Potential CVE-2025-33053 Exploitation

[rule]
description = """
Identifies a suspicious Diagnostics Utility for Internet Explorer child process. This may indicate the successful
exploitation of the vulnerability CVE-2025-33053.
"""
id = "023ef149-c929-4f34-8384-20c0c0b9c2f7"
license = "Elastic License v2"
name = "Potential CVE-2025-33053 Exploitation"
os_list = ["windows"]
reference = [
    "https://research.checkpoint.com/2025/stealth-falcon-zero-day/",
    "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-33053",
]
version = "1.0.2"

query = '''
process where event.action == "start" and
(
 (process.name : "iediagcmd.exe" and process.working_directory : "\\\\*") or
 (process.parent.executable : "C:\\Program Files\\Internet Explorer\\iediagcmd.exe" and
  process.name : ("route.exe", "netsh.exe", "ipconfig.exe", "dxdiag.exe", "conhost.exe", "makecab.exe") and
  process.executable != null and
  not process.executable : ("?:\\Windows\\System32\\route.exe",
                           "?:\\Windows\\System32\\netsh.exe",
                           "?:\\Windows\\System32\\ipconfig.exe",
                           "?:\\Windows\\System32\\dxdiag.exe",
                           "?:\\Windows\\System32\\conhost.exe",
                           "?:\\Windows\\System32\\makecab.exe"))
)
'''

min_endpoint_version = "7.15.0"
optional_actions = []
[[actions]]
action = "kill_process"
field = "process.entity_id"
state = 0
tree = true

[[threat]]
framework = "MITRE ATT&CK"
[[threat.technique]]
id = "T1566"
name = "Phishing"
reference = "https://attack.mitre.org/techniques/T1566/"
[[threat.technique.subtechnique]]
id = "T1566.001"
name = "Spearphishing Attachment"
reference = "https://attack.mitre.org/techniques/T1566/001/"



[threat.tactic]
id = "TA0001"
name = "Initial Access"
reference = "https://attack.mitre.org/tactics/TA0001/"
[[threat]]
framework = "MITRE ATT&CK"
[[threat.technique]]
id = "T1203"
name = "Exploitation for Client Execution"
reference = "https://attack.mitre.org/techniques/T1203/"


[threat.tactic]
id = "TA0002"
name = "Execution"
reference = "https://attack.mitre.org/tactics/TA0002/"
[[threat]]
framework = "MITRE ATT&CK"
[[threat.technique]]
id = "T1218"
name = "System Binary Proxy Execution"
reference = "https://attack.mitre.org/techniques/T1218/"


[threat.tactic]
id = "TA0005"
name = "Defense Evasion"
reference = "https://attack.mitre.org/tactics/TA0005/"

[internal]
min_endpoint_version = "7.15.0"