananger cannot end."
i went "C:\Program Files\" tried to find "Gs34wxdCn-hplar\csrss.exe", but it wasnt there. please someone help me delete it.

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#2 quietman7

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Posted 13 January 2008 - 12:31 PM

HijackThis is an advanced enumerator (similar in some respects to a registry editor) that is used to display certain of the Windows registry where the majority of malware reside. Online HijackThis analyzers work in a similar manner but rely on the user's ability to interpret the results and determine what needs to be fixed. However, they often provide misleading and/or questionable results. In my experience, they DO NOT always identify all the malware or all the files properly. They sometimes list legitimate files as bad and bad files as legitimate. They sometimes show entries with no file (file missing) as bad when that is not always the case.

Although these sites are open to the public, the user needs to know what they are doing and how to research the displayed log entries before using the original HijackThis application to fix anything. If you do not have advanced knowledge about computers or training in malware investigation, you should NOT fix anything with these analyzers without consulting a expert as to what to fix. Using this tool incorrectly could adversely impact your system.

You can download and use Process Explorer or System Explorer to investigate all running processes and gather additional information to identify and resolve problems. These tools will show the process CPU usage, a description and its path location. If you right-click on the file in question and select properties, you will see more details about the file. To get a list of processes shown by Process Explorer, go to file and choose Save as... to create a log named Procexp.txt in the same folder where Process Explorer resides.

The Process Explorer window shows two panes by default: the upper pane is always a process list and the bottom pane either shows the list of DLLs loaded into the process selected in the upper pane, or the list of operating system resource handles (files, Registry keys, synchronization objects) the process has open. In the menu at the top select View > Lower Pane View to change between DLLs and Handles.

If you have XP Pro, you can use Tasklist to display a list of active processes.
Go to Start > Run and type: cmd
press Ok
At the command prompt type: tasklist /svc >c:\taskList.txt
press Enter
Then go to Start > Run and type: c:\taskList.txt
press Ok to view the list of processes.

The /SVC switch shows the list of active services in each process.
For help and syntax information, type the following command: tasklist /?
press ENTER or see: Syntax options

You can also use the WMI command-line utility to view and list processes.
Go to Start > Run and type: cmd
press Ok
At the command prompt type:
WMIC /OUTPUT:C:\ProcessList.txt PROCESS get Caption,Commandline,Processid
press Enter.

or you can type:
WMIC /OUTPUT:C:\ProcessList.txt path win32_process get Caption,Processid,Commandline
press Enter.

Then go to Start > Run and type: C:\ProcessList.txt
press Ok to view the details of all the processes.

Anytime you come across a suspicious file which you cannot find any information, the file has a legitimate name but is not located where it is supposed to be, or you want a second opinion, submit it to jotti's virusscan or virustotal.com. In the "File to upload & scan" box, browse to the location of the suspicious file and submit (upload) it for scanning/analysis.
Post back with the results of the file analysis.
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#3 iSayChris

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Posted 13 January 2008 - 01:00 PM

i scanned the file with jotti's scan and virustotal and heres the results:
Now i wonder how to remove it

Jotti's results:
Posted Image

Virustotal results:
Posted Image

Edited by iSayChris, 13 January 2008 - 01:43 PM.


#4 quietman7

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Posted 13 January 2008 - 02:02 PM

Please read the pinned topic titled "Preparation Guide For Use Before Posting A Hijackthis Log". In step #9 there are instructions for downloading HijackThis and creating a log. (This is a self-extracting version which will automatically install the current version of HJT in the proper location.) If using Windows Vista, be sure to Run As Administrator.

When you have done that, post your log in the HijackThis Logs and Malware Removal forum, NOT here, for assistance by the HJT Team Experts. A member of the Team will walk you through, step by step, on how to clean your computer. If you post your log back in this thread, the response from the HJT Team will be delayed because your post will have to be moved. This means it will fall in line behind any others posted that same day.

Also post your jotti and Virustotal results afterwards.

Start a new topic, give it a relevant title and post your log along with a brief description of your problem, a summary of any anti-malware tools you have used and a summary of any steps that you have performed on your own. Please include the top portion of the HijackThis log that lists version information. An expert will analyze your log and reply with instructions advising you what to fix. After doing this, we would appreciate if you post a link to your log back here so we know that your getting help from the HJT Team.

Please be patient. It may take a while to get a response because the HJT Team members are very busy working logs posted before yours. They are volunteers who will help you out as soon as possible. Once you have made your post and are waiting, please DO NOT "bump" your post or make another reply until it has been responded to by a member of the HJT Team. Generally the staff checks the forum for postings that have 0 replies as this makes it easier for them to identify those who have not been helped. If you post another response there will be 1 reply. A team member, looking for a new log to work may assume another HJT Team member is already assisting you and not open the thread to respond.
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