{
  "family": "exchanger",
  "sample_count": 1,
  "category": "ransomware",
  "description": "<h3>Executive Summary</h3>\nExchanger is a broad classification often applied to malware, typically trojans or potentially unwanted applications (PUAs), that facilitates the unauthorized exchange, download, or transfer of secondary malicious payloads. It acts as an intermediary or \"downloader\" within a broader infection chain, establishing a foothold before pulling down more destructive threats.\n\n<h3>Behavioral Characteristics and Functionality</h3>\nThe \"Exchanger\" moniker is derived from its primary behavior: exchanging small bits of telemetry with a command-and-control (C2) server in return for instructions or larger malware executables.\n\nTypically distributed via drive-by downloads or malicious email attachments, an Exchanger variant operates with stealth:\n<ul>\n<li><strong>Reconnaissance:</strong> Upon execution, it performs a quick check of the local environment (OS version, installed antivirus) and \"exchanges\" this fingerprint with the C2 server.</li>\n<li><strong>Payload Delivery:</strong> Based on the fingerprint, the C2 server dictates which payload is appropriate for the victim. The Exchanger then downloads and executes this secondary payload (often ransomware, info-stealers, or crypto-miners).</li>\n<li><strong>Persistence:</strong> Exchangers usually establish basic persistence via registry run keys to ensure they can continue to download updated payloads or new malware variants over time.</li>\n</ul>\n\n<h3>Risk Assessment</h3>\nAn Exchanger detection is a critical indicator of compromise (IOC). While the Exchanger executable itself may not encrypt files or steal data, its presence guarantees that a secondary, highly destructive payload is either currently being downloaded or has already been executed on the endpoint.\n\n<h3>Incident Response and Remediation</h3>\n<ul>\n<li><strong>Immediate Isolation:</strong> Disconnect the infected endpoint from the network immediately to interrupt the \"exchange\" process and halt the download of secondary payloads.</li>\n<li><strong>Network Forensics:</strong> Analyze proxy logs and firewall traffic originating from the infected endpoint to identify the C2 domains or IP addresses the Exchanger communicated with. Block these IOCs enterprise-wide.</li>\n<li><strong>Deep System Scan:</strong> Perform a comprehensive, offline scan of the endpoint to locate and eradicate both the initial Exchanger executable and any secondary payloads it may have successfully deployed.</li>\n</ul>",
  "cta": "Published by the SystemHelpdesk team.",
  "aliases": [
    "Trojan.Exchanger",
    "Downloader.Exchanger",
    "Win32/Exchanger"
  ],
  "enrichment_level": "insufficient_information",
  "faq": [],
  "faq_count": 0,
  "mitre_attack": [
    "T1105",
    "T1059",
    "T1071.001"
  ],
  "cisa_advisory": null,
  "last_updated": "2026-07-01T16:09:08Z",
  "type": "Downloader",
  "target_industries": [
    "Global / Opportunistic"
  ],
  "motivation": "Opportunistic",
  "threat_actors": [
    "Unknown / Cybercriminal"
  ],
  "target_geographies": [
    "Global"
  ]
}