Malicious Command Shell Spawned by Wing FTP Server Process

ATT&CK techniques

Initial Access → Execution

Recon
Resource Dev
Initial Access
- T1190Exploit Public-Facing Application
Execution
- T1059.003Windows Command Shell
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects the Wing FTP server process WFTPServer.exe spawning cmd.exe or powershell.exe, the remote code execution chain Huntress observed during in-the-wild exploitation of CVE-2025-47812. Attackers abuse a null-byte and Lua injection flaw to run arbitrary commands as the FTP service. A command shell parented by the FTP server is rarely legitimate and is a high-confidence exploitation indicator.

Reporting behind it

Related detections9 linkedT1059.003 — drag to rearrange

Malicious IIS Worker Spawning nslookup via WS_FTP Deserialization

Suspicious Reconnaissance Commands Spawned by Samsung MagicINFO Server

Suspicious SolarWinds Web Help Desk Java Process Spawning Command Shell (via process_creation)

MSSQL Server Process Spawning Command Shell via xp_cmdshell

Suspicious MSSQL xp_cmdshell OS Command Execution via sqlservr.exe (via process_creation)

Windows Process Creation: CrushFTP spawning PowerShell, CMD, and scripting tool execution

Windows: Suspicious Command-Line Child Processes Spawned by SAP NetWeaver Paths

Linux File Events: Webshell-like JSP/Java/Class Creation in SAP NetWeaver Directories

Linux: Suspicious child processes spawned by SAP NetWeaver (web application directories)

Malicious Command Shell Spawned by Wing FTP Server Process

Pivot detection · T1059.003 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

Full detection rule

Unlock this rule to view and copy it

The detection logic is included with a plan. Everything else — context, mappings and implementation details — stays free on this page.

Sign in for 3 free unlocks

Signing in gives you 3 unlocks to spend on any rule in the library. No card, and they do not expire.

Also included

Unlocked rules convert on this page — to Splunk SPL or Splunk — Raw Index SPL or Microsoft Sentinel KQL or Microsoft Sentinel ASIM ASIM KQL or Microsoft Defender XDR KQL or Elastic Security KQL or Elastic Security Lucene or Elastic Security ES|QL or CrowdStrike Falcon CQL or SentinelOne PowerQuery or Palo Alto Cortex XDR XQL or Carbon Black Cloud Platform Search or Carbon Black EDR Process Search or Google Security Operations UDM Search or IBM QRadar AQL or Sumo Logic Cloud SIEM Rules expression or Rapid7 InsightIDR LEQL or Graylog Search or OpenSearch Lucene or OpenSearch PPL PPL or Grafana Loki LogQL or SQLite SQL or Zircolite SQLite — with the log-source profile the engine picked, the field map it used, and everything it could not express. Converting a rule you have unlocked costs no further credit.

See it run on a free rule →Convert your own rule →