Detection rules › Elastic
Potential Elastic Tampering via PendingFileRename
Identifies attempts to delete Elastic protected resources via PendingFileRename operation. Malware may abuse this feature to delete Elastic endpoint after reboot.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Persistence | |
| Defense Impairment |
Rule body
[rule]
description = """
Identifies attempts to delete Elastic protected resources via PendingFileRename operation. Malware may abuse this
feature to delete Elastic endpoint after reboot.
"""
id = "faf5018c-2cf0-4334-b89f-db197d95ee16"
license = "Elastic License v2"
name = "Potential Elastic Tampering via PendingFileRename"
os_list = ["windows"]
reference = [
"https://qtechbabble.wordpress.com/2020/06/26/use-pendingfilerenameoperations-registry-key-to-automatically-delete-a-file-on-reboot/",
"https://github.com/rad9800/FileRenameJunctionsEDRDisable",
"https://github.com/duhirsch/MoveEdr",
]
version = "1.0.3"
query = '''
registry where event.action == "modification" and
registry.value == "PendingFileRenameOperations" and
registry.data.strings : (
"*Program Files\\Elastic\\*",
"*Program Files//Elastic//*",
"*Program Files\\Elastic",
"*Program Files//Elastic",
"*elastic-endpoint-driver.sys*",
"*ElasticElam.sys*"
)
'''
min_endpoint_version = "8.1.0"
[[actions]]
action = "kill_process"
field = "process.entity_id"
state = 0
[[optional_actions]]
action = "rollback"
field = "process.entity_id"
state = 0
[[threat]]
framework = "MITRE ATT&CK"
[[threat.technique]]
id = "T1112"
name = "Modify Registry"
reference = "https://attack.mitre.org/techniques/T1112/"
[[threat.technique]]
id = "T1562"
name = "Impair Defenses"
reference = "https://attack.mitre.org/techniques/T1562/"
[[threat.technique.subtechnique]]
id = "T1562.001"
name = "Disable or Modify Tools"
reference = "https://attack.mitre.org/techniques/T1562/001/"
[threat.tactic]
id = "TA0005"
name = "Defense Evasion"
reference = "https://attack.mitre.org/tactics/TA0005/"
[internal]
min_endpoint_version = "8.1.0"
Stages and Predicates
Stage 1: registry
registry where event.action == "modification" and
registry.value == "PendingFileRenameOperations" and
registry.data.strings : (
"*Program Files\\Elastic\\*",
"*Program Files//Elastic//*",
"*Program Files\\Elastic",
"*Program Files//Elastic",
"*elastic-endpoint-driver.sys*",
"*ElasticElam.sys*"
)
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
event.action | eq |
| field:"EventType" kind:eq value:"modification" |
registry.data.strings | wildcard |
| field:"Details" kind:wildcard |
registry.value | eq |
| field:"registry_value_name" kind:eq value:"PendingFileRenameOperations" |