Back-porting Version Trimming (#3681)

rules/linux/command_and_control_linux_chisel_server_activity.toml

@@ -2,9 +2,7 @@
 creation_date = "2023/08/23"
 integration = ["endpoint"]
 maturity = "production"
-min_stack_comments = "New fields added: required_fields, related_integrations, setup"
-min_stack_version = "8.3.0"
-updated_date = "2024/03/08"
+updated_date = "2024/05/21"
 
 [transform]
 [[transform.osquery]]
@@ -31,14 +29,15 @@ query = "SELECT pid, username, name FROM processes p JOIN users u ON u.uid = p.u
 label = "Osquery - Retrieve Process Info"
 query = "SELECT name, cmdline, parent, path, uid FROM processes"
 
+
 [rule]
 author = ["Elastic"]
 description = """
-This rule monitors for common command line flags leveraged by the Chisel server utility followed by a received connection
-within a timespan of 1 minute. Chisel is a command-line utility used for creating and managing TCP and UDP tunnels,
-enabling port forwarding and secure communication between machines. Attackers can abuse the Chisel utility to establish
-covert communication channels, bypass network restrictions, and carry out malicious activities by creating tunnels that
-allow unauthorized access to internal systems.
+This rule monitors for common command line flags leveraged by the Chisel server utility followed by a received
+connection within a timespan of 1 minute. Chisel is a command-line utility used for creating and managing TCP and UDP
+tunnels, enabling port forwarding and secure communication between machines. Attackers can abuse the Chisel utility to
+establish covert communication channels, bypass network restrictions, and carry out malicious activities by creating
+tunnels that allow unauthorized access to internal systems.
 """
 from = "now-9m"
 index = ["logs-endpoint.events.*"]
@@ -108,8 +107,8 @@ This rule looks for a sequence of command line arguments that are consistent wit
 """
 references = [
     "https://blog.bitsadmin.com/living-off-the-foreign-land-windows-as-offensive-platform",
-    "https://book.hacktricks.xyz/generic-methodologies-and-resources/tunneling-and-port-forwarding"
-    ]
+    "https://book.hacktricks.xyz/generic-methodologies-and-resources/tunneling-and-port-forwarding",
+]
 risk_score = 47
 rule_id = "ac8805f6-1e08-406c-962e-3937057fa86f"
 setup = """## Setup
@@ -139,13 +138,14 @@ For more details on Elastic Defend refer to the [helper guide](https://www.elast
 """
 severity = "medium"
 tags = [
-        "Domain: Endpoint",
-        "OS: Linux",
-        "Use Case: Threat Detection",
-        "Tactic: Command and Control",
-        "Data Source: Elastic Defend"
-        ]
+    "Domain: Endpoint",
+    "OS: Linux",
+    "Use Case: Threat Detection",
+    "Tactic: Command and Control",
+    "Data Source: Elastic Defend",
+]
 type = "eql"
+
 query = '''
 sequence by host.id, process.entity_id with maxspan=1m
   [process where host.os.type == "linux" and event.type == "start" and event.action == "exec" and 
@@ -158,15 +158,17 @@ sequence by host.id, process.entity_id with maxspan=1m
      "ftp", "socat", "curl", "wget", "dpkg", "docker", "dockerd", "yum", "apt", "rpm", "dnf", "ssh", "sshd", "hugo")]
 '''
 
+
 [[rule.threat]]
 framework = "MITRE ATT&CK"
-
 [[rule.threat.technique]]
 id = "T1572"
 name = "Protocol Tunneling"
 reference = "https://attack.mitre.org/techniques/T1572/"
 
+
 [rule.threat.tactic]
 id = "TA0011"
 name = "Command and Control"
 reference = "https://attack.mitre.org/tactics/TA0011/"
+