File used by Windows subsystem for Linux
bash.exe -c calc.exe
Executes calc.exe from bash.exe
Performs execution of specified file, can be used as a defensive evasion.
C:\Windows\System32\bash.exe, C:\Windows\SysWOW64\bash.exe
BlockRule: https://docs.microsoft.com/en-us/windows/security/threat-protection/windows-defender-application-control/microsoft-recommended-block-rules, Sigma: https://github.com/SigmaHQ/sigma/blob/62d4fd26b05f4d81973e7c8e80d7c1a0c6a29d0e/rules/windows/process_creation/proc_creation_win_lolbin_bash.yml, IOC: Child process from bash.exe
Alex Ionescu (@aionescu), Asif Matadar (@d1r4c)