This type of trojan secretly installs spy programs and/or keylogger programs.
Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.
A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:
Check for the latest database updates
First check if your F-Secure security program is using the latest updates, then try scanning the file again.
Submit a sample
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.
Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
Exclude a file from further scanning
If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.
Note: You need administrative rights to change the settings.
Trojan-Spy:W32/Banker.JAG is delivered to a machine by a dropper program. Once installed and executed, the trojan-spy logs all keystrokes entered into a web form; the stolen information can then be retrieved by the attacker.Banker.JAG primarily targets banking websites and includes a functionality to inject a script into specified webpages. The injected script requests account details from the user; as it is injected into a legitimate banking site webpage, an unsuspecting user may be deceived into giving away their confidential information.The malware also includes functionality to perform various actions (mostly malicious) on the infected machine.
The Banker dropper program drops a DLL component, together with its configuration file, to the %System% folder. It then enables the use of browser extensions and injects the DLL component as a browser helper object (BHO) into the browser process.The DLL component is detected as Trojan-Downloader.Win32.BHO.kif and is capable of creating a LOG file to contain:
While active, the trojan-spy logs all keyboard input used to fill in online forms via the web browser. To enhance its data-stealing activity, the trojan-spy disables the browser's AutoComplete Field setting. If turned on, the AutoComplete automatically fills in fields in web forms without the user needing to type in any further details; the trojan-spy is therefore unable to capture all the information. Disabling the AutoComplete function forces the user to manually type in the details again and allows the trojan-spy to capture all the information.In addition to its main data-stealing functionality, the trojan-spy is also capable of a number of malicious actions affecting the computer system itself. It is capable of carrying out the following commands:
Directions for performing these actions may be transmitted when the malware connects to its command and control server (C&C) to receive any further commands from the attacker:
The trojan-spy also checks the browser's URL access to see if any of the following keywords are present:
If any of these keywords are present, the trojan-spy injects a script into the page to ask for additional information. A sample of the injected script is as follows:
url="citibank" before="name=password>" what="
To prevent fraud enter your credit card information please: Your ATM or Check Card Number: Expiration Date: (e.g. 07.2007) ATM PIN: Your mother's maiden name:
" block="sign-on." check="pin" quan="4" content="d" >