""ET TROJAN W32/Emotet CnC Beacon 1""

SID: 2024274

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_05_04, deployment Perimeter, signature_severity Major, tag c2, updated_at 2017_05_04, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel

Reference:

• md5

• 21542133a586782e7c2fa4286d98fd73

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: [443,7080,8080]

Flow: established,to_server

Contents:

• Value: "GET / HTTP/1.1|0D 0A|Cookie|3A|" Depth: 23

• Value: "User-Agent|3A| Mozilla/5.0 (compatible|3B| MSIE 8.0|3B| Windows NT 5.1|3B| SLCC1|3B| .NET CLR 1.1.4322)|0D 0A|Host|3A|"

Within:

PCRE: "/Cookie\:\ [A-Za-z0-9]{3,4}=(?:[A-Za-z0-9+\/]{4})*(?:[A-Za-z0-9+\/]{2}==|[A-Za-z0-9+\/]{3}=|[A-Za-z0-9+\/]{4})$/Smi"

Special Options:

• fast_pattern

source