""ET TROJAN Observed CobaltStrike/TEARDROP CnC Domain Domain in TLS SNI (mobilnweb .com)""

SID: 2031451

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_12_23, deployment Perimeter, malware_family CobaltStrike, signature_severity Major, updated_at 2020_12_23

Reference:

• Link

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: 443

Flow: established,to_server

Contents:

• Value: "|00 00 0d|mobilnweb.com|00|"

Within:

PCRE:

Special Options:

• fast_pattern

source