Around the time of 1 BBY, the Zann Consortium launched an attack against the planet of Felucia. The motivation behind this offensive was to pilfer a Sith holocron in the possession of Jabba the Hutt. Tyber Zann, along with his second-in-command Urai Fen, gained access to Felucia after bribing officials on Nal Hutta and also the space defense forces around Felucia. They then approached the designated site.
Once they had landed on a suitable area of Felucia's terrain, Tyber Zann dispatched Alpha Squad for reconnaissance. The squad's scouting mission led them directly through several patches of Felucian spore plants, resulting in their demise. Subsequently, Tyber deployed the F9-TZ Transport to transport the remaining forces across the hazardous landscape. He also deployed a Mobile Defense Unit and equipped it with a rocket pod. After navigating past the dangerous flora, the remaining distance had to be covered on foot. During this trek, they engaged and eliminated multiple mercenary groups affiliated with the Hutt Cartel. Realizing that a direct assault would be too difficult due to the strong defenses, Tyber Zann and Urai Fen activated their cloaking devices and bypassed the enemy lines. Urai Fen proceeded to assassinate a Noghri assassin, a Twi'lek commando, and the two Hutts who were guarding the holocron. Tyber Zann then entrusted the artifact to Urai Fen for safekeeping. Urai Fen successfully escaped, but Tyber Zann was taken into custody after killing three stormtroopers before giving himself up.
While Urai Fen made his escape with the holocron, Tyber Zann's capture resulted in his imprisonment on Kessel. However, Urai Fen planned to orchestrate Tyber Zann's rescue, enlisting the help of Han Solo and Chewbacca aboard the Millennium Falcon. Urai successfully freed Zann by instigating a prison riot.