""ET WEB_SERVER LEMURLOOT WebShell Interaction Header (X-siLock-Comment) - Observed in MOVEit File Transfer - OUTBOUND (Active Compromise)""
SID: 2046048
Revision: 2
Class Type: successful-admin
Metadata: attack_target Web_Server, created_at 2023_06_02, deployment Perimeter, deployment SSLDecrypt, malware_family LEMURLOOT, performance_impact Low, confidence High, signature_severity Critical, tag WebShell, updated_at 2023_06_05
Reference:
Protocol: tcp
Source Network: [$HOME_NET,$HTTP_SERVERS]
Source Port: any
Destination Network: any
Destination Port: any
Flow: established,to_client
Contents:
-
Value: "X-siLock-Comment|3a 20|"
-
Value: "comment"
Within: 7
PCRE:
Special Options:
-
http_header
-
fast_pattern
-
nocase
-
http_header