Detection rules › Sigma
HackTool - SharpLdapWhoami Execution
Detects SharpLdapWhoami, a whoami alternative that queries the LDAP service on a domain controller
Known false positives
- Programs that use the same command line flags
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Discovery |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 1: Process creation |
Rule body
title: HackTool - SharpLdapWhoami Execution
id: d9367cbb-c2e0-47ce-bdc0-128cb6da898d
status: test
description: Detects SharpLdapWhoami, a whoami alternative that queries the LDAP service on a domain controller
references:
- https://github.com/bugch3ck/SharpLdapWhoami
author: Florian Roth (Nextron Systems)
date: 2022-08-29
modified: 2023-02-04
tags:
- attack.discovery
- attack.t1033
- car.2016-03-001
logsource:
category: process_creation
product: windows
detection:
selection_name:
Image|endswith: '\SharpLdapWhoami.exe'
selection_pe: # in case the file has been renamed after compilation
- OriginalFileName|contains: 'SharpLdapWhoami'
- Product: 'SharpLdapWhoami'
selection_flags1:
CommandLine|endswith:
- ' /method:ntlm'
- ' /method:kerb'
- ' /method:nego'
- ' /m:nego'
- ' /m:ntlm'
- ' /m:kerb'
condition: 1 of selection*
falsepositives:
- Programs that use the same command line flags
level: high
Stages and Predicates
Stage 0: condition
1 of selection*Stage 1: selection_name
selection_name:
Image|endswith: '\SharpLdapWhoami.exe'
Stage 2: selection_pe
selection_pe:
- OriginalFileName|contains: 'SharpLdapWhoami'
- Product: 'SharpLdapWhoami'
Stage 3: selection_flags1
selection_flags1:
CommandLine|endswith:
- ' /method:ntlm'
- ' /method:kerb'
- ' /method:nego'
- ' /m:nego'
- ' /m:ntlm'
- ' /m:kerb'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
CommandLine | ends_with |
| field:"CommandLine" kind:ends_with |
Image | ends_with |
| field:"Image" kind:ends_with value:"\SharpLdapWhoami.exe" |
OriginalFileName | match |
| field:"OriginalFileName" kind:match value:"SharpLdapWhoami" |
Product | eq |
| field:"Product" kind:eq value:"SharpLdapWhoami" |