Detection rules › Splunk
WMIC Explicit Credentials (Sysmon)
Prior to the first lateral movement, threat actors may test credentials and gather information from their targeted remote server using WMI
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Initial Access | |
| Execution | |
| Persistence | |
| Privilege Escalation | |
| Stealth |
References
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 1: Process creation |
Rule body
id: '12916.18557'
title: WMIC Explicit Credentials
description: 'Prior to the first lateral movement, threat actors may test credentials
and gather information from their targeted remote server using WMI.Living Off the
Land Binary and Scripts (LOLBAS) (LOLBIN) -- Threat Actor Association: Flax Typhoon,
Volt Typhoon (Bronze Silhouette, Vanguard Panda) - Software Association: Clop, Quantum'
logic_format: Splunk
logic: '`get_endpoint_data` `get_endpoint_data_sysmon` (TERM(EventCode=1) OR "<EventID>1<")
("wmic" OR "wmic.exe") ("/password") | table _time, host, user process, process_*,
signature_id, parent_* | bin span=1s | stats values(*) as * by _time, host '
techniques:
- persistence:valid accounts
- privilege-escalation:valid accounts
- execution:windows management instrumentation
- discovery:remote system discovery
technique_id:
- T1078
- T1047
data_category:
- Windows Sysmon
references:
- https://thedfirreport.com/2022/04/25/quantum-ransomware/
Stages and Predicates
Stage 1: search
`get_endpoint_data` `get_endpoint_data_sysmon` (TERM(EventCode=1) OR "<EventID>1<") ("wmic" OR "wmic.exe") ("/password")
Stage 2: table
| table _time, host, user process, process_*, signature_id, parent_*
Stage 3: bucket
| bin span=1s
Stage 4: stats
| stats values(*) as * by _time, host
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
EventCode | eq |
| field:"EventID" kind:eq value:"1" |
Search terms
These SPL tokens match against raw event text.
| Stage | Term |
|---|---|
| 1 | "<EventID>1<" |
| 1 | "wmic" |
| 1 | "wmic.exe" |
| 1 | "/password" |