ATT&CK MATRIX
Reference · MITREThe full MITRE ATT&CK Enterprise kill chain — every tactic column and technique cell, collected fresh from MITRE's public STIX. Cell intensity = how many tracked threat groups use the technique; ◆ = cited in advisories we collect. Click a technique for detail; filter by group to see one actor's playbook.
Adversaries may evade defensive mechanisms by executing commands that hide from process interrupt signals. Many operating systems use signals to deliver messages to control process behavior. Command interpreters often include specific commands/flags that ignore errors and other hangups, such as when the user of the active session logs off.(Citation: Linux Signal Man) These interrupt signals may also be used by defensive tools and/or analysts to pause or terminate specified running processes. Adversaries may invoke processes using `nohup`, [PowerShell](https://attack.mitre.org/techniques/T1059/001) `-ErrorAction SilentlyContinue`, or similar commands that may be immune to hangups.(Citation…