""ET TROJAN Win32/Agent.TWI CnC Checkin""

SID: 2037898

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_08_02, deployment Perimeter, performance_impact Low, signature_severity Major, updated_at 2022_08_02

Reference:

• md5

• a487ab85983baa856fb089d9d01993fc

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: 5000

Flow: established,to_server

Contents:

• Value: "GET|20|/msg?msg=" Depth: 13

• Value: "&token="

• Value: ":5000/msg?msg="

Within:

PCRE: "/^Referer\x3a\x20[^\r\n]+&token=/mi"

Special Options:

• fast_pattern

source