Any software that can determine malware running on background? [closed]

"clearly the 'mother' of all task managers: AnVir Task Manager (even the free version beats the competition hands down).

the following features would be of particular interest to you:

Security risk rating for each active
process, service and startup program.
The security risk rating indicates the
likelihood of a program being
potential virus, spyware, malware or
trojan. The rating is based on
behavior, code analysis, and
integrated database.

Get notification when any program
tries to add itself to startup, and
cancel useless or harmful startup
program.

Right click on any suspicious process
or file and check it on virustotal.com
with 30+ antiviruses."

That's called a Virus-Scanner, AntiVir f.e. .

"There's also Ad-Aware.

It will report on malicious processes and registry entries."