In a statement, Toll said it had shared samples of the relevant variant with the Australian Cyber Security Centre and unnamed cyber security organisations to ensure the wider community was protected.
"As part of the roll-out of business continuity measures in response to the recent cyber-attack, many of our customers are now able to access our services across large parts of the network globally including freight, parcels, warehousing and logistics, and forwarding operations," Toll's statement said.
"Based on a combination of automated and manual processes instituted in place of the affected IT systems, freight volumes are returning to usual levels. We have also increased staffing at our contact centres to assist with customer service."
There is currently no promised time frame for Toll to have all of its systems back working normally.
While Toll has been accused by some customers of failing to keep them posted on developments, one of its largest corporate clients, Woolworths, told the Financial Review it had implemented business continuity plans with Toll, which had been effective in mitigating the impact on its stores or customers.
Despite identifying the type of ransomware, recovering from the attack remains a painstaking and potentially expensive problem for Toll. Its tech team will need to restore systems from backups, and ensure that no traces of the malware remain before they can get back to operating normally.
When freight giant Maersk was hit by ransomware known as NotPetya in 2017, its disruptions lasted for weeks, and was thought to have cost the company more than $200 million.
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