The scope of what insurers are covering is also narrowing as costs go up, said an association representative.

The figures published by Allianz represent the latest glimpse into how ransomware attacks are becoming exponentially more expensive.

"A couple folks have struggled with the idea that we're going to pat companies on the back for doing things they should already be doing," said one observer.

The administration expects to make "concrete announcements" about tackling root causes of cyberattacks, a senior official said.

The woes within the industry could mean significant ramifications for policyholders.

It's the third to announce a successful attack since March.