Detectionhightest
Sysinternals PsSuspend Suspicious Execution
Detects suspicious execution of Sysinternals PsSuspend, where the utility is used to suspend critical processes such as AV or EDR to bypass defenses
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Launch
Nasreddine Bencherchali (Nextron Systems)Created Thu Mar 234beb6ae0-f85b-41e2-8f18-8668abc8af78windows
Log Source
WindowsProcess Creation
ProductWindows← raw: windows
CategoryProcess Creation← raw: process_creation
Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.
Detection Logic
Detection Logic2 selectors
detection:
selection_img:
- OriginalFileName: 'pssuspend.exe'
- Image|endswith:
- '\pssuspend.exe'
- '\pssuspend64.exe'
selection_cli:
# Add more interesting/critical processes
CommandLine|contains: 'msmpeng.exe'
condition: all of selection_*False Positives
Unlikely
False positives are unlikely for most environments. High confidence detection.
MITRE ATT&CK
Tactics
Sub-techniques
Rule Metadata
Rule ID
4beb6ae0-f85b-41e2-8f18-8668abc8af78
Status
test
Level
high
Type
Detection
Created
Thu Mar 23
Path
rules/windows/process_creation/proc_creation_win_sysinternals_pssuspend_susp_execution.yml
Raw Tags
attack.defense-evasionattack.t1562.001