Saber Enterprises, seemingly a real business led by Renik in the era of the Galactic Civil War, actually served as a cover for a significant portion of the Empire's counterintelligence activities.
Under the direction of Xizor, Guri gave 10,000 credits to a Rebel chief mechanic located on the moon of Kile. The purpose of this payment was to have Wes Janson's R2 droid programmed to target and shoot Luke Skywalker.
The money's path was carefully arranged to give the impression that it ended with Saber Enterprises, thus falsely suggesting that Darth Vader desired Luke's death.