I can answer that. Unintentionally, one of our Lunar spaceships got a little contamination on it, because a NASA employee sneezed. The bacteria *survived* for 2.6 years on the Moon, in vacuum, temperature extremes, and harsh radiation and was returned to Earth. A variety of Streptococcus.
The big question remains: what if it didn’t just survive, but was changed?
Are you talking about Surveyor 3? Apollo 12 landed near that probe; the astronauts walked over to it, cut off some pieces and brought them back.