{
  "family": "huntpos",
  "sample_count": 2,
  "category": "advanced_threat",
  "description": "Malware:Win32/Huntpos is a highly destructive and specialized Point-of-Sale (PoS) malware family. It is engineered specifically to target retail, hospitality, and food service environments. Its primary objective is to scrape the volatile memory (RAM) of infected PoS terminals to extract unencrypted credit card Track 1 and Track 2 data before the transaction is encrypted and sent to the payment processor. This stolen data is then exfiltrated and sold on dark web carding forums (like Joker's Stash).<br><br><b>Understanding Huntpos (PoS RAM Scrapers)</b><br>To a retail employee using the register, the machine functions normally, allowing transactions to process. However, to a security operations center (SOC) or a forensic investigator, a Huntpos infection represents a catastrophic PCI-DSS breach, leading to massive financial liability, brand damage, and regulatory fines (`T1005`).<br><br><b>Execution and Memory Scraping Mechanics</b><br>Huntpos is typically deployed after attackers gain initial access to the corporate network (often via compromised Remote Desktop Protocol (RDP) - `T1133` - or phishing) and move laterally to the isolated PoS VLAN. Once executed on a terminal, Huntpos establishes persistence as a Windows Service (`T1543.003`). It operates by continuously iterating through the memory space of running processes (specifically targeting the payment application executable). It uses regular expressions (Regex) to identify data patterns matching the format of credit card magnetic stripe data (Track 1/Track 2) (`T1005`). Once identified, the data is dumped to a hidden, encrypted log file on disk (`T1074.001`) and periodically exfiltrated to an external C2 server via HTTP POST requests (`T1041`).<br><br><b>Indicators of Compromise & Impact</b><br>The impact is massive financial fraud resulting from compromised customer payment cards. Host-based IoCs include the presence of unexpected Windows Services on PoS terminals, anomalous DLLs injected into the payment application process, and the existence of encrypted, hidden log files (often disguised with generic names like `syslog.dat` or `winstat.tmp`) in system directories. Network IoCs include the PoS terminal making unexpected outbound HTTP connections to external, non-whitelisted IP addresses.",
  "cta": "Published by the SystemHelpdesk team.",
  "aliases": [],
  "enrichment_level": "expert-seo",
  "faq": [
    {
      "@type": "Question",
      "name": "What is Huntpos and what threat category does it belong to?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Huntpos is classified as a Advanced Threat. Documented across security telemetry, it is engineered to execute unauthorized operations, establish persistent footholds on target endpoints, and facilitate malicious campaigns targeting enterprise and individual environments."
      }
    },
    {
      "@type": "Question",
      "name": "How does Huntpos establish persistence and evade defensive controls?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Huntpos typically establishes persistence through registry run keys, scheduled tasks, or service installations, while evading signature-based antivirus solutions through code obfuscation, memory injection, or anti-analysis sandbox checks."
      }
    },
    {
      "@type": "Question",
      "name": "What are the essential incident response steps for mitigating a Huntpos compromise?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Security teams responding to Huntpos should immediately isolate affected endpoints from the network, perform memory triage to capture volatile forensic artifacts, audit registry and startup persistence mechanisms, revoke exposed user credentials, and restore systems from verified, clean backups."
      }
    },
    {
      "@type": "Question",
      "name": "What lateral movement and credential access tactics does Huntpos leverage in enterprise intrusions?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Huntpos frequently utilizes privileged account harvesting techniques such as LSASS memory dumping, Kerberoasting, and token impersonation to escalate privileges. Once administrative credentials are acquired, it pivots across the victim network utilizing living-off-the-land binaries (LOLBins) such as WMI, PowerShell remoting, and PsExec, or abuses remote desktop protocols (RDP) to reach critical internal repositories and domain controllers."
      }
    },
    {
      "@type": "Question",
      "name": "How does Huntpos maintain covert communications and evade perimeter network monitoring?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Huntpos often relies on multi-stage command and control (C2) architectures utilizing encrypted protocols over standard web ports (HTTPS/443 or DNS tunneling) to blend in with legitimate enterprise network traffic. Many variants incorporate proxy networks, domain fronting, or cloud services (such as Microsoft Graph API, Google Drive, or Telegram) to masquerade C2 channels, bypassing traditional signature-based egress filtering."
      }
    }
  ],
  "faq_count": 5,
  "mitre_attack": [
    "T1074.001",
    "T1543.003",
    "T1005",
    "T1041"
  ],
  "cisa_advisory": null,
  "last_updated": "2026-06-09",
  "mitre_attack_detail": [
    {
      "id": "T1005",
      "name": "Data from Local System (Scraping RAM for Track 1/Track 2 data)",
      "tactic": "Collection"
    },
    {
      "id": "T1543.003",
      "name": "Create or Modify System Process: Windows Service (Persistence mechanism)",
      "tactic": "Persistence"
    },
    {
      "id": "T1074.001",
      "name": "Data Staged: Local Data Staging (Storing scraped cards in a hidden file)",
      "tactic": "Collection"
    },
    {
      "id": "T1041",
      "name": "Exfiltration Over C2 Channel",
      "tactic": "Exfiltration"
    }
  ],
  "containment_steps": [
    "Immediately disconnect the infected PoS terminals from the network (unplug the Ethernet cable) to halt the exfiltration of stolen credit card data.",
    "Do NOT reboot or power off the PoS terminal; volatile memory (RAM) contains critical forensic evidence, including the malware's active processes and potentially unencrypted card data.",
    "Engage a specialized Incident Response (IR) firm and a PCI Forensic Investigator (PFI) immediately, as required by PCI-DSS regulations.",
    "Perform a massive enterprise hunt across the entire PoS network VLAN for similar indicators of compromise; PoS malware is rarely deployed to a single machine."
  ],
  "what_to_avoid": [
    "Do not attempt to 'clean' the PoS terminal with standard antivirus; the machine is compromised and must be forensically imaged and then securely wiped.",
    "Avoid communicating about the breach on the compromised corporate network; use out-of-band communication."
  ],
  "target_industries": [
    "Global / Opportunistic"
  ],
  "motivation": "Opportunistic",
  "threat_actors": [
    "Unknown / Cybercriminal"
  ],
  "target_geographies": [
    "Global"
  ],
  "attack_stage": [
    "execution",
    "persistence"
  ],
  "ecosystem": [
    "windows_pe"
  ],
  "is_emerging": false,
  "target_platforms": [
    "Windows 11",
    "Windows 10",
    "Windows Server 2022",
    "Windows Server 2019"
  ]
}