attack.t1529

Potential Abuse of Linux Magic System Request Key

May 31, 2025 · attack.execution attack.t1059.004 attack.impact attack.t1529 attack.t1489 attack.t1499 ·

Detects the potential abuse of the Linux Magic SysRq (System Request) key by adversaries with root or sufficient privileges to silently manipulate or destabilize a system. By writing to /proc/sysrq-trigger, they can crash the system, kill processes, or disrupt forensic analysis—all while bypassing standard logging. Though intended for recovery and debugging, SysRq can be misused as a stealthy post-exploitation tool. It is controlled via /proc/sys/kernel/sysrq or permanently through /etc/sysctl.conf.

ESXi VM Kill Via ESXCLI

May 21, 2025 · attack.execution attack.impact attack.t1059.012 attack.t1529 ·

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Detects execution of the "esxcli" command with the "vm" and "kill" flag in order to kill/shutdown a specific VM.

Hyper-V Virtual Machine Discovery Shutdown via Powershell Cmdlets

Sep 9, 2024 · attack.defense-evasion attack.impact attack.t1578 attack.t1578.003 attack.t1529 ·

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Detects powershell process used to find and shut down local Hyper-V VMs using the Stop-VM cmdlet, as documented in the 2024 Morphisec report on Cicada3301 ransomware.

IISReset Used to Stop IIS Services

Sep 9, 2024 · attack.impact attack.defense-evasion attack.t1562 attack.t1562.001 attack.t1529 ·

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Detects the use of the iisreset.exe utility to stop IIS web services. This is used to prevent users from accessing IIS web resources, thereby releasing/preventing locks which could inhibit ransomware-related encryption.