{
  "family": "netpass",
  "sample_count": 9,
  "category": "trojan",
  "description": "HackTool:Win32/Netpass is a heuristic detection applied to the legitimate NirSoft utility 'Network Password Recovery' (`netpass.exe`), as well as modified variants of it. This tool is designed to recover all network passwords stored on the local system by the current logged-on user (including saved Wi-Fi keys, RDP credentials, and Outlook Exchange passwords). While it has legitimate administrative uses, threat actors and malware heavily abuse it during the post-exploitation phase to quickly harvest local credentials for lateral movement.<br><br><b>Understanding Netpass Abuse</b><br>To a standard user, Netpass is invisible; it is a command-line utility. For a security analyst, the execution of `netpass.exe` (or a renamed variant) by a standard user account is a massive red flag. It indicates that an attacker has gained a foothold on the endpoint and is actively dumping the Windows Credential Manager to find passwords that will allow them to pivot to other machines or servers on the domain.<br><br><b>Execution and Credential Harvesting Mechanics</b><br>Netpass is typically dropped onto the system by an Initial Access Broker trojan or manually copied by an attacker after establishing a reverse shell (`T1105`). The attacker executes the tool (`T1204.002`), often using command-line arguments to silently output the results to a text file (e.g., `netpass.exe /scomma %temp%\\creds.csv`) (`T1059.004`). The tool queries the Windows Data Protection API (DPAPI) and the Credential Manager (`T1003`) to extract plaintext passwords that the user has opted to 'Save' or 'Remember'. The attacker then exfiltrates the resulting text file via their C2 channel.<br><br><b>Indicators of Compromise & Impact</b><br>The impact is the total compromise of all saved network credentials for that user profile, significantly accelerating lateral movement within the enterprise. The primary IoC is an EDR alert for the execution of a file matching the hash or metadata of the NirSoft Netpass utility, especially if executed from a temporary directory (`%Temp%` or `C:\\PerfLogs`). Analysts should look for command-line arguments involving silent execution (`/scomma`, `/stext`) targeting text files.",
  "cta": "Published by the SystemHelpdesk team.",
  "aliases": [],
  "enrichment_level": "expert-seo",
  "faq": [
    {
      "@type": "Question",
      "name": "What is Netpass and what threat category does it belong to?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Netpass is classified as a Trojan. 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 Netpass establish persistence and evade defensive controls?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Netpass 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 Netpass compromise?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Security teams responding to Netpass 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 secondary payloads and staging behaviors are commonly associated with Netpass?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Netpass frequently operates as a loader or dropper designed to establish a foothold before downloading and executing secondary high-impact malware payloads. Depending on the threat actor's objectives, these dropped modules can range from ransomware and banking injects to modular infostealers and remote management backdoors."
      }
    },
    {
      "@type": "Question",
      "name": "How can security operations teams effectively detect and hunt for Netpass across enterprise endpoints?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Defenders should hunt for Netpass by deploying behavioral endpoint detection and response (EDR) rules that monitor suspicious process spawning (such as cmd.exe or powershell.exe spawned from office documents or temporary directories), anomalous outbound network connections from non-browser binaries, and unauthorized modifications to Windows Run keys and scheduled task registries."
      }
    }
  ],
  "faq_count": 5,
  "mitre_attack": [
    "T1555",
    "T1105",
    "T1003",
    "T1059.004"
  ],
  "cisa_advisory": null,
  "last_updated": "2026-06-09",
  "mitre_attack_detail": [
    {
      "id": "T1003",
      "name": "OS Credential Dumping (Querying Windows Credential Manager)",
      "tactic": "Credential Access"
    },
    {
      "id": "T1555",
      "name": "Credentials from Password Stores",
      "tactic": "Credential Access"
    },
    {
      "id": "T1059.004",
      "name": "Command and Scripting Interpreter (Command-line execution)",
      "tactic": "Execution"
    },
    {
      "id": "T1105",
      "name": "Ingress Tool Transfer",
      "tactic": "Command and Control"
    }
  ],
  "containment_steps": [
    "Isolate the endpoint immediately; active credential dumping means an attacker is currently operating on the machine and attempting to move laterally.",
    "Assume all passwords stored in the Windows Credential Manager (RDP, network shares, Outlook) are compromised. Enforce an immediate password reset for the affected user account.",
    "Investigate EDR logs to determine *how* the Netpass utility was dropped onto the machine to identify the initial entry vector (e.g., a reverse shell or a dropper trojan).",
    "Hunt across the enterprise for the specific hash of the Netpass utility to ensure the attacker hasn't copied it to other machines."
  ],
  "what_to_avoid": [
    "Do not assume the execution was legitimate administrative activity without explicitly verifying with the IT team; attackers frequently rename these tools to blend in.",
    "Avoid closing the incident simply by deleting the tool; the passwords have already been extracted and exfiltrated."
  ],
  "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 7"
  ]
}