""ET TROJAN Win32/Common RAT CnC Activity (GET)""

SID: 2048661

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 2023_10_19, deployment Perimeter, malware_family RAT, confidence High, signature_severity Critical, updated_at 2023_10_19, reviewed_at 2023_10_19

Reference:

• md5

• 6eb9f82c1b93fa4d6a79f2c06e65f83b

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

• Value: "GET"

• Value: ".php?hash="

• Value: "User-Agent|3a 20|Mozilla|2f|5|2e|0|20 28|Windows|20|NT|3b 20|Windows|20|NT|20|"

• Value: "WindowsPowerShell/"

• Value: !"Referer"

• Value: !"Accept"

Within:

PCRE: "/User-Agent\x3a\x20[^\r\n]+\r\nHost\x3a\x20[^\r\n]/H"

Special Options:

• http_method

• http_uri

• http_header

• http_header

• fast_pattern

source