Siemens Ruggedcom Rox MX5000: Critical Third-Party Vulnerabilities — Detection and Remediation Guide

---
title: Potential Ruggedcom Rox Administrative Access from Non-Admin Source
id: 88c3d4a1-2f4b-4d12-9e56-123456789abc
status: experimental
description: Detects successful login or administrative access to Siemens Ruggedcom devices from IP addresses outside known administrative subnets.
references:
  - https://www.cisa.gov/news-events/ics-advisories/icsa-26-134-16
author: Security Arsenal
date: 2025/02/18
tags:
  - attack.initial_access
  - attack.t1078
logsource:
  category: firewall
  product: fortinet
detection:
  selection:
    dst_ip|cidr:
      - '10.0.0.0/8'
      - '192.168.0.0/16'
      - '172.16.0.0/12'
    dst_port:
      - 22
      - 23
      - 80
      - 443
      - 8443
    action: 'accept'
  filter_known_admin:
    src_ip|cidr:
      - '192.168.10.0/24' # Example Admin Subnet
  condition: selection and not filter_known_admin
falsepositives:
  - Legitimate access from new engineering workstation
level: high
---
title: ICS Gateway Anomalous Outbound Traffic
id: 99b4e5b2-3g5c-5e23-0f67-234567890bcd
status: experimental
description: Detects outbound connections from ICS gateway devices (like Ruggedcom) to the public internet, which may indicate C2 beaconing or data exfiltration.
references:
  - https://attack.mitre.org/techniques/T1071/
author: Security Arsenal
date: 2025/02/18
tags:
  - attack.exfiltration
  - attack.c2
  - attack.t1071
logsource:
  category: network_connection
  product: zeek
detection:
  selection:
    dst_ip|cidr:
      - '0.0.0.0/0'
    src_port:
      - 22
      - 443
  filter_internal:
    dst_ip|cidr:
      - '10.0.0.0/8'
      - '172.16.0.0/12'
      - '192.168.0.0/16'
  condition: selection and not filter_internal
falsepositives:
  - NTP sync to external time servers
  - License checks (if applicable)
level: high

// Hunt for unusual administrative login attempts to Ruggedcom devices
// Note: Adjust 'DeviceVendor' and 'DeviceProduct' based on your syslog parsing
let AdminSubnets = dynamic("192.168.10.0/24", "10.20.30.0/24");
Syslog
| where Facility in ('auth', 'authpriv', 'daemon')
| where SyslogMessage has "Ruggedcom" or SyslogMessage has "ROX"
| where ProcessName contains "sshd" or ProcessName contains "httpd"
| parse SyslogMessage with * "Accepted password for " User " from " SourceIP " port" * 
| extend SourceIP = trim('"', tostring(SourceIP))
| where ipv4_is_in_range(SourceIP, AdminSubnets) == false
| project TimeGenerated, Computer, SourceIP, User, SyslogMessage
| summarize count() by SourceIP, User, bin(TimeGenerated, 1h)
| order by count_ desc

-- Hunt for processes with established network connections on Linux endpoints
-- If Ruggedcom is managed via a jump host, this detects rogue shells
SELECT Pid, Name, Exe, Username, Cmdline
FROM pslist()
WHERE Name IN ('bash', 'sh', 'nc', 'netcat', 'telnet') 
   AND Suid == 0 
   AND Exe NOT IN ('/bin/bash', '/usr/bin/bash')

#!/bin/bash

# RUGGEDCOM ROX AUDIT SCRIPT
# Scans a subnet for Ruggedcom devices and checks for vulnerable versions.

# Configuration: Set your target subnet (e.g., 192.168.1.0/24)
TARGET_SUBNET="192.168.1.0/24"
SNMP_COMMUNITY="public" # Default, change if customized
VULN_VERSION="2.17.1"

# Create timestamp
DATE=$(date +%Y-%m-%d)
REPORT_FILE="ruggedcom_audit_$DATE.log"

echo "Starting Ruggedcom Rox Audit for $TARGET_SUBNET" | tee -a $REPORT_FILE

# 1. Identify potential Ruggedcom devices (MAC OUI check or Port Scan)
# Using nmap to check for open web/ssh ports commonly used by Ruggedcom
echo "[+] Scanning for devices with open ports 22, 80, 443..." | tee -a $REPORT_FILE
nmap -p 22,80,443 --open -oG - $TARGET_SUBNET | grep "Host:" | awk '{print $2}' > /tmp/rox_hosts.txt

if [ ! -s /tmp/rox_hosts.txt ]; then
    echo "[-] No hosts found with open management ports." | tee -a $REPORT_FILE
    exit 0
fi

# 2. Check System Description via SNMP (if available)
while read -r IP; do
    echo "\nChecking host: $IP" | tee -a $REPORT_FILE
    
    # Attempt to grab sysDescr.0 to identify device and version
    SYS_DESCR=$(snmpget -v2c -c $SNMP_COMMUNITY $IP 1.3.6.1.2.1.1.1.0 2>/dev/null | awk -F'"' '{print $2}')
    
    if [[ -n "$SYS_DESCR" ]]; then
        echo "Device Info: $SYS_DESCR" | tee -a $REPORT_FILE
        
        # Check if version string indicates pre-2.17.1 or matches vulnerable pattern
        # Note: Adjust regex based on actual string format returned by your device
        if [[ "$SYS_DESCR" =~ (Ruggedcom|ROX) ]]; then
            echo "[!] Potential Ruggedcom device detected at $IP" | tee -a $REPORT_FILE
            
            if [[ "$SYS_DESCR" != *"$VULN_VERSION"* ]]; then
                echo "[!!!] WARNING: Device version appears to be older than $VULN_VERSION or unknown." | tee -a $REPORT_FILE
            else
                echo "[+] Device version appears updated ($VULN_VERSION)." | tee -a $REPORT_FILE
            fi
        fi
    else
        echo "[-] SNMP failed or no response." | tee -a $REPORT_FILE
    fi
    
done < /tmp/rox_hosts.txt

echo "\nAudit complete. See $REPORT_FILE for details."
rm -f /tmp/rox_hosts.txt