One man went into the service station on Moorefield Park Drive in West Wodonga just after 9.15pm on Monday, while the other stood guard at the doorway, according to police.
Inside the store, the man was caught on CCTV holding a gun to a female staff member as he demanded cash.
The employee then took the tray out of the cash register and the man removed cash out of it.
He and the other man then walked away from the store.
Police have released the CCTV in the hope someone recognizes them and can provide information on their whereabouts.
One man was perceived to be Caucasian and was dressed in a peaked cap, a black and white hooded jumper, blue jeans and gray runner/boots.
The second man was perceived to be Caucasian and dressed in a dark-coloured ‘Everlast’ cap, a black and red flannelette shirt, blue jeans and blue runners.
Anyone who witnessed the incident, has dashcam footage or any information is urged to contact police.