""ET INFO Likely Hex Encoded Executable as String - Tilde Separated""
SID: 2044376
Revision: 1
Class Type: bad-unknown
Metadata: attack_target Client_Endpoint, created_at 2023_02_28, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, updated_at 2023_02_28, mitre_tactic_id TA0005, mitre_tactic_name Defense_Evasion, mitre_technique_id T1027, mitre_technique_name Obfuscated_Files_or_Information
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|7e|5A|7e|"
-
Value: "|7e|50|7e|45|7e|00|7e|00|7e|"
-
Value: "|7e|21|7e|54|7e|68|7e|69|7e|73|7e|20|7e|70|7e|72|7e|6f|7e|67|7e|72|7e|61|7e|6d|7e|"
Within:
PCRE:
Special Options:
-
file_data
-
nocase
-
nocase
-
fast_pattern