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For remove Trojan.Bankpatch.D virus,please clean/delete all Trojan.Bankpatch.D infected files and Delete/Modify any values Trojan.Bankpatch.D added to the registry as following:
When the Trojan is executed, it copies itself as the following files:
- %System%\pwrcode.dat
- %System%\wincode.dat
- %System%\krncode.dat
Next, it creates the following files:
- %System%\sysk.tmp (Copy of kernel32.dll)
- %System%\sysp.tmp (Copy of powrprof.dll)
- %System%\sysw.tmp (Copy of wininet.dll)
- %System%\osysk.dat (Copy of kernel32.dll)
- %System%\osysp.dat (Copy of powrprof.dll)
- %System%\osysw.dat (Copy of wininet.dll)
The Trojan then injects code into the following files:
- %System%\kernel32.dll
- %System%\powrprof.dll
- %System%\wininet.dll
Note:The modified files are detected as Trojan.Bankpatch.C!inf and may increase in size by 4kb.
It also creates the following files:
- %System%\nsysk.ini (Trojan.Bankpatch.C!inf)
- %System%\nsysp.ini (Trojan.Bankpatch.C!inf)
- %System%\nsysw.ini (Trojan.Bankpatch.C!inf)
The Trojan injects different code in to each infected .dll file.
Next, the Trojan modifies the following Windows APIs for %System%\kernel32.dll:
- CreateFileW
- CreateProcessInternalW
The Trojan modifies the following Windows APIs for %System%\wininet.dll:
- HttpSendrequestA
- HttpSendRequestW
- InternetConnectA
- InternetCrackUrlA
- InternetOpenA
- InternetOpenW
It also modifies the following Windows APIs for %System%\powrprof.dll:
- SetSuspendState
- GetActivePwrScheme
The threat creates the following file, that contains an encrypted version of the Trojan executable:
%System%\ldshyf1.old
Next, it creates the following registry entries in order to save its configuration:
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\prh\"prh" = "[http://]asmmnation.com"
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\"prd" = "[http://]asmmnation.com"
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\"USF" = "06\00SO"
It may also create the following registry subkeys in order to save configuration data:
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\InternetSettings\new
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\tst
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\w8
The Trojan attempts to run the following command in order to uninstall JAVA on the computer:
cmd.exe /c javasw -uninstall
It attempts to restart the computer after a certain period of time in order to become active in memory.
When the the computer restarts, the threat monitors the browser for certain banking-related URLs.
It then gathers the information and sends it to the following remote Web server:
[http://]asmmnation.com
The Trojan then attempts to retrieve and verify the home page of google.com in order to verify network connectivity.
It then sends the following request to the remote server:
http://asmmnation.com/index.php?id=[COUNTRY]_[UID_LETTERS]&check=[CMD]&version=[TROJAN VERSION NUMBER]
The Trojan attempts to steal cookie files that contain the following strings in their file names:
- 2o7
- 53[
- action.mathtag
- adbrite
- advanta
- advertising
- al.netminers
- amagerbanken
- andelskassen
- apmebf
- atdmt
- banken
- bankofamerica
- basisbank
- bridgetrack
- casalemedia
- chase
- citi.
- citibank
- coremetrics
- danskebank
- diba[THREE RANDOM CHARACTERS].txt
- discovercard
- djs
- djs-netbank
- doubleclick
- e-finance
- ebh-bank
- fastclick
- fih[
- fioniabank
- forbank
- froes
- fsb.netminers
- handelsbanken
- himmerland
- hitbox
- homebanking
- huntington
- hvidbjergbank
- ic-live
- ingdirect
- instadia
- interclick
- juniper
- key
- langspar
- lillespar
- liveperson
- lokalbanken
- lokalsparekassen
- lollandsbank
- lpk[THREE RANDOM CHARACTERS].txt
- lsb.netminers
- lsb[THREE RANDOM CHARACTERS].txt
- maxbank
- maxbank
- middelfartsparekasse
- midspar
- midtfjord
- moensbank
- morsbank
- morsoesparekasse
- nationalcity
- nationalcitycardservicesonline
- nationalirishbank
- navyfcu
- nykredit
- pensam
- peoples
- pnc[
- portalbank
- prod.bec
- realmedia
- regions
- revsci
- riba[THREE RANDOM CHARACTERS].txt
- ringkjoebing-bank
- roiservice
- roskildebank
- ru4
- sallingbank
- sbbank
- sparbank
- sparekassen
- sparekassenfaaborg
- sparekassenthy
- sparfar
- sparhobro
- sparhvetbo
- sparkron
- sparlolland
- sparnebel
- sparnord
- sparoj
- sparostjyl
- sparsalling
- sparskals
- statistik-gallup
- totalbanken
- track.adform
- trafficmp
- tribalfusion
- usbank
- vestjyskbank
- vinderupbank
- vorbank
- wachovia
- wamu
- websteronline
- webtrendslive
- wellsfargo
- www.al-bank
- yieldmanager
- zedo
It then stores the gathered cookie files in the following location:
%System%\cock dir
The threat creates the following folder in order to store configuration files from remote server and gathered information from the compromised computer:
%System%\xmldm
It also attempts to log keystrokes and store them in the following location:
%System%\xmldm dir
The Trojan searches for the following browser plugins when Internet Explorer starts:
- JAVA
- e-Safekey
- EBJSecurity_3
It creates the following registry subkeys in order to download more components on to the computer:
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\task\[DIGITS]\GUID
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\task\[DIGITS]\FROM
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\task\[DIGITS]\UPD
It downloads the following files and registers them as Browser Helper Objects (BHO):
- %System%\[RANDOM CHARACTERS].dll
- %System%\[RANDOM CHARACTERS].txt
It may also download the following file, which is an update of the Trojan:
%System%\lodupgd.jpg
The Trojan may decrypt the original %System%\ldshyf1.old file in order to prevent the Trojan from being deleted.
It may then run the file from the following location:
%Temp%RecommendationsSymantec Security Response encourages all users and administrators to adhere to the following basic security "best practices":
- Use a firewall to block all incoming connections from the Internet to services that should not be publicly available. By default, you should deny all incoming connections and only allow services you explicitly want to offer to the outside world.
- 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.
- Ensure that programs and users of the computer use the lowest level of privileges necessary to complete a task. When prompted for a root or UAC password, ensure that the program asking for administration-level access is a legitimate application.
- Disable AutoPlay to prevent the automatic launching of executable files on network and removable drives, and disconnect the drives when not required. If write access is not required, enable read-only mode if the option is available.
- Turn off file sharing if not needed. If file sharing is required, use ACLs and password protection to limit access. Disable anonymous access to shared folders. Grant access only to user accounts with strong passwords to folders that must be shared.
- Turn off and remove unnecessary services. By default, many operating systems install auxiliary services that are not critical. These services are avenues of attack. If they are removed, threats have less avenues of attack.
- If a 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.
- Configure your email server to block or remove email that contains file attachments that are commonly used to spread threats, such as .vbs, .bat, .exe, .pif and .scr files.
- Isolate compromised computers quickly to prevent threats from spreading further. 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.
- If Bluetooth is not required for mobile devices, it should be turned off. If you require its use, ensure that the device's visibility is set to "Hidden" so that it cannot be scanned by other Bluetooth devices. If device pairing must be used, ensure that all devices are set to "Unauthorized", requiring authorization for each connection request. Do not accept applications that are unsigned or sent from unknown sources.
- For further information on the terms used in this document, please refer to the Security Response glossary.
For successful remove Trojan.Bankpatch.D virus,you may also need do as following:
1. Temporarily Disable System Restore .
2. Update the virus definitions. Reboot computer in SafeMode;
3. Delete the IE temp files,some Trojan.Bankpatch.D temp file exisit there.
4.If you failed to remove Trojan.Bankpatch.D,please go to our remove help forum:http://help.antiviruses123.com
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