""ET TROJAN BunnyLoader Heartbeat Acknowledgement""

SID: 2048403

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, created_at 2023_10_04, deployment Perimeter, malware_family BunnyLoader, performance_impact Low, confidence High, updated_at 2023_10_04, reviewed_at 2023_10_04

Reference:

• md5

• dbf727e1effc3631ae634d95a0d88bf3

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: "Content-Length|3a 20|13|0d 0a|"

• Value: "Client|20|online"

Within:

PCRE:

Special Options:

• http_stat_code

• file_data

• fast_pattern

source