Search for (formerly "X Rebirth Tools") and install it.
These containers typically end in extensions like .cat (Catalog) and .dat (Data). The .cat file acts essentially as a table of contents or an index, telling the game engine where specific files are located within the corresponding .dat archive. X Rebirth Catalog Tool 1.10 LINK
X Rebirth released in 2013 and its last major update (4.30) came in 2017. However, the modding community remains active, and is still the go-to tool because: Search for (formerly "X Rebirth Tools") and install it