sigma-rules/rules_building_block/persistence_web_server_potential_sql_injection.toml

[metadata]
bypass_bbr_timing = true
creation_date = "2025/11/19"
integration = ["nginx", "apache", "apache_tomcat", "iis"]
maturity = "production"
updated_date = "2025/11/19"

[rule]
author = ["Elastic"]
building_block_type = "default"
description = """
This rule detects potential SQL injection attempts in web server requests by identifying common SQL injection patterns
in URLs. Such activity may indicate reconnaissance or exploitation attempts by attackers trying to manipulate backend
databases or extract sensitive information.
"""
from = "now-9m"
index = [
        "logs-nginx.access-*",
        "logs-apache.access-*",
        "logs-apache_tomcat.access-*",
        "logs-iis.access-*"
]
interval = "10m"
language = "eql"
license = "Elastic License v2"
name = "Web Server Potential SQL Injection Request"
risk_score = 21
rule_id = "7f7a0ee1-7b6f-466a-85b4-110fb105f5e2"
severity = "low"
tags = [
    "Domain: Web",
    "Use Case: Threat Detection",
    "Tactic: Reconnaissance",
    "Tactic: Credential Access",
    "Tactic: Persistence",
    "Tactic: Execution",
    "Tactic: Command and Control",
    "Data Source: Nginx",
    "Data Source: Apache",
    "Data Source: Apache Tomcat",
    "Data Source: IIS",
    "Rule Type: BBR",
]
timestamp_override = "event.ingested"
type = "eql"
query = '''
any where url.original like~ (
  "*%20order%20by%*", "*dbms_pipe.receive_message%28chr%*", "*waitfor%20delay%20*", "*%28select%20*from%20pg_sleep%285*", "*%28select%28sleep%285*", "*%3bselect%20pg_sleep%285*",
  "*select%20concat%28concat*", "*xp_cmdshell*", "*select*case*when*", "*and*extractvalue*select*", "*from*information_schema.tables*", "*boolean*mode*having*", "*extractvalue*concat*",
  "*case*when*sleep*", "*select*sleep*", "*dbms_lock.sleep*", "*and*sleep*", "*like*sleep*", "*csleep*", "*pgsleep*", "*char*char*char*", "*union*select*", "*concat*select*",
  "*select*else*drop*", "*having*like*", "*case*else*end*", "*if*sleep*", "*where*and*select*", "*or*1=1*", "*\"1\"=\"1\"*", "*or*'a'='a*", "*into*outfile*", "*pga_sleep*",
  "*into%20outfile*", "*into*dumpfile*", "*load_file%28*", "*load%5ffile%28*", "*cast%28*", "*convert%28*", "*cast%28%*", "*convert%28%*", "*@@version*", "*@@version_comment*",
  "*version%28*", "*user%28*", "*current_user%28*", "*database%28*", "*schema_name%28*", "*information_schema.columns*", "*information_schema.columns*", "*table_schema*",
  "*column_name*", "*dbms_pipe*", "*dbms_lock%2e*sleep*", "*dbms_lock.sleep*", "*sp_executesql*", "*sp_executesql*", "*load%20data*", "*information_schema*",  "*pg_slp*",
  "*information_schema.tables*"
)
'''

[[rule.threat]]
framework = "MITRE ATT&CK"

[[rule.threat.technique]]
id = "T1505"
name = "Server Software Component"
reference = "https://attack.mitre.org/techniques/T1505/"

[rule.threat.tactic]
id = "TA0003"
name = "Persistence"
reference = "https://attack.mitre.org/tactics/TA0003/"

[[rule.threat]]
framework = "MITRE ATT&CK"

[[rule.threat.technique]]
id = "T1059"
name = "Command and Scripting Interpreter"
reference = "https://attack.mitre.org/techniques/T1059/"

[[rule.threat.technique.subtechnique]]
id = "T1059.004"
name = "Unix Shell"
reference = "https://attack.mitre.org/techniques/T1059/004/"

[rule.threat.tactic]
id = "TA0002"
name = "Execution"
reference = "https://attack.mitre.org/tactics/TA0002/"

[[rule.threat]]
framework = "MITRE ATT&CK"

[[rule.threat.technique]]
id = "T1071"
name = "Application Layer Protocol"
reference = "https://attack.mitre.org/techniques/T1071/"

[rule.threat.tactic]
id = "TA0011"
name = "Command and Control"
reference = "https://attack.mitre.org/tactics/TA0011/"

[[rule.threat]]
framework = "MITRE ATT&CK"

[[rule.threat.technique]]
id = "T1595"
name = "Active Scanning"
reference = "https://attack.mitre.org/techniques/T1595/"

[[rule.threat.technique.subtechnique]]
id = "T1595.002"
name = "Vulnerability Scanning"
reference = "https://attack.mitre.org/techniques/T1595/002/"

[[rule.threat.technique.subtechnique]]
id = "T1595.003"
name = "Wordlist Scanning"
reference = "https://attack.mitre.org/techniques/T1595/003/"

[rule.threat.tactic]
id = "TA0043"
name = "Reconnaissance"
reference = "https://attack.mitre.org/tactics/TA0043/"