Rudimentary Small Credit Case

Rudimentary Small Credit Case is a standard class 1 lockbox. Upon use, these boxes award credit 129-225.

Source
Rudimentary Small Credit Cases can be obtained through the Crew Skill Slicing. They can be harvested from Coded Safe Boxes on Balmorra (Empire) and Taris (Republic), which requires level 55 Slicing, or from level 10-16 Slicing missions.