Detections for default user agents

[RavenTait]

Details

Detection content around default user agents used by various programs and malware.

New Analytics [4]

• HTTP C2 Framework User Agent
• HTTP Malware User Agent
• HTTP PUA User Agent
• HTTP RMM User Agent

New Lookups [4]

• Malware User Agents
• PUA User Agents
• RMM User Agents
• Suspicious C2 User Agents

New Analytic Story [1]

• Suspicious User Agents

Deprecated Analytics [1]

• HTTP Suspicious Tool User Agent

[nasbench]

LGTM

[nasbench]

@patel-bhavin if you can re-approve so we merge this. Thank you!