""ET TROJAN Win32/ScarCruf Payload Inbound""

SID: 2044937

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_04_13, deployment Perimeter, malware_family ScarCruft, signature_severity Major, tag APT_C_28, updated_at 2023_04_19

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

  • Value: "|4d 53 43 46|" Depth: 4

  • Value: "trap.bat"

  • Value: "check.bat"

  • Value: "rdssvc32.dll"

  • Value: "rdssvc64.dll"

Within:

PCRE:

Special Options:

  • file_data

  • fast_pattern

source