Sigma rule: DLL Names Used By SVR For GraphicalProton Backdoor

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-3d11fa223a8b, updated 2023-12-18T00:00:00.000Z.

Rule

Title
DLL Names Used By SVR For GraphicalProton Backdoor
Status
test
Level
medium
Author
CISA
Date
2023-12-18
File
rules-emerging-threats/2023/TA/Cozy-Bear/image_load_apt_cozy_bear_graphical_proton_dlls.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Hunts known SVR-specific DLL names.

Log source

product
windows
category
image_load

Detection

selection:
    ImageLoaded|endswith:
        - '\AclNumsInvertHost.dll'
        - '\AddressResourcesSpec.dll'
        - '\BlendMonitorStringBuild.dll'
        - '\ChildPaletteConnected.dll'
        - '\DeregisterSeekUsers.dll'
        - '\HandleFrequencyAll.dll'
        - '\HardSwapColor.dll'
        - '\LengthInMemoryActivate.dll'
        - '\ModeBitmapNumericAnimate.dll'
        - '\ModeFolderSignMove.dll'
        - '\ParametersNamesPopup.dll'
        - '\PerformanceCaptionApi.dll'
        - '\ScrollbarHandleGet.dll'
        - '\UnregisterAncestorAppendAuto.dll'
        - '\WowIcmpRemoveReg.dll'
condition: selection

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.persistence
  • attack.privilege-escalation
  • attack.execution
  • attack.stealth
  • attack.t1574.001
  • detection.emerging-threats

MITRE ATT&CK ids this rule names

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2023/TA/Cozy-Bear/image_load_apt_cozy_bear_graphical_proton_dlls.yml

Sources and licences

  • SigmaHQ

    "DLL Names Used By SVR For GraphicalProton Backdoor" by CISA (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2023/TA/Cozy-Bear/image_load_apt_cozy_bear_graphical_proton_dlls.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: DLL Names Used By SVR For GraphicalProton Backdoor",
entity page, dataset version ref-3d11fa223a8b, updated 2023-12-18T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/e64c8ef3-9f98-40c8-b71e-96110991cb4c (accessed 2026-11-03).
Underlying source: SigmaHQ rule e64c8ef3-9f98-40c8-b71e-96110991cb4c, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.