Hackers who stole $81 million from Bangladesh Central Bank made their tracks clear after hacking into SWIFT financial platform, a key part of the global financial system. The hackers used a custom-made malware to hide evidence and go undetected by erasing records of illicit transfers with the help of compromised SWIFT system. Brussels-based SWIFT confirmed to Reuters that the company was aware of the nasty malware used to target its client software and that it would roll out a security software update on Monday to fix the issue.
Source: https://thehackernews.com/2016/04/swift-bank-hack.html