[Poseidon Group](https://attack.mitre.org/groups/G0033) is a Portuguese-speaking threat group that has been active since at least 2005. The group has a history of using information exfiltrated from victims to blackmail…

[APT37](https://attack.mitre.org/groups/G0067) is a North Korean state-sponsored cyber espionage group that has been active since at least 2012. The group has targeted victims primarily in South Korea, but also…

[Medusa Group](https://attack.mitre.org/groups/G1051) has been active since at least 2021 and was initially operated as a closed ransomware group before evolving into a Ransomware-as-a-Service (RaaS) operation. Some reporting indicates…

[TA551](https://attack.mitre.org/groups/G0127) is a financially-motivated threat group that has been active since at least 2018. (Citation: Secureworks GOLD CABIN) The group has primarily targeted English, German, Italian, and Japanese…

[RedCurl](https://attack.mitre.org/groups/G1039) is a threat actor active since 2018 notable for corporate espionage targeting a variety of locations, including Ukraine, Canada and the United Kingdom, and a variety of…

[MuddyWater](https://attack.mitre.org/groups/G0069) is a cyber espionage group assessed to be a subordinate element within Iran's Ministry of Intelligence and Security (MOIS).(Citation: CYBERCOM Iranian Intel Cyber January 2022) Since at…

[APT32](https://attack.mitre.org/groups/G0050) is a suspected Vietnam-based threat group that has been active since at least 2014. The group has targeted multiple private sector industries as well as foreign governments,…

[APT3](https://attack.mitre.org/groups/G0022) is a China-based threat group that researchers have attributed to China's Ministry of State Security.(Citation: FireEye Clandestine Wolf)(Citation: Recorded Future APT3 May 2017) This group is responsible…