Find sigma rule 
Attack: Unsecured Credentials: Bash History
Adversaries may search the bash command history on compromised systems for insecurely stored credentials. Bash keeps track of the commands users type on the command-line with the “history” utility. Once a user logs out, the history is flushed to the user’s .bash_history file. For each user, this file resides at the same location: ~/.bash_history. Typically, this file keeps track of the user’s last 500 commands. Users often type usernames and passwords on the command-line as parameters to programs, which then get saved to this file when they log out. Adversaries can abuse this by looking through the file for potential credentials. (Citation: External to DA, the OS X Way)
MITRE
Tactic
- credential-access
technique
- T1552.003
Test : Search Through sh History
OS
- linux
Description:
Search through sh history for specifice commands we want to capture
Executor
sh