Investigators have been told a 34-year-old Kyneton woman was about to start the ignition to her car, which was parked on Piper Street, when an unknown female opened the driver's side door and attempted to take the keys.

The victim was dragged from the car and hit to the head. A second female also assaulted her.

The victim screamed, causing the two females to run to a nearby waiting car a man was driving.

MAP: Indicates location of Piper Street, not the scene of the incident.

Police said the victim did not require medical treatment.

The incident occurred about 9.30pm.

Anyone with information is encouraged to call Crime Stoppers on 1800 333 000 or the Kyneton Police Station on 5421 2900.

Have you signed up to the Bendigo Advertiser's daily newsletter and breaking news emails? You can register below and make sure you are up to date with everything that's happening in central Victoria.