Iran-linked group APT33 used new Tickler malware in attacks against organizations in the government, defense, satellite, oil and gas sectors. Microsoft researchers reported that the Iran-linked cyberespionage group APT33 (aka Peach Sandstorm, Holmium, Elfin, Refined Kitten, and Magic Hound) used new custom multi-stage backdoor called Tickler to compromise organizations in sectors such as government, defense, satellite, oil, and gas […]