User user-c is showing anomalous behavior across multiple machines, attempting to run administrative tools such as cmd.exe and appwiz.CPL, which are commonly used by attackers for system modification. The activity pattern suggests a lateral movement attempt, potentially indicating a compromised account.
* user-a (A) and user-b (B) attempted to run applications but only on one machine, suggesting less likelihood of compromise.
* user-d (D) was blocked running cmd.com, but user-c's pattern is more consistent with an attack technique.