After upgrading to 188.8.131.52-109 I received a warning that the application rule doesn't match any applications.
The rule was set to match evasive/stealth tactics.
When I check the rule, there's no tags or categories available.
Was this removed in 184.108.40.206?
The application database depends on the VDB version being used on the FMC.
I am able to see both stealth tactics tag and evasive in 220.127.116.11 with VDB 294 but separately.
I have attached screenshots. Though not sure if I understand the problem yet.
Hope it helps,
I'm using VDB 294 as well
Model: Cisco Firepower 2120 Threat Defense (77) Version 18.104.22.168 (Build 109)
Rules update version : 2018-03-22-001-vrtVDB version : 294
Not seeing any application tags
You might want to open TAC case. VDB might not have installed properly.
We might need to rollback and reinstall the VDB.
Hope that helps,
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