abstr.exe is installed by Autoupder Trojan (also known as Backdoor.Autoupder Virus). It is used as a distribution mechanism by worms or other malicious programs.
abstr.exe is also related to BrowserToolbar Adware.

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If you find this process (file) on your computer, you should delete it and scan your computer with SpyEraser to ensure your privacy and sytem security.

If you want to know the detail information about the file and manage it relaxedly, we recommend WinTasks 5 Pro for you.