Potential Execution via Foxmail Exploitation

[rule]
description = """
Identifies the Foxmail client process spawning a child process with argument pointing to the Foxmail temp directory.
This may indicate the successful exploitation of a Foxmail vulnerability for initial access and execution via a
malicious email that automatically double clicks a hidden executable attachment.
"""
id = "0f00dd3b-3a41-45d3-afb6-cdf874f28d8c"
license = "Elastic License v2"
name = "Potential Execution via Foxmail Exploitation"
os_list = ["windows"]
reference = ["https://mp.weixin.qq.com/s/F8hNyESBdKhwXkQPgtGpew"]
version = "1.0.3"

query = '''
process where event.action == "start" and
 process.parent.name : "Foxmail.exe" and process.args : "?:\\Users\\*\\AppData\\Roaming\\Foxmail*" and
 not process.executable : ("?:\\Program Files\\*.exe", "?:\\Program Files (x86)\\*.exe") and
 not (process.code_signature.subject_name in ("Zhuhai Kingsoft Office Software Co., Ltd.", "Tencent Technology(Shenzhen) Company Limited") and
     process.code_signature.trusted == true)
'''

min_endpoint_version = "7.16.0"
[[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 = "T1189"
name = "Drive-by Compromise"
reference = "https://attack.mitre.org/techniques/T1189/"


[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/"

[internal]
min_endpoint_version = "7.16.0"