""ET TROJAN RShell CnC Domain (center .veryssl .org) in DNS Lookup""

SID: 2038539

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_and_Server, created_at 2022_08_16, deployment Perimeter, malware_family Rshell, performance_impact Low, signature_severity Major, updated_at 2022_08_16

Reference:

Protocol: udp

Source Network: $HOME_NET

Source Port: any

Destination Network: any

Destination Port: 53

Flow:

Contents:

  • Value: "|01|" Depth: 1 Offset: 2

  • Value: "|00 01 00 00 00 00 00|"

  • Value: "|06|center|07|veryssl|03|org|00|"

Within: 20

PCRE:

Special Options:

  • nocase

  • fast_pattern

source