""ET MALWARE Win32/RemoteUtilities Checkin via SMTP M2""

SID: 2034644

Revision: 3

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_12_09, deployment Perimeter, performance_impact Low, signature_severity Minor, updated_at 2022_01_12

Reference:

• md5

• 8574a1f23e4292f6d76857df1f70ff0e

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: [25,26,587]

Flow: established,to_server

Contents:

• Value: "|0d 0a 0d 0a|UmVtb3RlIFV0aWxpdGllcy"

Within:

PCRE: "/(?:DQpTZXJ2ZXI6I|0KU2VydmVyOi|NClNlcnZlcjog)/R"

Special Options:

• fast_pattern

source