Python Library Load and Delete

[rule]
description = """
Detects Python loading a library from a user's home directory followed by immediate deletion. This technique is used by
malware to execute code while removing forensic evidence.
"""
id = "76a1f901-4495-4cbd-a35a-7ff8d116602b"
license = "Elastic License v2"
name = "Python Library Load and Delete"
os_list = ["macos"]
reference = [
    "https://unit42.paloaltonetworks.com/slow-pisces-new-custom-malware/",
    "https://slowmist.medium.com/cryptocurrency-apt-intelligence-unveiling-lazarus-groups-intrusion-techniques-a1a6efda7d34",
]
version = "1.0.7"

query = '''
sequence by process.entity_id with maxspan=10s
[library where event.action == "load" and dll.path like~ "/Users/*" and process.name like~ "python*" and
  not dll.name : "*.so"] as event0
[file where event.action == "deletion" and startswith~(file.path, event0.dll.path)]
'''

min_endpoint_version = "8.16.0"
optional_actions = []
[[actions]]
action = "kill_process"
field = "Effective_process.entity_id"
state = 0

[[actions]]
action = "kill_process"
field = "process.entity_id"
state = 0

[[threat]]
framework = "MITRE ATT&CK"
[[threat.technique]]
id = "T1059"
name = "Command and Scripting Interpreter"
reference = "https://attack.mitre.org/techniques/T1059/"
[[threat.technique.subtechnique]]
id = "T1059.006"
name = "Python"
reference = "https://attack.mitre.org/techniques/T1059/006/"



[threat.tactic]
id = "TA0002"
name = "Execution"
reference = "https://attack.mitre.org/tactics/TA0002/"
[[threat]]
framework = "MITRE ATT&CK"
[[threat.technique]]
id = "T1070"
name = "Indicator Removal"
reference = "https://attack.mitre.org/techniques/T1070/"
[[threat.technique.subtechnique]]
id = "T1070.004"
name = "File Deletion"
reference = "https://attack.mitre.org/techniques/T1070/004/"



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

[internal]
min_endpoint_version = "8.16.0"