""ET TROJAN Fickle Stealer C2 Server Tasking""

SID: 2053779

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_Endpoint, tls_state plaintext, created_at 2024_06_20, deployment Perimeter, malware_family Fickle_Stealer, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_06_20

Reference:

  • md5

  • 75b9ef9142a78671d449c8d22ab6be14

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

  • Value: "200"

  • Value: "|7b 22|status|22 3a 20 22|Success|22 2c 20 22|k|22 3a 20 22|" Depth: 28

  • Value: "|22|c|22 3a|"

Within: 4

PCRE: "/^[a-zA-Z0-9]{5,15}\x22\x2c\x20/R"

Special Options:

  • http_stat_code

  • file_data

source