ATT&CK Technique · Command and Control
T1572 Protocol TunnelingMapped by 10 reports, 22 detection rules and 14 tracked actors on The Hunters Ledger. Technique page on attack.mitre.org.
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Reports
Each report maps this technique in its own ATT&CK table, at the confidence the report states. The link opens that table.
Detection rules
Rules whose ATT&CK coverage line names this technique, by detection page. The link opens the page's coverage table.
Detection rules
Carrier Credential Harvesting Through a Customer's RouterChisel Client Establishing a Reverse SOCKS Tunnel (SIGMA, Detection); Chisel-Style Reverse-Tunnel WebSocket Upgrade Handshake (SURICATA, Hunting)
Detection rules
The Middle Tier: A Non-APT Operator's Reach Into Four Southeast Asian GovernmentsCustom Go Tunnel-Proxy Module (gen_go_tunnel_proxy_mux_elf) (YARA, Detection); Chisel Operator Host-Key Fingerprints (susp_chisel_operator_key_fingerprint) (YARA, Detection); Chisel Reverse Tunnel Client or Server Execution (SIGMA, Hunting)
Detection rules
GHOST Cryptojacker Kit — Vova75Rus Supply Chain (77.110.96.200)MAL_Linux_GHOST_Hysteria_Operator_Wrapper (YARA, Hunting); Hysteria V2 QUIC Proxy Process Execution on Linux Server (SIGMA, Hunting); GHOST Cryptojacker Kit Hysteria v2 QUIC Backdoor Egress: Known Operator Ports (SURICATA, Hunting); GHOST Cryptojacker Kit Hysteria v2 QUIC Backdoor Inbound: Victim-Hosted Listener Ports (SURICATA, Hunting)
Detection rules
Russian Gemini CLI Credential Mill (213.165.51.115)Cloudflared Access TCP Tunnel to Potentially Unauthorized Hostname (SIGMA, Hunting); cloudflared Tunnel QUIC Egress to Cloudflare Edge (UDP 7844) (SURICATA, Hunting)
Detection rules
Turkish ARPA AI-Augmented Observability Compromise (209.38.205.158)Rule 3: Insider Tunnel-Setup Turkish-Language Operator Document (YARA, Detection); Sigma Rule 4: Reverse SSH Tunnel Registration from Windows AD User Host to Operator IP (SIGMA, Detection); Sigma Rule 5: PuTTY Saved Session Created with Tunnel or ARPA Name (SIGMA, Detection); Sigma Rule 9: Operator-Supplied SSH Key File in User `.ssh` Directory (SIGMA, Detection); Sigma Rule 10: Non-Splunk Process Connecting to Localhost Port 8089 (SIGMA, Hunting); Sigma Rule 12: Insider Deploying Outbound SSH Tunnel from Enterprise AD-Joined Workstation (SIGMA, Hunting)
Detection rules
AdaptixC2 Open Directory Exposure (45.130.148.125)Ligolo-ng v0.8.3 Reverse Tunnel Agent (YARA, Detection); Ligolo-ng Reverse Tunnel Agent Execution (SIGMA, Detection)
Detection rules
OpenStrike Expanded Toolkit — 106 New Files (2026-04-08)CovertVPN Layer 2 Bridge Module (YARA, Detection); CovertVPN HTTP Data Channel GET /receive Endpoint (SURICATA, Hunting); CovertVPN ICMP Tunnel Oversized Payload with Data or Keepalive Marker (SURICATA, Hunting)
Tracked actors
Designations whose reports map this technique.
- UTA-2026-002: XiebroC2 and Covenant operator working from a Chinese-language build environment
- UTA-2026-003: Commodity MaaS consumer running Shadow RAT and XWorm from one Windows VPS
- UTA-2026-004: Developer of the OpenStrike multi-implant C2 toolkit, with a cracked Cobalt Strike arsenal
- UTA-2026-005: Chaos ransomware builder user with a private five-stage crypter
- UTA-2026-006: Stock AdaptixC2 operator with an operator-written PowerShell and .NET injection chain
- UTA-2026-012: AI-augmented credential-mill operator using an LLM for per-target password mutation
- UTA-2026-013: Espionage-flavoured operator harvesting a state-affiliated insurer's observability stack through an AI agent platform
- UTA-2026-016: GHOST cryptojacker kit customer (operator A) with self-hosted mining pool proxies
- UTA-2026-017: GHOST cryptojacker kit customer (operator B) using public mining pools, host abandoned
- UTA-2026-018: Hands-on-keyboard operator exploiting four Southeast Asian governments with a bespoke edge-device toolkit
- UTA-2026-019: Grey-market personal-data harvester running scores of LLM-assisted attack scripts against Chinese consumer platforms
- UTA-2026-021: Assembler-model intrusion operator staging other actors' tooling against one German victim forest
- UTA-2026-023: Telecom-focused operator reaching a carrier's credential plane through a customer's managed router
- UTA-2026-024: Windows post-exploitation intrusion set with Sliver and a blockchain-resolved implant
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