LoFP
/
t1210
t1210
Title
Tags
3rd party apache modules - https://bz.apache.org/bugzilla/show_bug.cgi?id=46185
t1190
t1210
sigma
bad connections or network interruptions
t1210
windows
sigma
environments that leverage dns responses over 60k bytes will result in false positives - if this traffic is predictable and expected, it should be filtered out. additionally, this detection rule could be triggered by an authorized vulnerability scan or compromise assessment.
t1210
network
elastic
exploits that were attempted but unsuccessful.
t1021
t1021.006
t1068
t1190
t1203
t1210
zeek
sigma
false positives will be present based on gateways in use, modify the status field as needed.
t1068
t1133
t1190
t1210
web server
splunk
false positives will most likely be present based on risk scoring and how the organization handles system to system communication. filter, or modify as needed. in addition to count by analytics, adding a risk score may be useful. in our testing, with 22 events over 30 days, the risk scores ranged from 500 to 80,000. your organization will be different, monitor and modify as needed.
t1210
t1484
endpoint
splunk
files generated during installation will generate a lot of noise, so the rule should only be enabled after the fact.
t1190
t1210
windows
elastic
legitimate processes may be spawned from the microsoft exchange server unified messaging (um) service. if known processes are causing false positives, they can be exempted from the rule.
t1190
t1210
windows
elastic
legitimate use of quick assist in the environment.
t1071
t1071.001
t1210
t1219
windows
sigma
none thus far found
t1210
windows
splunk
scanning attempts with the abnormal use of the http post method with no indication of code execution within the http client (request) body. an example would be vulnerability scanners trying to identify unpatched versions while not actually exploiting the vulnerability. see description for investigation tips.
t1021
t1021.006
t1068
t1190
t1203
t1210
zeek
sigma
this rule was tuned using the following baseline: https://raw.githubusercontent.com/microsoft/css-exchange/main/security/baselines/baseline_15.2.792.5.csv from microsoft. depending on version, consult https://github.com/microsoft/css-exchange/tree/main/security/baselines to help determine normalcy.
t1190
t1210
windows
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
t1486
t1489
t1490
t1496
t1498
t1499
t1499.001
t1505
t1505.003
t1526
t1528
t1543
t1543.003
t1546
t1546.008
t1546.015
t1548
t1548.003
t1550
t1550.003
t1552
t1552.004
t1553
t1553.004
t1555
t1556
t1557
t1557.001
t1558
t1558.003
t1562
t1562.001
t1562.002
t1562.010
t1564
t1564.004
t1566
t1569
t1569.002
t1570
t1574
t1574.001
t1574.002
t1586
t1587
t1587.001
t1588
t1588.002
t1590
t1590.001
t1590.002
t1620
t1649
windows
opencanary
okta
m365
azure
bitbucket
macos
linux
sigma
werfault.exe will legitimately spawn when dns.exe crashes, but the dns service is very stable and so this is a low occurring event. denial of service (dos) attempts by intentionally crashing the service will also cause werfault.exe to spawn.
t1210
windows
elastic