W97M/Obeso
Obfuscated Script.f!58
X97M/Oblivion
W32/Onamu@MM
SymbOS/OneHop.A
W97M/Onex.F
W32/Opanki.worm!95b66e60
W32/Opaserv.worm.m
W97M/Opey.ae
W97M/Opey.bc
W97M/Opey.M
Ordo.A
W32/Oror.e@MM
W97M/Ostrich.gen
WM/OUTLAW.A;B
AX/OVC-Exploit
ObfuscatedHtml
Obfuscated Script.f.gen
W97M/Odious
W32/Opaserv.worm.n
W97M/Onex.b
Opachki.a
W32/Opanki.worm!MS06-040
BSD/OpenSSH.src
W97M/Opey.bd
W97M/Opey.C
Opim.A
W32/Oror.a@MM
W32/Oscarbot
Othello joke
Outlaw.C
W97M/Ozwer.A
Obfuscated Script.f
JS/Obfuscated.d
JS/Offensive
W32/Orfina@MM
W97M/Onex.e
W32/Opanki.worm
W32/Opaserv.worm
Unix/Opener.worm
W97M/Opey.bg
W97M/Opey.i
W32/Oporto
W32/Oror.b@MM
Linux/Osf
AX/OUA-Exploit
Oval.A