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U-bomb

U-Bomb is a low-profile ransomware operation discovered in March 2023 that arrives via phishing emails and uses third-party offensive frameworks (BRC4, Sliver, Cobalt Strike) for lateral movement before deploying its encryptor, likely becoming inactive in the second half of 2023.


Known Locations (1)
Favicon Title Type Available Last Visit Server Info FQDN
favicon U-bomb No 2026-04-28T07:21:59 contiuevxdgdhn3zl2kubpajtfgqq4ssj2ipv6ujw7fwhggev3rk6hqd.onion

Ransom Notes (1)

YARA Rules (1)

Indicators of Compromise (IoCs) (1)
Email 1
Type IOC
Email ellen0xffff@proton.me