Summary
This type of trojan secretly downloads malicious files from a remote server, then installs and executes the files.
Removal
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.
Technical Details
This trojan is hosted on the website http://www.cad-portal.com/includes/[...].php and executes automatically when the user visits the website. This trojan downloads a another trojan onto the system. The downloaded trojan steals the user's internet banking information and is detected as Trojan-Spy.Banbra.RM.
Execution
Upon execution, the trojan creates the file:
- %temp%\bloloolol86.txt
This text file contains the text 'olha'.The trojan then downloads and execute the binary files:
- %windir%\system32\innit226.exe
- %windir%\system32\msnmsgsr.exe
To distract the user from detecting any malicious activity, the trojan also download innocuous-looking files from:
- http://www.paeksan.com/technote/001.jpg
- http://www.paeksan.com/technote/002.jpg
The first JPEG file, 001.jpg, will be renamed tomsnmsgsr.exe;the second JPEG file, 002.jpg, will be renamed toinnit226.exe. Both are renamed using Windows command prompt and stored on %windir%\system32. As these files share similar names with the malicious binary files, they help camouflage the trojan's activity.Upon successful execution of the trojan, Internet Explorer will open the page http://www.orkut.com, a social networking site.This trojan was written in Borland Delphi.
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