Troj/FRuWL-Gen is a Trojan for the Windows platform.
Troj/FRuWL-Gen may modify <SYSTEM>\kernel32.dll to load a malicious DLL into all processes.
Troj/FRuWL-Gen may also writes a copy of itself into the registry at the following locations:
HKLM\SOFTWARE\Licenses\<random_letters_and_numbers>
HKLM\SOFTWARE\<random_letters_and_numbers>\Bakup
Where the <random_letters_and_numbers> value is the same for both entries, and can also be found in the registry entry:
HKLM\SOFTWARE\<random_letters_and_numbers>\SN