ID | Technique | Tactic |
---|---|---|
T1574.002 | DLL Side-Loading | Defense Evasion |
T1574 | Hijack Execution Flow | Persistence |
Detection: Windows Known GraphicalProton Loaded Modules
Description
The following analytic detects the loading of DLL modules associated with the GraphicalProton backdoor implant, commonly used by SVR in targeted attacks. It leverages Sysmon EventCode 7 to identify specific DLLs loaded by processes. This activity is significant as it may indicate the presence of a sophisticated backdoor, warranting immediate investigation. If confirmed malicious, the attacker could gain persistent access to the compromised host, potentially leading to further exploitation and data exfiltration.
Search
1`sysmon` EventCode=7 ImageLoaded IN ("*\\AclNumsInvertHost.dll", "*\\ModeBitmapNumericAnimate.dll", "*\\UnregisterAncestorAppendAuto.dll", "*\\DeregisterSeekUsers.dll", "*\\ScrollbarHandleGet.dll", "*\\PerformanceCaptionApi.dll", "*\\WowIcmpRemoveReg.dll", "*\\BlendMonitorStringBuild.dll", "*\\HandleFrequencyAll.dll", "*\\HardSwapColor.dll", "*\\LengthInMemoryActivate.dll", "*\\ParametersNamesPopup.dll", "*\\ModeFolderSignMove.dll", "*\\ChildPaletteConnected.dll", "*\\AddressResourcesSpec.dll")
2| stats count min(_time) as firstTime max(_time) as lastTime by Image ImageLoaded process_name dest EventCode Signed ProcessId Hashes IMPHASH
3| `security_content_ctime(firstTime)`
4| `security_content_ctime(lastTime)`
5| `windows_known_graphicalproton_loaded_modules_filter`
Data Source
Name | Platform | Sourcetype | Source | Supported App |
---|---|---|---|---|
Sysmon EventID 7 | Windows | 'xmlwineventlog' |
'XmlWinEventLog:Microsoft-Windows-Sysmon/Operational' |
N/A |
Macros Used
Name | Value |
---|---|
security_content_ctime | convert timeformat="%Y-%m-%dT%H:%M:%S" ctime($field$) |
windows_known_graphicalproton_loaded_modules_filter | search * |
windows_known_graphicalproton_loaded_modules_filter
is an empty macro by default. It allows the user to filter out any results (false positives) without editing the SPL.
Annotations
Default Configuration
This detection is configured by default in Splunk Enterprise Security to run with the following settings:
Setting | Value |
---|---|
Disabled | true |
Cron Schedule | 0 * * * * |
Earliest Time | -70m@m |
Latest Time | -10m@m |
Schedule Window | auto |
Creates Risk Event | True |
Implementation
To successfully implement this search, you need to be ingesting logs with the process name and imageloaded executions from your endpoints. If you are using Sysmon, you must have at least version 6.0.4 of the Sysmon TA.
Known False Positives
unknown
Associated Analytic Story
Risk Based Analytics (RBA)
Risk Message | Risk Score | Impact | Confidence |
---|---|---|---|
Windows Known GraphicalProton backdoor Loaded Modules on $dest$. | 36 | 60 | 60 |
References
Detection Testing
Test Type | Status | Dataset | Source | Sourcetype |
---|---|---|---|---|
Validation | ✅ Passing | N/A | N/A | N/A |
Unit | ✅ Passing | Dataset | XmlWinEventLog:Microsoft-Windows-Sysmon/Operational |
xmlwineventlog |
Integration | ✅ Passing | Dataset | XmlWinEventLog:Microsoft-Windows-Sysmon/Operational |
xmlwineventlog |
Replay any dataset to Splunk Enterprise by using our replay.py
tool or the UI.
Alternatively you can replay a dataset into a Splunk Attack Range
Source: GitHub | Version: 2