Detection rules › Sigma

HackTool - RemoteKrbRelay SMB Relay Secrets Dump Module Indicators

Severity
high
Author
Nasreddine Bencherchali (Nextron Systems)
Source
upstream

Detects the creation of file with specific names used by RemoteKrbRelay SMB Relay attack module.

MITRE ATT&CK coverage

TacticTechniques
Command & ControlT1219.002 Remote Access Tools: Remote Desktop Software

Event coverage

ProviderEvent IDTitle
Sysmon11FileCreate

Stages and Predicates

Stage 1: selection

or:
TargetFilename|endswith: ':\windows\temp\sam.tmp'
TargetFilename|endswith: ':\windows\temp\sec.tmp'
TargetFilename|endswith: ':\windows\temp\sys.tmp'

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
TargetFilenameends_with
  • :\windows\temp\sam.tmp
  • :\windows\temp\sec.tmp
  • :\windows\temp\sys.tmp