Scarlett Johansson says she's going to 'sabotage' Paul Rudd when he hosts 'SNL' next month (Exclusive)

Scarlett Johansson says she's got some tricks up her sleeve when it comes to giving Paul Rudd a hard time when he hosts Saturday Night Live next month.

The stunning star dazzled in a shimmering, curve-hugging silver gown at the premiere of Avengers: Endgameat the Los Angeles Convention Center on Monday, where she walked the red carpet alongside her boyfriend, SNL co-head writer and "Weekend Update" co-anchor Colin Jost.

Johansson was all smiles as she showed some serious leg while walking arm in arm with her man, who dressed to the nines in a flawlessly tailored grey suit.

ET's Kevin Frazier spoke with Johansson at the star-studded premiere, and she jokingly explained how she plans on using her contacts at the show (i.e. her boyfriend) to mess with Rudd when he takes center stage in Studio 8H.

"I've got connections. I'm gonna make sure that his time is really difficult, you guys," Johansson explained. "I'm gonna sabotage him. I'm gonna come in from the inside [so] he doesn't know what's coming."

Addressing the camera directly, Johanson jokingly issued a warning directly to her Avengers co-star: "I'm coming for you, Paul! Watch out!"

PHOTOS: Scarlett Johansson and Colin Jost together

17 PHOTOS
Colin Jost and Scarlett Johansson together
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Colin Jost and Scarlett Johansson together
LOS ANGELES, CALIFORNIA - APRIL 22: Colin Jost and Scarlett Johansson attends the World Premiere of Walt Disney Studios Motion Pictures 'Avengers: Endgame' at Los Angeles Convention Center on April 22, 2019 in Los Angeles, California. (Photo by Jeff Kravitz/FilmMagic)
LOS ANGELES, CALIFORNIA - APRIL 22: Colin Jost and Scarlett Johansson attend the World Premiere Of Walt Disney Studios Motion Pictures 'Avengers: Endgame' at Los Angeles Convention Center on April 22, 2019 in Los Angeles, California. (Photo by Jon Kopaloff/Getty Images)
LOS ANGELES, CA - SEPTEMBER 17: Scarlett Johansson and Colin Jost attend the 70th Emmy Awards at Microsoft Theater on September 17, 2018 in Los Angeles, California. (Photo by Dan MacMedan/Getty Images)
LOS ANGELES, CA - SEPTEMBER 17: Scarlett Johansson and Colin Jost attend the 70th Emmy Awards - Arrivals at Microsoft Theater on September 17, 2018 in Los Angeles, California. (Photo by David Crotty/Patrick McMullan via Getty Images)
NEW YORK, NY - MAY 07: Actor Scarlett Johansson and comedian Colin Jost attend the Heavenly Bodies: Fashion & The Catholic Imagination Costume Institute Gala at The Metropolitan Museum of Art on May 7, 2018 in New York City. (Photo by Noam Galai/Getty Images for New York Magazine)
NEW YORK, NY - MAY 07: Actor Scarlett Johansson and comedian Colin Jost attend the Heavenly Bodies: Fashion & The Catholic Imagination Costume Institute Gala at The Metropolitan Museum of Art on May 7, 2018 in New York City. (Photo by Jason Kempin/Getty Images)
NEW YORK, NY - MAY 07: Scarlett Johansson and Colin Jost attend the Heavenly Bodies: Fashion & The Catholic Imagination Costume Institute Gala at The Metropolitan Museum of Art on May 7, 2018 in New York City. (Photo by Theo Wargo/Getty Images for Huffington Post)
NEW YORK, NY - MAY 07: Colin Jost and Scarlett Johansson attends the Heavenly Bodies: Fashion & The Catholic Imagination Costume Institute Gala at The Metropolitan Museum of Art on May 7, 2018 in New York City. (Photo by Frazer Harrison/FilmMagic)
NEW YORK, NY - MAY 07: Colin Jost and Scarlett Johansson attend the Heavenly Bodies: Fashion & The Catholic Imagination Costume Institute Gala at The Metropolitan Museum of Art on May 7, 2018 in New York City. (Photo by James Devaney/GC Images)
HOLLYWOOD, CA - APRIL 23: Actors Scarlett Johansson and Colin Jost attend the premiere of Disney and Marvel's 'Avengers: Infinity War' on April 23, 2018 in Hollywood, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
LOS ANGELES, CA - APRIL 23: Scarlett Johansson, Colin Jost arrives at the Premiere Of Disney And Marvel's 'Avengers: Infinity War' on April 23, 2018 in Los Angeles, California. (Photo by Steve Granitz/WireImage)
LOS ANGELES, CA - APRIL 23: Scarlett Johansson, Colin Jost arrives at the Premiere Of Disney And Marvel's 'Avengers: Infinity War' on April 23, 2018 in Los Angeles, California. (Photo by Steve Granitz/WireImage)
LOS ANGELES, CA - APRIL 23: Scarlett Johansson, Colin Jost arrives at the Premiere Of Disney And Marvel's 'Avengers: Infinity War' on April 23, 2018 in Los Angeles, California. (Photo by Steve Granitz/WireImage)
NEW YORK, NY - NOVEMBER 30: Colin Jost and Scarlett Johansson attends The 2017 Museum Gala at American Museum of Natural History on November 30, 2017 in New York City. (Photo by Sylvain Gaboury/Patrick McMullan via Getty Images)
NEW YORK, NY - NOVEMBER 30: Colin Jost and Scarlett Johansson attends The 2017 Museum Gala at American Museum of Natural History on November 30, 2017 in New York City. (Photo by Sylvain Gaboury/Patrick McMullan via Getty Images)
NEW YORK, NY - NOVEMBER 15: Scarlett Johansson and Colin Jost attend American Museum Of Natural History's 2018 Museum Gala at American Museum of Natural History on November 15, 2018 in New York City. (Photo by Sylvain Gaboury/Patrick McMullan via Getty Images)
Actress Scarlett Johansson and boyfriend comedian Colin Jost attend the American Museum of Natural History's 2018 Museum Gala on November 15, 2018 in New York City. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
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This will be Rudd's fourth time hosting the late-night sketch comedy series. Johansson herself has hosted the show five times, most recently in season 42 in March 2017.

The actress -- who once again plays S.H.I.E.L.D. agent and world class spy Black Widow in Endgame after surviving the genocidal snap at the conclusion of Infinity War -- will soon be starring in her own Black Widow spin-off, but the actress had to stay mum about the project entirely.

"My lips are sealed. I am under lock and key," Johansson said. "I would like to talk about one thing I do professionally but it's not gonna be with Marvel. That's just the way it goes."

In the meantime, fans can see Black Widow in action when Avengers: Endgame hits theaters April 26.

RELATED: All the photos from the "Avengers: Endgame" premiere

42 PHOTOS
'Avengers: Endgame' red carpet arrivals
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'Avengers: Endgame' red carpet arrivals
US actress Scarlett Johansson arrives for the World premiere of Marvel Studios' 'Avengers: Endgame' at the Los Angeles Convention Center on April 22, 2019 in Los Angeles. (Photo by VALERIE MACON / AFP) (Photo credit should read VALERIE MACON/AFP/Getty Images)
LOS ANGELES, CALIFORNIA - APRIL 22: Scarlett Johansson attends the World Premiere of Walt Disney Studios Motion Pictures 'Avengers: Endgame' at Los Angeles Convention Center on April 22, 2019 in Los Angeles, California. (Photo by Jeff Kravitz/FilmMagic)
US singer Miley Cyrus arrives for the World premiere of Marvel Studios' 'Avengers: Endgame' at the Los Angeles Convention Center on April 22, 2019 in Los Angeles. (Photo by VALERIE MACON / AFP) (Photo credit should read VALERIE MACON/AFP/Getty Images)
US singer Miley Cyrus and Australian actor Liam Hemsworth arrive for the World premiere of Marvel Studios' 'Avengers: Endgame' at the Los Angeles Convention Center on April 22, 2019 in Los Angeles. (Photo by VALERIE MACON / AFP) (Photo credit should read VALERIE MACON/AFP/Getty Images)
US actor Chris Pratt and US author Katherine Schwarzenegger arrive for the World premiere of Marvel Studios' 'Avengers: Endgame' at the Los Angeles Convention Center on April 22, 2019 in Los Angeles. (Photo by VALERIE MACON / AFP) (Photo credit should read VALERIE MACON/AFP/Getty Images)
US actress Gwyneth Paltrow arrives for the World premiere of Marvel Studios' 'Avengers: Endgame' at the Los Angeles Convention Center on April 22, 2019 in Los Angeles. (Photo by VALERIE MACON / AFP) (Photo credit should read VALERIE MACON/AFP/Getty Images)
Australian actor Chris Hemsworth and his wife Spanish actress Elsa Pataky arrive for the World premiere of Marvel Studios' 'Avengers: Endgame' at the Los Angeles Convention Center on April 22, 2019 in Los Angeles. (Photo by VALERIE MACON / AFP) (Photo credit should read VALERIE MACON/AFP/Getty Images)
Actress Zoe Saldana arrives for the World premiere of Marvel Studios' 'Avengers: Endgame' at the Los Angeles Convention Center on April 22, 2019 in Los Angeles. (Photo by VALERIE MACON / AFP) / The erroneous mention[s] appearing in the metadata of this photo by VALERIE MACON has been modified in AFP systems in the following manner: [Actress Zoe Saldana] instead of [British actress Thandie Newton]. Please immediately remove the erroneous mention[s] from all your online services and delete it (them) from your servers. If you have been authorized by AFP to distribute it (them) to third parties, please ensure that the same actions are carried out by them. Failure to promptly comply with these instructions will entail liability on your part for any continued or post notification usage. Therefore we thank you very much for all your attention and prompt action. We are sorry for the inconvenience this notification may cause and remain at your disposal for any further information you may require. (Photo credit should read VALERIE MACON/AFP/Getty Images)
US actress Scarlett Johansson and US actor Colin Jost arrive for the World premiere of Marvel Studios' 'Avengers: Endgame' at the Los Angeles Convention Center on April 22, 2019 in Los Angeles. (Photo by VALERIE MACON / AFP) (Photo credit should read VALERIE MACON/AFP/Getty Images)
(L-R) US actor Mark Ruffalo, Odette Ruffalo, Bella Ruffalo, US actress Sunrise Coigney and Keen Ruffalo arrive for the World premiere of Marvel Studios' 'Avengers: Endgame' at the Los Angeles Convention Center on April 22, 2019 in Los Angeles. (Photo by VALERIE MACON / AFP) (Photo credit should read VALERIE MACON/AFP/Getty Images)
US actress Danai Gurira arrives for the World premiere of Marvel Studios' 'Avengers: Endgame' at the Los Angeles Convention Center on April 22, 2019 in Los Angeles. (Photo by VALERIE MACON / AFP) (Photo credit should read VALERIE MACON/AFP/Getty Images)
US actress Brie Larson arrives for the World premiere of Marvel Studios' 'Avengers: Endgame' at the Los Angeles Convention Center on April 22, 2019 in Los Angeles. (Photo by VALERIE MACON / AFP) (Photo credit should read VALERIE MACON/AFP/Getty Images)
US actor Bradley Cooper arrives for the World premiere of Marvel Studios' 'Avengers: Endgame' at the Los Angeles Convention Center on April 22, 2019 in Los Angeles. (Photo by VALERIE MACON / AFP) (Photo credit should read VALERIE MACON/AFP/Getty Images)
US actress Tessa Thompson arrives for the World premiere of Marvel Studios' 'Avengers: Endgame' at the Los Angeles Convention Center on April 22, 2019 in Los Angeles. (Photo by VALERIE MACON / AFP) (Photo credit should read VALERIE MACON/AFP/Getty Images)
US actor Paul Rudd arrives for the World premiere of Marvel Studios' 'Avengers: Endgame' at the Los Angeles Convention Center on April 22, 2019 in Los Angeles. (Photo by VALERIE MACON / AFP) (Photo credit should read VALERIE MACON/AFP/Getty Images)
(L-R) Actor Matt Damon, his wife Luciana Barroso, Samantha Hemsworth and her husband actor Luke Hemsworth arrive for the World premiere of Marvel Studios' 'Avengers: Endgame' at the Los Angeles Convention Center on April 22, 2019 in Los Angeles. (Photo by VALERIE MACON / AFP) (Photo credit should read VALERIE MACON/AFP/Getty Images)
US actor Jeremy Renner arrives for the World premiere of Marvel Studios' 'Avengers: Endgame' at the Los Angeles Convention Center on April 22, 2019 in Los Angeles. (Photo by VALERIE MACON / AFP) (Photo credit should read VALERIE MACON/AFP/Getty Images)
LOS ANGELES, CALIFORNIA - APRIL 22: Elisabeth Olsen attends the World Premiere of Walt Disney Studios Motion Pictures 'Avengers: Endgame' at Los Angeles Convention Center on April 22, 2019 in Los Angeles, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
English actor Benedict Cumberbatch and English theatre director Sophie Hunter arrive for the World premiere of Marvel Studios' 'Avengers: Endgame' at the Los Angeles Convention Center on April 22, 2019 in Los Angeles. (Photo by VALERIE MACON / AFP) (Photo credit should read VALERIE MACON/AFP/Getty Images)
US actor Chris Evans arrives for the World premiere of Marvel Studios' 'Avengers: Endgame' at the Los Angeles Convention Center on April 22, 2019 in Los Angeles. (Photo by VALERIE MACON / AFP) (Photo credit should read VALERIE MACON/AFP/Getty Images)
US/Israeli actress Natalie Portman arrives for the World premiere of Marvel Studios' 'Avengers: Endgame' at the Los Angeles Convention Center on April 22, 2019 in Los Angeles. (Photo by VALERIE MACON / AFP) (Photo credit should read VALERIE MACON/AFP/Getty Images)
US actor Josh Brolin and wife US model Kathryn Boyd arrive for the World premiere of Marvel Studios' 'Avengers: Endgame' at the Los Angeles Convention Center on April 22, 2019 in Los Angeles. (Photo by VALERIE MACON / AFP) (Photo credit should read VALERIE MACON/AFP/Getty Images)
Robert Downey Jr. showed up to the world premiere of 'Avengers: Endgame' in the Audi e-tron GT Concept on April 22, 2019 in Hollywood, California. (Photo by Joe Scarnici/Getty Images for Audi)
US actor Don Cheadle and wife US actress Bridgid Coulter arrive for the World premiere of Marvel Studios' 'Avengers: Endgame' at the Los Angeles Convention Center on April 22, 2019 in Los Angeles. (Photo by VALERIE MACON / AFP) (Photo credit should read VALERIE MACON/AFP/Getty Images)
LOS ANGELES, CALIFORNIA - APRIL 22: Linda Cardellini attends the World Premiere of Walt Disney Studios Motion Pictures 'Avengers: Endgame' at Los Angeles Convention Center on April 22, 2019 in Los Angeles, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
US actor Jon Favreau arrives for the World premiere of Marvel Studios' 'Avengers: Endgame' at the Los Angeles Convention Center on April 22, 2019 in Los Angeles. (Photo by VALERIE MACON / AFP) (Photo credit should read VALERIE MACON/AFP/Getty Images)
French actress Pom Klementieff arrives for the World premiere of Marvel Studios' 'Avengers: Endgame' with makeup by Jillian Dempsey.
LOS ANGELES, CA - APRIL 22: Ken Jeong arrives for the World Premiere Of Walt Disney Studios Motion Pictures 'Avengers: Endgame' held at Los Angeles Convention Center on April 22, 2019 in Los Angeles, California. (Photo by Albert L. Ortega/Getty Images)
LOS ANGELES, CALIFORNIA - APRIL 22: Laurence Fishburne attends the World Premiere of Walt Disney Studios Motion Pictures 'Avengers: Endgame' at Los Angeles Convention Center on April 22, 2019 in Los Angeles, California. (Photo by Jeff Kravitz/FilmMagic)
Canadian actress Cobie Smulders arrives for the World premiere of Marvel Studios' 'Avengers: Endgame' at the Los Angeles Convention Center on April 22, 2019 in Los Angeles. (Photo by VALERIE MACON / AFP) (Photo credit should read VALERIE MACON/AFP/Getty Images)
President of Marvel Studios producer Kevin Feige and his wife Caitlin Feige arrive for the World premiere of Marvel Studios' 'Avengers: Endgame' at the Los Angeles Convention Center on April 22, 2019 in Los Angeles. (Photo by VALERIE MACON / AFP) (Photo credit should read VALERIE MACON/AFP/Getty Images)
LOS ANGELES, CALIFORNIA - APRIL 22: Chloe Bennet attends the World Premiere of Walt Disney Studios Motion Pictures 'Avengers: Endgame' at Los Angeles Convention Center on April 22, 2019 in Los Angeles, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
Romanian/US actor Sebastian Stan arrives for the World premiere of Marvel Studios' 'Avengers: Endgame' at the Los Angeles Convention Center on April 22, 2019 in Los Angeles. (Photo by VALERIE MACON / AFP) (Photo credit should read VALERIE MACON/AFP/Getty Images)
US actor Mark Ruffalo and US actress Sunrise Coigney arrives for the World premiere of Marvel Studios' 'Avengers: Endgame' at the Los Angeles Convention Center on April 22, 2019 in Los Angeles. (Photo by VALERIE MACON / AFP) (Photo credit should read VALERIE MACON/AFP/Getty Images)
Spanish actress Elsa Pataky arrives for the World premiere of Marvel Studios' 'Avengers: Endgame' at the Los Angeles Convention Center on April 22, 2019 in Los Angeles. (Photo by VALERIE MACON / AFP) (Photo credit should read VALERIE MACON/AFP/Getty Images)
US actor Robert Downey Jr. and Susan Downey arrive for the World premiere of Marvel Studios' 'Avengers: Endgame' at the Los Angeles Convention Center on April 22, 2019 in Los Angeles. (Photo by VALERIE MACON / AFP) (Photo credit should read VALERIE MACON/AFP/Getty Images)
The Walt Disney Company CEO, Robert Iger arrives for the World premiere of Marvel Studios' 'Avengers: Endgame' at the Los Angeles Convention Center on April 22, 2019 in Los Angeles. (Photo by VALERIE MACON / AFP) (Photo credit should read VALERIE MACON/AFP/Getty Images)
LOS ANGELES, CA - APRIL 22: Ming Na Wen arrives for the World Premiere Of Walt Disney Studios Motion Pictures 'Avengers: Endgame' held at Los Angeles Convention Center on April 22, 2019 in Los Angeles, California. (Photo by Albert L. Ortega/Getty Images)
LOS ANGELES, CALIFORNIA - APRIL 22: AJ McLean attends the World Premiere of Walt Disney Studios Motion Pictures 'Avengers: Endgame' at Los Angeles Convention Center on April 22, 2019 in Los Angeles, California. (Photo by Jeff Kravitz/FilmMagic)
LOS ANGELES, CALIFORNIA - APRIL 22: Kevin Pollok attends the World Premiere of Walt Disney Studios Motion Pictures 'Avengers: Endgame' at Los Angeles Convention Center on April 22, 2019 in Los Angeles, California. (Photo by Jeff Kravitz/FilmMagic)
Natalie Portman posed in front of an Audi at the world premiere of 'Avengers: Endgame' on April 22, 2019 in Hollywood, California. (Photo by Stefanie Keenan/Getty Images for Audi)
LOS ANGELES, CALIFORNIA - APRIL 22: Meg Donnelly attends the World Premiere of Walt Disney Studios Motion Pictures 'Avengers: Endgame' at Los Angeles Convention Center on April 22, 2019 in Los Angeles, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
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