{
  "family": "gracewire",
  "sample_count": 1,
  "category": "ransomware",
  "description": "<h3>Executive Summary</h3>\nGraceWire is a highly sophisticated, memory-resident Trojan primarily associated with the financially motivated threat group TA505 (the actors behind the Dridex banking trojan and Locky ransomware). GraceWire functions as a persistent backdoor and advanced information stealer, frequently deployed as a secondary payload following an initial compromise via FlawedAmmyy or legitimate remote administration tools abused by the attackers.\n\n<h3>Infection Vector and Technical Capabilities</h3>\nGraceWire is rarely the initial infection vector. It is typically downloaded and executed by a primary loader (like a malicious macro in a spear-phishing document) after TA505 has established a foothold. \n\nOnce executed, GraceWire exhibits advanced, stealthy capabilities:\n<ul>\n<li><strong>Fileless Execution (RunPE):</strong> GraceWire is highly evasive. The loader injects the GraceWire payload directly into the memory space of a legitimate, running Windows process (Process Hollowing / RunPE), ensuring the actual malicious binary never touches the hard drive in an unencrypted state.</li>\n<li><strong>Advanced Data Harvesting:</strong> It possesses extensive capabilities to steal credentials from web browsers, email clients, and FTP software. It also includes keylogging functionality and the ability to capture screenshots of the active desktop.</li>\n<li><strong>Network Proxying and C2:</strong> GraceWire can establish an encrypted tunnel to its Command and Control (C2) server, acting as a proxy. This allows attackers to route their malicious traffic *through* the infected endpoint, masking their true location and bypassing perimeter firewall restrictions.</li>\n</ul>\n\n<h3>Threat Assessment</h3>\nA GraceWire detection is a critical security incident indicating a deep compromise by a Tier-1 cybercriminal organization (TA505). Its presence means the attackers have achieved stable, persistent access and are actively harvesting credentials. If left unmitigated, GraceWire infections frequently precede the deployment of enterprise-wide ransomware (such as Clop).\n\n<h3>Incident Response and Remediation</h3>\n<ul>\n<li><strong>Behavioral Analysis (EDR):</strong> Because GraceWire operates primarily in memory, static antivirus is often ineffective. Eradication requires EDR solutions capable of detecting process injection and anomalous network proxying behavior.</li>\n<li><strong>Immediate Isolation and Triage:</strong> Isolate the endpoint immediately to cut the C2 connection and halt data exfiltration. Assume the network is actively being targeted for ransomware deployment.</li>\n<li><strong>Total Infrastructure Rebuild:</strong> Due to the sophistication of TA505 and the likelihood of compromised administrative credentials and lateral movement, attempting to \"clean\" the system is insufficient. A complete bare-metal wipe and re-image from a trusted baseline is mandatory, alongside a global password reset.</li>\n</ul>",
  "cta": "Published by the SystemHelpdesk team.",
  "aliases": [
    "Trojan.GraceWire",
    "Backdoor.GraceWire",
    "Win32/GraceWire",
    "TA505.Payload"
  ],
  "enrichment_level": "insufficient_information",
  "faq": [],
  "faq_count": 0,
  "mitre_attack": [
    "T1055.012",
    "T1056.001",
    "T1090",
    "T1555.003"
  ],
  "cisa_advisory": null,
  "last_updated": "2026-07-02T07:16:31Z",
  "type": "Trojan / Info Stealer (TA505)",
  "target_industries": [
    "Global / Opportunistic"
  ],
  "motivation": "Opportunistic",
  "threat_actors": [
    "Unknown / Cybercriminal"
  ],
  "target_geographies": [
    "Global"
  ]
}