By James Pero For Dailymail.com
Published: 00:44 BST, 12 April 2019 | Updated: 00:51 BST, 12 April 2019
The hackers behind 'the most murderous malware' in the world are back and have infected a key infrastructure facility, security analysts say.
Researchers at the firm FireEye say traces of a dangerous malware called Triton have cropped up for the second time since since 2017, when hackers leveraged it to gain control of critical processes at an oil plant in Saudi Arabia.
In a report, the firm did not reveal exactly where the attack happened, who the target was, or even how much damage, if any, was done, thought it did highlight some of the group's apparent intentions.
A Saudi Arabian oil plant was the subject of an attack from the same hackers in 2017.
A murderous malware called Triton was behind attacks targeting a Saudi Arabian oil refinery in 2017.
Recent reports reveal that the hackers could have cause a deadly gas leak or explosion using the tool.
Security analysts, FireEye, have highlighted Triton's capabilities and linked it to a Russian research lab.
The hacking group has developed other tools which FireEye says has infected another unnamed facility.
It's unclear what damage hackers carried out, if any.
More victims are likely still out there, says the firm.
'The actor gained a foothold on the distributed control system (DCS) but did not leverage that access to learn about plant operations, exfiltrate sensitive information, tamper with the DCS