Troj/Zlob-Gen detects members of the Zlob family of Trojan downloaders.
The Troj/Zlob-Gen family of Trojans usually attempt to stealth themselves by injecting themselves into another system process or by registering themselves as a service process.
The typical Troj/Zlob-Gen Trojan may create folders in the <System> folder and store downloaded files in these folders and set the following registry entries to run on user startup:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\explorer\run
HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon