""ET TROJAN NanoCore RAT Keepalive Response 1""

SID: 2046909

Revision: 10

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2015_03_27, deployment Perimeter, malware_family NanoCore, performance_impact Significant, signature_severity Major, updated_at 2023_07_26, former_sid 2810290

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: [!2504,!2505,!2032,1024:]

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

  • Value: "|20 00 00 00|" Depth: 4

  • Value: !"|00 00 00 00|"

  • Value: !"|F0 DE BC 0A|"

  • Value: !"|20 00 00 00 01 00 00 00|" Depth: 8

  • Value: !"|20 00 00 00 eb 6e 00 00 00 00 00 00 08|" Depth: 13

Within: 5

PCRE:

Special Options:

source