""ET TROJAN DonotGroup Related CnC Domain in DNS Lookup (letentinfo .info)""

SID: 2052100

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2024_04_16, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_04_16

Reference:

• Link

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: "|0a|letentinfo|04|info|00|"

Within: 17

PCRE:

Special Options:

• fast_pattern

• nocase

source