Vietnam's Tien Phong Bank (TPBank) said Sunday it had thwarting a wire fraud attempt late last year. It said a third-party service it used to connect with the SWIFT global money transfers system may have been attacked by hackers.

In an emailed statement, TPBank said the attack involved a suspect transaction worth more than 1 million euros ($1.13 million). It said it has since stopped using the outside vendor on SWIFT's advice. SWIFT declined to comment.

BAE Systems last week said malware was used to target a Vietnamese commercial bank using fraudulent messages on the SWIFT network. The malware operated in a similar way to that used by hackers in the cyber heist of $81 million from the Bangladesh central bank in February.