""ET TROJAN njRAT/Bladabindi Variant (Lime) CnC Checkin""

SID: 2025136

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_12_06, deployment Perimeter, malware_family njrat, performance_impact Moderate, signature_severity Major, updated_at 2017_12_06

Reference:

• md5

• ce37b5b473377810bc76e0491533b4e7

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: any

Flow: established,to_server

Contents:

• Value: "|00|ll"

• Value: "TGltZV8"

Within: 30

PCRE: "/^[0-9]{2,3}\x00\x6c\x6c(?P[\x20-\x2f\x30-\x39\x3a-\x40\x5b-\x60\x7b-\x7e][\x20-\x7e]+?[\x20-\x2f\x30-\x39\x3a-\x40\x5b-\x60\x7b-\x7e])(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})(?P=var)[^\r\n]+(?P=var)$/s"

Special Options:

• fast_pattern

source