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[Rule Tuning] Shared Object Created or Changed by Previously Unknown … #5469

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Merged
Aegrah merged 3 commits into from
Dec 19, 2025
Merged

[Rule Tuning] Shared Object Created or Changed by Previously Unknown … #5469

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f55d141
[Rule Tuning] Shared Object Created or Changed by Previously Unknown …
Aegrah Dec 16, 2025
a06ebef
Update rules/linux/persistence_shared_object_creation.toml
Samirbous Dec 18, 2025
fe56484
Merge branch 'main' into rule-tuning-so-creation
Aegrah Dec 19, 2025
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8 changes: 4 additions & 4 deletions rules/linux/persistence_shared_object_creation.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,7 @@
creation_date = "2023/06/09"
integration = ["endpoint"]
maturity = "production"
updated_date = "2025/03/11"
updated_date = "2025/12/16"

[transform]
[[transform.osquery]]
Expand Down Expand Up @@ -54,7 +54,7 @@ malware to persist on the system, evade detection, and potentially compromise th
affected system and its data.
"""
from = "now-9m"
index = ["logs-endpoint.events.*", "endgame-*"]
index = ["logs-endpoint.events.file*", "endgame-*"]
language = "kuery"
license = "Elastic License v2"
name = "Shared Object Created or Changed by Previously Unknown Process"
Expand Down Expand Up @@ -161,7 +161,7 @@ tags = [
timestamp_override = "event.ingested"
type = "new_terms"
query = '''
host.os.type:"linux" and event.action:("creation" or "file_create_event" or "file_rename_event" or "rename" or "file_write_event") and
event.category:file and host.os.type:"linux" and event.action:("creation" or "file_create_event" or "file_rename_event" or "rename") and
(file.extension:"so" or file.name:*.so.*) and
file.path:(
/dev/shm/* or /usr/lib/* or /usr/lib64/* or /usr/local/lib/* or /usr/local/lib64/* or /lib/x86_64-linux-gnu/* or
Expand Down Expand Up @@ -202,4 +202,4 @@ value = ["file.path", "process.executable"]

[[rule.new_terms.history_window_start]]
field = "history_window_start"
value = "now-10d"
value = "now-5d"
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