""ET TROJAN Restylink Domain in DNS Lookup (officehoster .com)""

SID: 2036606

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2022_05_17, deployment Perimeter, former_category MALWARE, malware_family Restylink, performance_impact Low, signature_severity Major, updated_at 2022_12_16, reviewed_at 2023_08_21

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: "|0c|officehoster|03|com|00|"

Within: 7

PCRE:

Special Options:

• nocase

• fast_pattern

source