""ET TROJAN Bitter APT Related Domain in DNS Lookup (signal-premium-app .org)""

SID: 2038773

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2022_09_08, deployment Perimeter, malware_family Bitter, signature_severity Major, updated_at 2022_09_08

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: "|12|signal-premium-app|03|org|00|"

Within: 24

PCRE:

Special Options:

• nocase

• fast_pattern

source