Anti-virus software maker McAfee Inc. has set its sights on a new kind of bug: alleged overbilling.

The Santa Clara, Calif., company is embroiled with Wilmer, Cutler, Pickering, Hale and Dorr over $12 million in legal fees incurred in the trial of former McAfee Chief Financial Officer Prabhat Goyal. The company is accusing WilmerHale of fraud, theft, negligence and breach of fiduciary duty.