MuddyViper - S9032 (7b92e996-b535-4159-be16-3c3aee4edf54)
MuddyViper is custom backdoor written in C and C++ used by MuddyWater for command and control (C2) communications and persistence. MuddyViper is loaded by Fooder and sends frequent messages to the C2 server.(Citation: ESET_MuddyWater_Dec2025)