[Pigwax]

my computer has been a lot slower lately... and just now my norton antivirus popped up a high risk message about some virus called- PWSTEAL.Banker.B and says action taken- access to the file was denied... so i click ok, and the msg is still there...infinite times... when it first popped up, a site showed up that said it would do a security test on my hard drive, a few seconds later, my cd slot opened up, and it said i failed the test... the message also said that the object name is - C:\WINDOWS\msstasks.exe ... so i searched for it on my comp, and it won't let me delete it, or even move it... so since this anti virus program obviously sucks... i don't know if anyone can help me out in some way... other than giving a link to a pay program... cause i don't have any money, and i don't want to hear my mom's bitching... this other site also came up, identifying the virus... http://securityresponse.symantec.com....banker.b.html

that doesn't sound good... cause my mom checks her bank info and her few stocks on here...

well... it may be nothing... but it could really suck...

sorry if that first part was a little hard to understand... i've been hitting resin the past hour...

[Boondock]

watching csi now but i'll try and help you later

[Crash]

http://housecall.trendmicro.com is a free virus scanner from another server, try that.

[highgirly420]

PWSTEAL.Banker.B

Category 1
Discovered on: June 17, 2004
Last Updated on: July 29, 2004 04:35:04 PM



PWSteal.Banker.B is a Trojan horse that attempts to steal financial information. It also has a limited backdoor functionality.



Type: Trojan Horse
Infection Length: 10,416 bytes



Systems Affected: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP
Systems Not Affected: DOS, Linux, Macintosh, OS/2, UNIX, Windows 3.x, Windows Server 2003




protection
# Virus Definitions (Intelligent Updater) *


June 18, 2004
# Virus Definitions (LiveUpdate™) **


June 21, 2004

*


Intelligent Updater definitions are released daily, but require manual download and installation.
Click here to download manually.

**


LiveUpdate virus definitions are usually released every Wednesday.
Click here for instructions on using LiveUpdate.

threat assessment

Wild

* Number of infections: 0 - 49
* Number of sites: 0 - 2
* Geographical distribution: Low
* Threat containment: Easy
* Removal: Easy



Threat Metrics
Low Medium Low

Wild:
Low


Damage:
Medium


Distribution:
Low

Damage

* Payload Trigger: n/a
* Payload: n/a
o Large scale e-mailing: n/a
o Deletes files: n/a
o Modifies files: n/a
o Degrades performance: n/a
o Causes system instability: n/a
o Releases confidential info: Attempts to steal information from browser windows with banking-related titles.
o Compromises security settings: n/a

Distribution

* Subject of email: n/a
* Name of attachment: n/a
* Size of attachment: n/a
* Time stamp of attachment: n/a
* Ports: n/a
* Shared drives: n/a
* Target of infection: n/a

technical details

When PWSteal.Banker.B is executed, it performs the following actions:

1. Creates the following files:

%System%\lsd_f3.dll
%System%\iesprt.sys or %System%\timestamp.sys

Note: %System% is a variable. The Trojan locates the System folder and creates the files in that location. By default, this is C:\Windows\System (Windows 95/98/Me), C:\Winnt\System32 (Windows NT/2000), or C:\Windows\System32 (Windows XP).

2. Adds the values:

"Dllname" = "lsd_f3.dll"
"EntryPoint" = "LSD_F3"
"StackSize" = "0"

to the registry key:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Contro l\MPRServices\
TestService

3. Adds the values:

"Dllname" = "lsd_f3.dll"
"Startup" = "LSD_F3"
"Impersonate" = "1"
"Asynchronous" = "1"
"MaxWait" = "1"

to the registry key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsNT\Cu rrentVersion\
Winlogon\Notify\f3dsl

4. Adds the value:

"Impersonate" = "<Random Number><UsernameOfCurrentUser>"

to the registry key:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Contro l

5. Uses the Windows program, mprexe.exe, to activate its DLL file. This requirement may prevent the Trojan from working as intended on Windows NT/2000/XP systems.

6. Attempts to install itself as a service.

7. The Lsd_f3.dll file attempts to scan the title bars of all open Web browser windows for banking or money references. If it finds any references, it will capture all the information from these windows, such as the details entered into documents or Web forms, and uploads it to a remote Web site.

8. Has a limited backdoor functionality, and a remote user can instruct it to download and execute remote files.


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.
* 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.

removal instructions

The following instructions pertain to all current and recent Symantec antivirus products, including the Symantec AntiVirus and Norton AntiVirus product lines.

1. Disable System Restore (Windows Me/XP).
2. Update the virus definitions.
3. Restart the computer in Safe mode or VGA mode.
4. Reverse the changes made to the registry, and then restart the computer.
5. Run a full system scan and delete all the files detected as PWSteal.Banker.B.



For details on each of these steps, read the following instructions.

1. To disable System Restore (Windows Me/XP)
If you are running Windows Me or Windows XP, we recommend that you temporarily turn off System Restore. Windows Me/XP uses this feature, which is enabled by default, to restore the files on your computer in case they become damaged. If a virus, worm, or Trojan infects a computer, System Restore may back up the virus, worm, or Trojan on the computer.

Windows prevents outside programs, including antivirus programs, from modifying System Restore. Therefore, antivirus programs or tools cannot remove threats in the System Restore folder. As a result, System Restore has the potential of restoring an infected file on your computer, even after you have cleaned the infected files from all the other locations.

Also, a virus scan may detect a threat in the System Restore folder even though you have removed the threat.

For instructions on how to turn off System Restore, read your Windows documentation, or one of the following articles:

* "How to disable or enable Windows Me System Restore"
* "How to turn off or turn on Windows XP System Restore"


Note: When you are completely finished with the removal procedure and are satisfied that the threat has been removed, re-enable System Restore by following the instructions in the aforementioned documents.

For additional information, and an alternative to disabling Windows Me System Restore, see the Microsoft Knowledge Base article, "Antivirus Tools Cannot Clean Infected Files in the _Restore Folder," Article ID: Q263455.

2. To update the virus definitions
Symantec Security Response fully tests all the virus definitions for quality assurance before they are posted to our servers. There are two ways to obtain the most recent virus definitions:

* Running LiveUpdate, which is the easiest way to obtain virus definitions: These virus definitions are posted to the LiveUpdate servers once each week (usually on Wednesdays), unless there is a major virus outbreak. To determine whether definitions for this threat are available by LiveUpdate, refer to the Virus Definitions (LiveUpdate).
* Downloading the definitions using the Intelligent Updater: The Intelligent Updater virus definitions are posted on U.S. business days (Monday through Friday). You should download the definitions from the Symantec Security Response Web site and manually install them. To determine whether definitions for this threat are available by the Intelligent Updater, refer to the Virus Definitions (Intelligent Updater).

The Intelligent Updater virus definitions are available: Read "How to update virus definition files using the Intelligent Updater" for detailed instructions.


3. To restart the computer in Safe mode or VGA mode
Shut down the computer and turn off the power. Wait for at least 30 seconds, and then restart the computer in Safe mode or VGA mode.

* For Windows 95, 98, Me, 2000, or XP users, restart the computer in Safe mode. For instructions, read the document, "How to start the computer in Safe Mode."
* For Windows NT 4 users, restart the computer in VGA mode.


4. To reverse the changes made to the registry

Important: Symantec strongly recommends that you back up the registry before making any changes to it. Incorrect changes to the registry can result in permanent data loss or corrupted files. Modify the specified keys only. Read the document, "How to make a backup of the Windows registry," for instructions.

1. Click Start > Run.
2. Type regedit

Then click OK.

3. Navigate to the key:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Contro l\MPRServices\
TestService

4. In the right pane, delete the values:

"Dllname"="lsd_f3.dll"
"EntryPoint"="LSD_F3"
"StackSize"=0"

5. Navigate to the key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\
Winlogon\Notify\f3dsl

6. In the right pane, delete the values:

"DllName"="lsd_f3.dll"
"Startup"="LSD_F3"
"Impersonate"="1"
"Asynchronous"="1"
"MaxWait"="1"

7. Navigate to the key:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Contro l

8. In the right pane, delete the value:

"Impersonate"=""

9. Exit the Registry Editor.

10. Restart the computer in Normal mode. For instructions, read the section on returning to Normal mode in the document, "How to start the computer in Safe Mode."


5. To scan for and delete the infected files

1. Start your Symantec antivirus program and make sure that it is configured to scan all the files.
* For Norton AntiVirus consumer products: Read the document, "How to configure Norton AntiVirus to scan all files."
* For Symantec AntiVirus Enterprise products: Read the document, "How to verify that a Symantec Corporate antivirus product is set to scan all files."
2. Run a full system scan.
3. If any files are detected as infected with PWSteal.Banker.B, click Delete.

[highgirly420]

tells you right in that link you posted how to get rid of it..

[Pigwax]

i can't update anything...

[DiscoJoey]

pull out that hammer

[highgirly420]

is this virus in its own folder,if so you have to delete the complete folder.it wont let you delete the file inside.did you try renaming it,then deleting it?

[elroypornlab]

O.K what the deal is, Symantec the producer of Nortons made a folder and quarantined your virus you can still open Nortons I assume run a scan obviosly your virus deffinitions are up to date enough to recognize the virus so it shoud be able to quarantine it , If it already has not done so but any way run a scan and tell me what it says!

[Raoul Duke]

you got pwned

[Pigwax]

Originally Posted by Raoul Duke

you got pwned

i don't see any poanage... whatever man...

[Pigwax]

i can dl an update, but it costs $30 for me to do that... i was looking for a cheap solution, like one that costs $0... but i guess i can't...

i tried renaming it, didn't help...

the scan probably won't help without the update... so i guess i'll spend...

[Raoul Duke]

Originally Posted by Pigwax

i don't see any poanage... whatever man...

Thats what you think.