""ET EXPLOIT HTTP POST Request With ysoserial In Request Body (CommonsCollections1/CommonsCollections3) M2""

SID: 2033555

Revision: 1

Class Type: attempted-admin

Metadata: attack_target Server, created_at 2021_07_28, deployment Perimeter, deployment Internal, malware_family ysoserial, signature_severity Major, tag Exploit, tag possible_exploitation, updated_at 2021_07_28, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application

Reference:

Protocol: tcp

Source Network: any

Source Port: any

Destination Network: [$HOME_NET,$HTTP_SERVERS]

Destination Port: any

Flow: established,to_server

Contents:

• Value: "POST"

• Value: "/+vADGAwAABQBzAHIAAAAyAHMAdQBuAC4AcgBlAGYAbABlAGMAdAAuAGEAbgBuAG8AdABhAHQAaQBvAG4ALgBBAG4AbgBvA"

Within:

PCRE:

Special Options:

• http_method

• fast_pattern

• http_client_body

source