[FinFisher](https://attack.mitre.org/software/S0182) is a government-grade commercial surveillance spyware reportedly sold exclusively to government agencies for use in targeted and lawful criminal investigations. It is heavily obfuscated and uses multiple anti-analysis techniques. It has other variants including [Wingbird](https://attack.mitre.org/software/S0176). (Citation: FinFisher Citation) (Citation: Microsoft SIR Vol 21) (Citation: FireEye FinSpy Sept 2017) (Citation: Securelist BlackOasis Oct 2017) (Citation: Microsoft FinFisher March 2018)