""ET TROJAN Observed Malicious SSL Cert (AsyncRAT CnC)""

SID: 2031059

Revision: 3

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2020_10_19, deployment Perimeter, malware_family AsyncRAT, performance_impact Low, signature_severity Major, tag SSL_Malicious_Cert, updated_at 2022_04_18, mitre_tactic_id TA0042, mitre_tactic_name Resource_Development, mitre_technique_id T1587, mitre_technique_name Develop_Capabilities

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: 443

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

• Value: "|16|"

• Value: "|0b|"

• Value: "|06 03 55 04 03|"

• Value: "|19|carlossaldanhacertificado"

• Value: "|06 03 55 04 03|"

• Value: "|19|carlossaldanhacertificado"

Within: 26

PCRE:

Special Options:

• fast_pattern

source