Asahi Group Holdings’ November beer sales in Japan fell more than the previous month, underscoring the challenges the company faces in recovering froma cyberattack that crippled production and distribution.

Asahi said monthly beer sales were down over 20% in the country from a year earlier, as the company struggled to ship year-end gift products — a sharper decline than the nearly 10% drop seen in October.

Sales of soft drinks and food items showed signs of improvement from the previous month, the Japanese brewer said Wednesday. Soft drinks fell around 25% in November from the year before, recovering from a roughly 40% decline in October. Food products dipped around 10%, better than a more than 20% decrease the previous month.

Asahi aims for its supply chain to be largely restored by February. The September ransomware hit shut down key internal systems managing the company’s order and shipments in Japan. Asahi has since been forced to process transactions manually, slowing operations and leaving room for local competitors to capture market share.

Kirin Holdings said beer sales rose 1% in November from a year earlier, while Sapporo Holdings said sales by volume dropped 12% for the period.

Asahi said in November that it expected its financial results to be delayed by more than 50 days after the end of the fiscal year due to the cyberattack. It plans to announce the figures "promptly” once systems are fully restored, it said Wednesday.

Asahi also disclosed that up to 1.9 million records of private information may have been compromised in the hit, but that no ransom money was paid. The company said additional information leaked following the ransomware attack were on the dark web on Tuesday night, in response to queries.