Detection rules › Sigma
HackTool - RemoteKrbRelay SMB Relay Secrets Dump Module Indicators
Detects the creation of file with specific names used by RemoteKrbRelay SMB Relay attack module.
Known false positives
- Unlikely
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Command & Control |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 11: FileCreate |
Rule body
title: HackTool - RemoteKrbRelay SMB Relay Secrets Dump Module Indicators
id: 3ab79e90-9fab-4cdf-a7b2-6522bc742adb
status: test
description: Detects the creation of file with specific names used by RemoteKrbRelay SMB Relay attack module.
references:
- https://github.com/CICADA8-Research/RemoteKrbRelay/blob/19ec76ba7aa50c2722b23359bc4541c0a9b2611c/Exploit/RemoteKrbRelay/Relay/Attacks/RemoteRegistry.cs#L31-L40
author: Nasreddine Bencherchali (Nextron Systems)
date: 2024-06-27
tags:
- attack.command-and-control
- attack.t1219.002
logsource:
product: windows
category: file_event
detection:
selection:
TargetFilename|endswith:
- ':\windows\temp\sam.tmp'
- ':\windows\temp\sec.tmp'
- ':\windows\temp\sys.tmp'
condition: selection
falsepositives:
- Unlikely
level: high
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
TargetFilename|endswith:
- ':\windows\temp\sam.tmp'
- ':\windows\temp\sec.tmp'
- ':\windows\temp\sys.tmp'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
TargetFilename | ends_with |
| field:"TargetFilename" kind:ends_with |