There's no literal translation in Russian, but I'd say "приветик/салют"
You can say ‘’всем привет’’ or the more formal and polite version of ‘’всем здравствуйте’’
"Привет", "Здравствуй(те)".
привет, всем привет, здравствуйте, приветики
Привет там
Literally. Ahah
Answers above are certainly better literary