Elastic Security Detection Rules

Potential SSH-IT SSH Worm Downloaded

Last updated 5 months ago on 2025-03-20
Created 2 years ago on 2023-09-21

About

Identifies processes that are capable of downloading files with command line arguments containing URLs to SSH-IT's autonomous SSH worm. This worm intercepts outgoing SSH connections every time a user uses ssh.
Tags
Domain: EndpointOS: LinuxUse Case: Threat DetectionTactic: Lateral MovementData Source: Elastic DefendData Source: Elastic EndgameData Source: Auditd ManagerData Source: CrowdstrikeData Source: SentinelOneLanguage: eql
Severity
medium
Risk Score
47
MITRE ATT&CK™

Lateral Movement (TA0008)(opens in a new tab or window)

↳ Remote Services (T1021)(opens in a new tab or window)

↳ Remote Service Session Hijacking (T1563)(opens in a new tab or window)

License
Elastic License v2(opens in a new tab or window)

Definition

Rule Type
Event Correlation Rule
Integration Pack
Prebuilt Security Detection Rules
Index Patterns
auditbeat-*endgame-*logs-auditd_manager.auditd-*logs-crowdstrike.fdr*logs-endpoint.events.process*logs-sentinel_one_cloud_funnel.*
Related Integrations

endpoint(opens in a new tab or window)

auditd_manager(opens in a new tab or window)

crowdstrike(opens in a new tab or window)

sentinel_one_cloud_funnel(opens in a new tab or window)

Query
process where host.os.type == "linux" and event.type == "start" and
 event.action in ("exec", "exec_event", "start", "ProcessRollup2", "executed", "process_started") and
 process.name in ("curl", "wget") and process.args : (
  "https://thc.org/ssh-it/x", "http://nossl.segfault.net/ssh-it-deploy.sh", "https://gsocket.io/x",
  "https://thc.org/ssh-it/bs", "http://nossl.segfault.net/bs"
)

Install detection rules in Elastic Security

Detect Potential SSH-IT SSH Worm Downloaded in the Elastic Security detection engine by installing this rule into your Elastic Stack.

To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(opens in a new tab or window).