MYRA RAT systemd-userdbd Masquerade and memfd Fileless Execution (Miasma)
Detects MYRA RAT masquerading as the legitimate 'systemd-userdbd' daemon by identifying processes with that name running outside expected system paths. It also identifies fileless execution patterns where Node.js or npm processes spawn memfd-backed executables, reference deleted files, or initiate processes using the 'systemd-userdbd' name, characteristic of the Miasma campaign.
Sigma
