Detection rules › Sigma

Registry Hide Function from User

Severity
medium
Author
frack113
Source
upstream

Detects registry modifications that hide internal tools or functions from the user (malware like Agent Tesla, Hermetic Wiper uses this technique)

MITRE ATT&CK coverage

TacticTechniques
PersistenceT1112 Modify Registry
Defense EvasionT1112 Modify Registry

Event coverage

ProviderEvent IDTitle
Sysmon13RegistryEvent (Value Set)

Stages and Predicates

Stage 1: 1 of selection_set_1

or:
TargetObject|endswith: 'SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\HideClock'
TargetObject|endswith: 'SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\HideSCAHealth'
TargetObject|endswith: 'SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\HideSCANetwork'
TargetObject|endswith: 'SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\HideSCAPower'
TargetObject|endswith: 'SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\HideSCAVolume'
Details: 'DWORD (0x00000001)'

Stage 2: 1 of selection_set_0

or:
TargetObject|endswith: 'SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowCompColor'
TargetObject|endswith: 'SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowInfoTip'
Details: 'DWORD (0x00000000)'

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

FieldKindValues
Detailseq
  • DWORD (0x00000000) corpus 38 (sigma 38)
  • DWORD (0x00000001) corpus 37 (sigma 37)
TargetObjectends_with
  • SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowCompColor
  • SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowInfoTip
  • SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\HideClock
  • SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\HideSCAHealth
  • SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\HideSCANetwork
  • SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\HideSCAPower
  • SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\HideSCAVolume