[AcidRain](https://attack.mitre.org/software/S1125) is an ELF binary targeting modems and routers using MIPS architecture.(Citation: AcidRain JAGS 2022) [AcidRain](https://attack.mitre.org/software/S1125) is associated with the ViaSat KA-SAT communication outage that took place during the initial phases of the 2022 full-scale invasion of Ukraine. Analysis indicates overlap with another network device-targeting malware, VPNFilter, associated with [Sandworm Team](https://attack.mitre.org/groups/G0034).(Citation: AcidRain JAGS 2022) US and European government sources linked [AcidRain](https://attack.mitre.org/software/S1125) to Russian government entities, while Ukrainian government sources linked [AcidRain](https://attack.mitre.org/software/S1125) specifically to [Sandworm Team](https://attack.mitre.org/groups/G0034).(Citation: AcidRain State Department 2022)(Citation: Vincens AcidPour 2024)