Summary
A remote administration tool (RAT) that bypasses the security features of a program, computer or network to give unauthorized access or control to its user.
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
Backdoor:W32/Agent.AMB is a malicious program that allows an attacker to remotely download and execute files on the infected computer. The backdoor may also be used to force the computer to perform Denial of Service (DoS) attacks.
Installation
It drops its main executable in Windows System directory using any of the following filenames:
- serivces.exe
- svchost.exe
Agent.AMB also drops the following file:
- %temp%\rs.bat - A batch file used to delete the executed copy of the backdoor.
It installs itself as a service using any of the following service names:
- Windows Firewall
- wuauserv
Activity
Agent.AMB connects to a remote site and awaits for commands from a remote hacker.
It may also perform DoS attacks on certain websites and download other malware from the Internet.
Some variants of this backdoor may drop copies of its executable file (using random filenames) to the following locations:
- %Program Files%\Common Files\Microsoft Shared\
- %Program Files%\Windows Media Player\
- %Program Files%\Internet Explorer\Connection Wizard\
- %WinDir%\addins\
- %WinDir%\system\
Other variants also drop the configuration file, Autorun.inf, together with the main executable. If the Windows Autorun function is enabled in the system, the Autorun.inf file is used to automatically run the backdoor upon opening a drive or inserting a removable device into the machine.
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