[metadata] creation_date = "2020/08/21" ecs_version = ["1.6.0"] maturity = "production" updated_date = "2020/08/21" [rule] author = ["Elastic"] description = """ Identifies suspicious .NET code execution. connections. """ index = ["winlogbeat-*", "logs-endpoint.events.*"] language = "kuery" license = "Elastic License" name = "Suspicious .NET Code Compilation" risk_score = 47 rule_id = "201200f1-a99b-43fb-88ed-f65a45c4972c" severity = "medium" tags = ["Elastic", "Windows"] type = "query" query = ''' event.category:process and event.type:(start or process_started) and process.name:(csc.exe or vbc.exe) and process.parent.name:(wscript.exe or mshta.exe or wscript.exe or wmic.exe or svchost.exe or rundll32.exe or cmstp.exe or regsvr32.exe) ''' [[rule.threat]] framework = "MITRE ATT&CK" [[rule.threat.technique]] id = "T1093" name = "Process Injection" reference = "https://attack.mitre.org/techniques/T1055/" [rule.threat.tactic] id = "TA0005" name = "Defense Evasion" reference = "https://attack.mitre.org/tactics/TA0005/"