Detection rules › Sigma

Enable Remote Connection Between Anonymous Computer - AllowAnonymousCallback

Severity
medium
Author
X__Junior (Nextron Systems)
Source
upstream

Detects enabling of the "AllowAnonymousCallback" registry value, which allows a remote connection between computers that do not have a trust relationship.

MITRE ATT&CK coverage

TacticTechniques
Defense EvasionT1562.001 Impair Defenses: Disable or Modify Tools

Event coverage

ProviderEvent IDTitle
Sysmon13RegistryEvent (Value Set)

Stages and Predicates

Stage 1: selection

Details: 'DWORD (0x00000001)'
TargetObject|contains: '\Microsoft\WBEM\CIMOM\AllowAnonymousCallback'

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 (0x00000001) corpus 37 (sigma 37)
TargetObjectmatch
  • \Microsoft\WBEM\CIMOM\AllowAnonymousCallback