How do you know?
2 of hoax's "friends" are Leranko. Rest all play Dota 2. The non-Leranko friends have more varied games. "Hoax" has games that only Leranko doesn't have & [Beta] Leranko & your stolen acct. have sign off times within minutes of each other. The non-main Leranko acct. is also Vac Banned. So I can assume[STG] Leranko stole your acct, rest are friends or his other alt account.
Check games & playtime as well. Also your stolen acct & the Leranko accts are never online at same time.