""ET TROJAN Win32/Caypnamer.A RAT CnC Keepalive""

SID: 2038663

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2022_08_29, deployment Perimeter, performance_impact Low, signature_severity Major, updated_at 2022_08_30

Reference:

• md5

• 8a295c02f1ed045a371f5ed945fcfa19

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: any

Flow: established,to_server

Contents:

• Value: "|60 55 4a 3f 34 29 0f 00 00 00 ff 0e 19 24 2f|"

Within:

PCRE:

Special Options:

• fast_pattern

source