Gracewire
Overview
Executive Summary
GraceWire 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.Infection Vector and Technical Capabilities
GraceWire 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. Once executed, GraceWire exhibits advanced, stealthy capabilities:- Fileless Execution (RunPE): 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.
- Advanced Data Harvesting: 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.
- Network Proxying and C2: 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.
Threat Assessment
A 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).Incident Response and Remediation
- Behavioral Analysis (EDR): 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.
- Immediate Isolation and Triage: Isolate the endpoint immediately to cut the C2 connection and halt data exfiltration. Assume the network is actively being targeted for ransomware deployment.
- Total Infrastructure Rebuild: 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.
Known aliases
Threat reports may refer to this family under multiple names:
MITRE ATT&CK Techniques
This family has been observed using the following ATT&CK techniques: T1055.012 T1056.001 T1090 T1555.003
Tactical Mitigations
Based on the techniques used by this family, consider the following defensive strategies:
- T1056.001: Implement Endpoint Detection and Response (EDR) to monitor for suspicious API calls related to keystroke interception. Enforce Multi-Factor Authentication (MFA) to render stolen passwords useless.
Generated Detections (Boilerplate)
These YARA and Sigma rules are auto-generated based on the family name and aliases. They must be heavily tuned before deployment in a production environment.
YARA Rule
rule MALWARE_WIN_GRACEWIRE {
meta:
description = "Detects Gracewire (ransomware)"
author = "SystemHelpdesk Boilerplate Generator"
date = "2026-07-06"
strings:
$s1 = "gracewire" ascii wide nocase
$s2 = "trojan.gracewire" ascii wide nocase
$s3 = "backdoor.gracewire" ascii wide nocase
$s4 = "win32/gracewire" ascii wide nocase
$s5 = "ta505.payload" ascii wide nocase
condition:
uint16(0) == 0x5a4d and any of them
}Sigma Rule
title: Suspicious Gracewire Activity
id: 279ce2613bde61b5fcec04883caf645e
status: experimental
description: Detects generic indicators of the gracewire malware family.
logsource:
category: process_creation
product: windows
detection:
selection:
Image|endswith:
- '\cmd.exe'
- '\powershell.exe'
CommandLine|contains:
- "*gracewire*"
- "*trojan.gracewire*"
- "*backdoor.gracewire*"
- "*win32/gracewire*"
- "*ta505.payload*"
condition: selection
level: mediumReferences & External Analysis
- Search "gracewire" on VirusTotal (External Analysis)
Frequently Asked Questions
How do I remove the Gracewire Ransomware from Windows?
Manual removal of Gracewire is highly discouraged as it may leave persistence mechanisms intact. We recommend disconnecting the device from the internet and utilizing a professional incident response service or enterprise-grade EDR software to conduct a full forensic sweep.
Is Gracewire a virus or a Ransomware?
Gracewire is classified as a Ransomware. Unlike traditional viruses that infect files, modern malware like Gracewire typically operates as a standalone payload designed to compromise systems, steal data, or deploy secondary stage implants.
What are the main symptoms of a Gracewire infection?
Symptoms of Gracewire can include unexpected system slowness, unauthorized outbound network traffic to unknown IP addresses, disabled security software, and suspicious background processes running from AppData or Temp directories.
Related Families (Category: ransomware)
Explore other malware families in the same category:
Protect Your Network Against Ransomwares
Want to prevent Gracewire and similar threats from compromising your organization? Read our comprehensive defensive guide: Ransomware Protection Guide.
Machine-readable
Get this profile as JSON: https://jordanricky1604-ship-it.github.io/malware-families-catalog/api/gracewire.json
Ecosystem & Interactive Environments
This profile is part of the Malware Families Catalog, a public dataset of 2,899 malware families. The catalog is also published across our ecosystem: Hugging Face, Kaggle, Zenodo, Replit, StackBlitz, CodeSandbox, and CodePen.