{
  "family": "sathurbot",
  "sample_count": 1,
  "category": "trojan",
  "description": "Trojan:Win32/Sathurbot is a sophisticated botnet agent known for its unique propagation and Command and Control (C2) methods. Unlike bots that rely solely on email spam, Sathurbot actively utilizes torrents and compromised WordPress sites to distribute itself (`T1189`), and leverages legitimate search engines or peer-to-peer mechanisms for resilience (`T1071.001`).<br><br><b>Understanding Sathurbot (Botnet Architecture)</b><br>To an end-user, the infection is silent, though their internet connection may seem saturated. For a SOC analyst, a Sathurbot detection indicates the machine has been drafted into a global criminal network. It will be used to scrape the web for vulnerable CMS sites, perform brute-force attacks, or seed malicious torrents to infect others.<br><br><b>Execution and Propagation Mechanics</b><br>Sathurbot frequently arrives bundled within cracked software or pirated movies downloaded via torrents (`T1204.002`). Once executed, it establishes persistence and immediately begins communicating with its C2 infrastructure. Sathurbot is notable for using heavily obfuscated, multi-stage loading to evade detection (`T1027`). Once integrated into the botnet, the infected machine receives 'jobs'. These jobs often involve performing automated Google or Bing searches to find WordPress sites, and then launching dictionary attacks (`T1110`) against their login pages to expand the botnet's infrastructure.<br><br><b>Indicators of Compromise & Impact</b><br>The impact includes the consumption of network resources and the legal liability of the endpoint participating in attacks against third parties. Host-based IoCs include high CPU usage (during brute-force tasks) and the presence of unknown executables in the `%AppData%` directory. Network IoCs are highly distinct: an infected host will generate massive amounts of automated traffic to search engines, followed by numerous HTTP POST requests (login attempts) to `wp-login.php` pages on hundreds of unrelated domains.",
  "cta": "Published by the SystemHelpdesk team.",
  "aliases": [],
  "enrichment_level": "expert-seo",
  "faq": [
    {
      "@type": "Question",
      "name": "What is Sathurbot and what threat category does it belong to?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Sathurbot 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 Sathurbot establish persistence and evade defensive controls?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Sathurbot 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 Sathurbot compromise?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Security teams responding to Sathurbot 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 Sathurbot?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Sathurbot 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 Sathurbot across enterprise endpoints?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Defenders should hunt for Sathurbot 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": [
    "T1110",
    "T1189",
    "T1071.001"
  ],
  "cisa_advisory": null,
  "last_updated": "2026-06-09",
  "mitre_attack_detail": [
    {
      "id": "T1110",
      "name": "Brute Force (The botnet's primary method for compromising new WordPress sites)",
      "tactic": "Credential Access"
    },
    {
      "id": "T1189",
      "name": "Drive-by Compromise (Using compromised sites and torrents to spread)",
      "tactic": "Initial Access"
    },
    {
      "id": "T1071.001",
      "name": "Application Layer Protocol: Web Protocols (Using HTTP/HTTPS for C2 and attacks)",
      "tactic": "Command and Control"
    }
  ],
  "containment_steps": [
    "Isolate the endpoint from the network to stop it from participating in brute-force attacks against external infrastructure.",
    "Analyze EDR logs to identify the initial executable (likely downloaded via a torrent client) that launched the Sathurbot agent.",
    "Review DNS logs to identify the C2 domains providing instructions to the bot, and block them.",
    "Ensure endpoint AV signatures are updated and run a full system scan to remove the persistent bot components."
  ],
  "what_to_avoid": [
    "Do not ignore 'abuse' emails from ISPs regarding your IP address performing brute-force attacks; this is a primary indicator of a Sathurbot infection.",
    "Avoid relying solely on blocking the target IPs the bot is attacking; the C2 server will simply issue new targets."
  ],
  "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"
  ]
}