Detection rules › Sigma
Winlogon process contact to C2 - Blacklotus (Sysmon)
Detects Blacklotus HTTP downloader injection into winlogon.exe process.
Known false positives
- None
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Discovery |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 1: Process creation |
Rule body
title: Winlogon process contact to C2 - Blacklotus (Sysmon)
description: Detects Blacklotus HTTP downloader injection into winlogon.exe process.
requirements: SYSMON configuration from SwiftOnSecurity needs to be adapted in order to audit winlogon.exe connections.
references:
- https://www.microsoft.com/en-us/security/blog/2023/04/11/guidance-for-investigating-attacks-using-cve-2022-21894-the-blacklotus-campaign/
tags:
- attack.command_and_control
- attack.discovery
- attack.t1016 # System Network Configuration Discovery
author: mdecrevoisier
status: experimental
logsource:
product: windows
category: process_creation
detection:
selection:
Image|endswith: '\winlogon.exe'
DestinationPort: 80
condition: selection
falsepositives:
- None
level: high
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
Image|endswith: '\winlogon.exe'
DestinationPort: 80
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
DestinationPort | eq |
| field:"DestinationPort" kind:eq value:"80" |
Image | ends_with |
| field:"Image" kind:ends_with value:"\winlogon.exe" |