t1550 | LoFP

t1550

Title	Tags
a user may have multiple sessions open at the same time, such as on a mobile device and a laptop.	t1550 okta elastic
administrator activity	t1069 t1069.002 t1087 t1087.002 t1550 t1550.002 windows sigma
assumerole from unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.	t1548 t1550 t1550.001 aws sigma
assumerole may be done by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment.	t1548 t1550 t1550.001 aws sigma
automated processes that uses terraform may lead to false positives.	t1078 t1548 t1550 t1550.001 aws sigma
aws administrators or automated processes might regularly assume roles for legitimate administrative purposes. aws services might assume roles to access aws resources as part of their standard operations. automated workflows might assume roles to perform periodic tasks such as data backups, updates, or deployments.	t1548 t1550 aws elastic
based on microsoft documentation, legacy systems or applications will use rc4-hmac as the default encryption for tgt requests. specifically, systems before windows server 2008 and windows vista. newer systems will use aes128 or aes256.	t1550 endpoint splunk
custom applications may leverage the kerberos protocol. filter as needed.	t1550 endpoint splunk
developers may leverage third-party applications for legitimate purposes in google workspace such as for administrative tasks.	t1078 t1550 google_workspace elastic
environments that use ntlmv1	t1550 t1550.002 windows sigma
false positives may be generated in environments where administrative users or processes are allowed to generate certificates with subject alternative names for authentication. sources or templates used in these processes may need to be tuned out for accurate function.	t1550 t1649 endpoint splunk
getsessiontoken may be done by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. getsessiontoken from unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.	t1548 t1550 aws elastic
getsignintoken events will occur when using aws sso portal to login and will generate false positives if you do not filter for the expected user agent(s), see filter. non-sso configured roles would be abnormal and should be investigated.	t1021 t1021.007 t1550 t1550.001 aws sigma
go utilities that use staaldraad awesome ntlm library	t1059 t1087 t1114 t1550 t1550.002 windows sigma
if key credentials are regularly assigned to users, these events will need to be tuned out.	t1222.001 t1550 endpoint splunk
legacy hosts	t1550 t1550.002 windows sigma
legitimate remote administration activity	t1550 windows sigma
legitimate users may encounter access denied errors during permission testing, role transitions, or when service permissions are being reconfigured. access denials may also happen when automated processes are using outdated credentials or when new bedrock features are being explored.	t1078 t1550 aws account splunk
role chaining can be used as an access control. ensure that this behavior is not part of a legitimate operation before taking action.	t1548 t1550 aws elastic
runas command-line tool using /netonly parameter	t1550 t1550.002 windows sigma
saml provider being updated from unfamiliar users should be investigated. if known behavior is causing false positives, it can be exempted from the rule.	t1078 t1548 t1550 t1550.001 aws sigma
this is very uncommon behavior and should result in minimal false positives, ensure validity of the triggered event and include exceptions where necessary.	t1021 t1550 aws elastic
this pattern may occur during legitimate device switching or roaming between networks (e.g., corporate to mobile). developers or power users leveraging multiple environments may also trigger this detection if session persistence spans ip ranges. still, this behavior is rare and warrants investigation when rapid ip switching and graph access are involved.	t1078 t1550 azure elastic
unlikely	t1003 t1003.001 t1003.002 t1003.004 t1003.005 t1003.006 t1005 t1007 t1008 t1012 t1014 t1016 t1018 t1021 t1021.002 t1021.003 t1021.006 t1027 t1027.005 t1033 t1036 t1036.003 t1036.005 t1036.007 t1041 t1046 t1047 t1048 t1048.001 t1053 t1053.003 t1053.005 t1055 t1055.001 t1056 t1057 t1059 t1059.001 t1059.002 t1059.003 t1068 t1070 t1071 t1071.001 t1071.004 t1078 t1082 t1083 t1087 t1090 t1090.001 t1090.003 t1105 t1106 t1112 t1115 t1123 t1127 t1132 t1132.001 t1133 t1134 t1134.001 t1134.002 t1134.004 t1136 t1136.001 t1136.002 t1137 t1137.002 t1140 t1190 t1202 t1203 t1204 t1210 t1213 t1213.003 t1216 t1218 t1218.001 t1218.008 t1218.010 t1218.011 t1218.013 t1219 t1219.002 t1486 t1489 t1490 t1496 t1498 t1499 t1499.001 t1505 t1505.003 t1526 t1528 t1543 t1543.003 t1546 t1546.008 t1546.015 t1548 t1548.002 t1548.003 t1550 t1550.003 t1552 t1552.004 t1553 t1553.004 t1555 t1556 t1556.006 t1557 t1557.001 t1558 t1558.003 t1562 t1562.001 t1562.002 t1562.010 t1564 t1564.004 t1566 t1569 t1569.002 t1570 t1574 t1574.001 t1574.007 t1586 t1587 t1587.001 t1588 t1588.002 t1590 t1590.001 t1590.002 t1620 t1649 okta bitbucket azure m365 windows opencanary linux macos sigma
web browsers and third party application might generate similar activity. an initial baseline is required.	t1550 t1550.003 t1558 t1558.003 windows sigma