ATT&CK coverage › Technique
Remote System Discovery T1018
Adversaries may attempt to get a listing of other systems by IP address, hostname, or other logical identifier on a network that may be used for Lateral Movement from the current system. Functionality could exist within remote access tools to enable this, but utilities available on the operating system could also be used such as Ping, <code>net view</code> using Net, or, on ESXi servers, `esxcli network diag ping`.
Events covered
6 catalog events are tagged with this technique by at least one rule.
Authoring guide
Patterns shared across the 23 rules above: which fields they filter on, what specific values they look for, and what they exclude. Field names are normalized across vendors so Sigma's Image, Elastic's process.name, and Splunk's process_name collapse into one row. Each rule contributes at most once per row.
Fields filtered most (14 distinct)
The fields most rules look at when detecting this technique. The How column shows the operators authors use (eq, wildcard, regex_match, match) and how often each appears. Sample values are concrete examples to start from, not an exhaustive list.
Top indicator values (193 distinct)
Specific (field, operator, value) combinations the rules check for, ranked by how many rules under this technique use each one. The Corpus reach column counts how many rules across the entire catalog (any technique) check the same combination. High numbers point to widely-used indicators that are likely noisy on their own; combine them with another condition for useful signal. Blank means the combination is specific to rules under this technique.
Rules under this technique
Every rule in the catalog tagged with this technique, grouped by vendor. Click a rule title for its full predicates, exclusions, and indicators.
Sigma 13 rules
- Active Directory Computers Enumeration With Get-AdComputer
- Chopper Webshell Process Pattern
- DirectorySearcher Powershell Exploitation
- HackTool - NetExec Execution
- Nltest.EXE Execution
- Potential Unconstrained Delegation Discovery Via Get-ADComputer - ScriptBlock
- PUA - AdFind Suspicious Execution
- PUA - Adidnsdump Execution
- Renamed AdFind Execution
- Share And Session Enumeration Using Net.EXE
- Suspicious Scan Loop Network
- Webshell Detection With Command Line Keywords
- Webshell Hacking Activity Patterns
Splunk 8 rules
- GetAdComputer with PowerShell Script Block
- GetDomainComputer with PowerShell Script Block
- GetDomainController with PowerShell Script Block
- GetWmiObject Ds Computer with PowerShell Script Block
- Remote System Discovery with Adsisearcher
- Windows Get-AdComputer Unconstrained Delegation Discovery
- Windows PowerView Constrained Delegation Discovery
- Windows PowerView Unconstrained Delegation Discovery