""ET TROJAN MSIL/Agent.ATS CnC Activity""

SID: 2024528

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_08_08, deployment Perimeter, performance_impact Moderate, signature_severity Major, updated_at 2017_08_08

Reference:

• md5

• 53d3ee595bc5df7e97403906f1415c21

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: any

Flow: established,to_server

Contents:

• Value: "GET|20|" Depth: 4

• Value: ".php?Hwid=S-"

• Value: "|20|HTTP/1.1|0d 0a|Host|3a|"

• Value: !"Referer|3a|"

• Value: !"User-Agent|3a|"

• Value: !"Accept"

Within:

PCRE: "/^[^&]+0-9?(?:&user=[^&]+&Ip=[^&]+&Ping=[^&]+&v=[^&]+&Ville=[^&]+&Pays=[^&]+&Region=[^&]+)?\x20HTTP/1.1\r\nHost\x3a\x20[^\r\n]+\r\n(?:Connection\x3a\x20Keep-Alive\r\n)?\r\n$/Ri"

Special Options:

• fast_pattern

source