Script Execution from WebDav

[rule]
description = """
Identifies attempt to execute Windows scripts from a remote WebDav Share. Adversaries may abuse this method to evade
dropping malicious files to victim file system.
"""
id = "4bdd5646-f7b2-4e1d-962d-fd0f591f8f87"
license = "Elastic License v2"
name = "Script Execution from WebDav"
os_list = ["windows"]
version = "1.0.4"

query = '''
process where event.action == "start" and
 process.name : ("cmd.exe", "powershell.exe", "conhost.exe", "replace.exe", "wscript.exe", "cscript.exe", "mshta.exe", "regsvr32.exe") and
 (process.command_line : ("*@SSL\\*", "*\\webdav\\*", "*\\DavWWWRoot\\*") or process.args : ("\\\\*.*@8080\\*", "\\\\*.*@80\\*", "\\\\*.*@8443\\*", "\\\\*.*@443\\*")) and
 not (process.name : "cmd.exe" and process.args : "\\\\?\\UNC\\*.sharepoint.com@SSL\\DavWWWRoot\\*")
'''

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

[[optional_actions]]
action = "rollback"
field = "process.entity_id"
state = 0

[[threat]]
framework = "MITRE ATT&CK"
[[threat.technique]]
id = "T1204"
name = "User Execution"
reference = "https://attack.mitre.org/techniques/T1204/"
[[threat.technique.subtechnique]]
id = "T1204.002"
name = "Malicious File"
reference = "https://attack.mitre.org/techniques/T1204/002/"



[threat.tactic]
id = "TA0002"
name = "Execution"
reference = "https://attack.mitre.org/tactics/TA0002/"
[[threat]]
framework = "MITRE ATT&CK"
[[threat.technique]]
id = "T1021"
name = "Remote Services"
reference = "https://attack.mitre.org/techniques/T1021/"
[[threat.technique.subtechnique]]
id = "T1021.002"
name = "SMB/Windows Admin Shares"
reference = "https://attack.mitre.org/techniques/T1021/002/"



[threat.tactic]
id = "TA0008"
name = "Lateral Movement"
reference = "https://attack.mitre.org/tactics/TA0008/"

[internal]
min_endpoint_version = "7.15.0"