Troj/Agent-GSP is a Trojan for the Windows platform.

When Troj/Agent-GSP is installed the following files are created:

(Temp)\1SBa59t6.exe
(Windows)\Installer\{0ab4eb09-6f4b-4996-b776-b27bd1e9fcdc}\zip.dll

The file zip.dll is registered as a COM object, creating registry entries under:

HKCR\CLSID\{0ab4eb09-6f4b-4996-b776-b27bd1e9fcdc}

The following registry entry is created to run code exported by zip.dll on startup:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad zip {0ab4eb09-6f4b-4996-b776-b27bd1e9fcdc

More information can be found at this Sophos page.