mirror of
https://github.com/splunk/security_content
synced 2026-06-08 17:32:49 +00:00
Branch was auto-updated.
This commit is contained in:
@@ -4,7 +4,8 @@ version: 2
|
||||
date: '2021-09-16'
|
||||
author: Michael Haag, Splunk
|
||||
type: Hunting
|
||||
datamodel: []
|
||||
datamodel:
|
||||
- Endpoint
|
||||
description: The following analytic identifies the usage of `rclone.exe`, renamed,
|
||||
being used to exfiltrate data to a remote destination. RClone has been used by multiple
|
||||
ransomware groups to exfiltrate data. In many instances, it will be downloaded from
|
||||
|
||||
@@ -4,7 +4,8 @@ version: 4
|
||||
date: '2020-11-18'
|
||||
author: David Dorsey, Patrick Bareiss, Splunk
|
||||
type: TTP
|
||||
datamodel: []
|
||||
datamodel:
|
||||
- Endpoint
|
||||
description: The search looks for modifications to registry keys that control the
|
||||
enforcement of Windows User Account Control (UAC).
|
||||
search: '| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time)
|
||||
|
||||
@@ -4,7 +4,8 @@ version: 3
|
||||
date: '2020-01-28'
|
||||
author: Bhavin Patel, Teoderick Contreras, Splunk
|
||||
type: TTP
|
||||
datamodel: []
|
||||
datamodel:
|
||||
- Endpoint
|
||||
description: This search looks for registry activity associated with modifications
|
||||
to the registry key `HKLM\SYSTEM\CurrentControlSet\Control\Print\Monitors`. In this
|
||||
scenario, an attacker can load an arbitrary .dll into the print-monitor registry
|
||||
|
||||
@@ -1,10 +1,12 @@
|
||||
name: Outbound Network Connection from Java Using Default Ports
|
||||
id: d2c14d28-5c47-11ec-9892-acde48001122
|
||||
version: 1
|
||||
date: '2021-12-13'
|
||||
author: Mauricio Velazco, Splunk
|
||||
version: 2
|
||||
date: '2022-06-28'
|
||||
author: Mauricio Velazco, Lou Stella, Splunk
|
||||
type: TTP
|
||||
datamodel: []
|
||||
datamodel:
|
||||
- Endpoint
|
||||
- Network_Traffic
|
||||
description: A required step while exploiting the CVE-2021-44228-Log4j vulnerability
|
||||
is that the victim server will perform outbound connections to attacker-controlled
|
||||
infrastructure. This is required as part of the JNDI lookup as well as for retrieving
|
||||
@@ -12,16 +14,7 @@ description: A required step while exploiting the CVE-2021-44228-Log4j vulnerabi
|
||||
reaching out to default ports used by the LDAP and RMI protocols. This behavior
|
||||
could represent successfull exploitation. Note that adversaries can easily decide
|
||||
to use arbitrary ports for these protocols and potentially bypass this detection.
|
||||
search: '| tstats `security_content_summariesonly` count FROM datamodel=Endpoint.Processes
|
||||
where (Processes.process_name="java.exe" OR Processes.process_name=javaw.exe OR
|
||||
Processes.process_name=javaw.exe) by _time Processes.process_guid Processes.process_name
|
||||
Processes.dest Processes.process_path Processes.process Processes.parent_process_name
|
||||
| `drop_dm_object_name(Processes)` | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)`
|
||||
| join process_guid [| tstats `security_content_summariesonly` count FROM datamodel=Endpoint.Ports
|
||||
where (Ports.dest_port= 389 OR Ports.dest_port= 636 OR Ports.dest_port = 1389 OR
|
||||
Ports.dest_port = 1099 ) by Ports.process_guid Ports.dest Ports.dest_port| `drop_dm_object_name(Ports)`
|
||||
| rename dest as connection_to_CNC] | table _time dest parent_process_name process_name
|
||||
process_path process connection_to_CNC dest_port | `outbound_network_connection_from_java_using_default_ports_filter`'
|
||||
search: '| tstats `security_content_summariesonly` count FROM datamodel=Endpoint.Processes where (Processes.process_name="java.exe" OR Processes.process_name=javaw.exe OR Processes.process_name=javaw.exe) by _time Processes.process_id Processes.process_name Processes.dest Processes.process_path Processes.process Processes.parent_process_name | `drop_dm_object_name(Processes)` | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` | join process_id [| tstats `security_content_summariesonly` count FROM datamodel=Network_Traffic.All_Traffic where (All_Traffic.dest_port= 389 OR All_Traffic.dest_port= 636 OR All_Traffic.dest_port = 1389 OR All_Traffic.dest_port = 1099 ) by All_Traffic.process_id All_Traffic.dest All_Traffic.dest_port | `drop_dm_object_name(All_Traffic)` | rename dest as connection_to_CNC] | table _time dest parent_process_name process_name process_path process connection_to_CNC dest_port| `outbound_network_connection_from_java_using_default_ports_filter`'
|
||||
how_to_implement: To successfully implement this search you need to be ingesting information
|
||||
on process that include the name of the process responsible for the changes from
|
||||
your endpoints into the `Endpoint` datamodel in the `Processes` node.
|
||||
@@ -59,15 +52,15 @@ tags:
|
||||
- Splunk Cloud
|
||||
required_fields:
|
||||
- _time
|
||||
- Processes.process_guid
|
||||
- Processes.process_id
|
||||
- Processes.process_name
|
||||
- Processes.dest
|
||||
- Processes.process_path
|
||||
- Processes.process
|
||||
- Processes.parent_process_name
|
||||
- Ports.process_guid
|
||||
- Ports.dest
|
||||
- Ports.dest_port
|
||||
- All_Traffic.process_id
|
||||
- All_Traffic.dest
|
||||
- All_Traffic.dest_port
|
||||
risk_score: 54
|
||||
security_domain: endpoint
|
||||
asset_type: Endpoint
|
||||
|
||||
@@ -4,7 +4,8 @@ version: 4
|
||||
date: '2020-01-28'
|
||||
author: Bhavin Patel, Patrick Bareiss, Teoderick Contreras, Splunk
|
||||
type: TTP
|
||||
datamodel: []
|
||||
datamodel:
|
||||
- Endpoint
|
||||
description: This search looks for registry activity associated with application compatibility
|
||||
shims, which can be leveraged by attackers for various nefarious purposes.
|
||||
search: '| tstats `security_content_summariesonly` count FROM datamodel=Endpoint.Registry
|
||||
|
||||
@@ -4,7 +4,8 @@ version: 5
|
||||
date: '2022-01-26'
|
||||
author: David Dorsey, Teoderick Contreras, Splunk
|
||||
type: TTP
|
||||
datamodel: []
|
||||
datamodel:
|
||||
- Endpoint
|
||||
description: This search looks for modifications to registry keys that can be used
|
||||
to elevate privileges. The registry keys under "Image File Execution Options" are
|
||||
used to intercept calls to an executable and can be used to attach malicious binaries
|
||||
|
||||
@@ -4,7 +4,8 @@ version: 1
|
||||
date: '2020-11-06'
|
||||
author: Rod Soto, Jose Hernandez, Splunk
|
||||
type: TTP
|
||||
datamodel: []
|
||||
datamodel:
|
||||
- Endpoint
|
||||
description: The search looks for files that contain the key word *Ryuk* under any
|
||||
folder in the C drive, which is consistent with Ryuk propagation.
|
||||
search: '| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time)
|
||||
|
||||
@@ -4,7 +4,8 @@ version: 3
|
||||
date: '2020-12-08'
|
||||
author: David Dorsey, Splunk
|
||||
type: TTP
|
||||
datamodel: []
|
||||
datamodel:
|
||||
- Endpoint
|
||||
description: This search looks for shim database files being written to default directories.
|
||||
The sdbinst.exe application is used to install shim database files (.sdb). According
|
||||
to Microsoft, a shim is a small library that transparently intercepts an API, changes
|
||||
|
||||
@@ -4,7 +4,8 @@ version: 4
|
||||
date: '2020-07-22'
|
||||
author: Rico Valdez, Splunk
|
||||
type: TTP
|
||||
datamodel: []
|
||||
datamodel:
|
||||
- Endpoint
|
||||
description: This search detects writes to the recycle bin by a process other than
|
||||
explorer.exe.
|
||||
search: '| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time)
|
||||
|
||||
+2
-1
@@ -4,7 +4,8 @@ version: 1
|
||||
date: '2022-03-28'
|
||||
author: Teoderick Contreras, Splunk
|
||||
type: Anomaly
|
||||
datamodel: []
|
||||
datamodel:
|
||||
- Endpoint
|
||||
description: This analytic is to detect deletion of registry with suspicious process file path. This technique was seen in Double Zero wiper malware
|
||||
where it will delete all the subkey in HKLM, HKCU and HKU registry hive as part of its destructive payload to the targeted hosts. This anomaly detections
|
||||
can catch possible malware or advesaries deleting registry as part of defense evasion or even payload impact but can also catch for third party application
|
||||
|
||||
@@ -4,7 +4,8 @@ version: 1
|
||||
date: '2020-11-06'
|
||||
author: Rod Soto, Jose Hernandez, Splunk
|
||||
type: TTP
|
||||
datamodel: []
|
||||
datamodel:
|
||||
- Endpoint
|
||||
description: The search looks for a Windows Security Account Manager (SAM) was stopped
|
||||
via command-line. This is consistent with Ryuk infections across a fleet of endpoints.
|
||||
search: '| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time)
|
||||
|
||||
Reference in New Issue
Block a user