LoFP LoFP / changes to the shell profile tend to be noisy, a tuning per your environment will be required.

Techniques

Sample rules

Bash Shell Profile Modification

Description

Both ~/.bash_profile and ~/.bashrc are files containing shell commands that are run when Bash is invoked. These files are executed in a user’s context, either interactively or non-interactively, when a user logs in so that their environment is set correctly. Adversaries may abuse this to establish persistence by executing malicious content triggered by a user’s shell.

Detection logic

event.category:file and host.os.type:(linux or macos) and event.type:change and not event.action:("rename" or "extended_attributes_delete") and
  file.name:(".bash_profile" or ".profile" or ".bashrc" or ".zshenv" or ".zshrc") and file.path:(/home/* or /Users/*) and 
  process.name:(* and not (sudo or vim or zsh or env or nano or bash or Terminal or xpcproxy or login or cat or cp or
  launchctl or java or dnf or tailwatchd or ldconfig or yum or semodule or cpanellogd or dockerd or authselect or chmod or
  dnf-automatic or git or dpkg or platform-python)) and
  not process.executable:(/Applications/* or /private/var/folders/* or /usr/local/* or /opt/saltstack/salt/bin/*)