Gobot
Table of Contents
Overview
Backdoor:Win32/Gobot is an older, but persistent, Remote Access Trojan (RAT) and Botnet agent that relies on the Internet Relay Chat (IRC) protocol for Command and Control (C2). While IRC-based botnets are considered somewhat legacy compared to modern HTTP/S or peer-to-peer (P2P) architectures, Gobot is still utilized by lower-tier threat actors and script kiddies to assemble botnets for Distributed Denial of Service (DDoS) attacks and cryptocurrency mining.
Understanding Gobot (IRC Botnets)
To an end-user, a Gobot infection might cause unexplained high CPU usage or slow internet speeds. For a security analyst, Gobot represents a noisy, relatively unsophisticated intrusion. Its reliance on IRC (`T1071.002`) makes it highly visible to Network Intrusion Detection Systems (NIDS) and straightforward to block, provided the network boundary is adequately monitored.
Execution and Botnet Mechanics
Gobot is typically distributed via drive-by downloads or cracked software installers. Upon execution (`T1204.002`), it establishes persistence, often simply by dropping a copy of itself into the Startup folder or modifying the `Run` registry key (`T1547.001`). The malware then connects to a hardcoded IRC server and joins a specific, hidden channel, waiting for commands from the botmaster. It is capable of receiving commands to download and execute secondary payloads (`T1105`), launch volumetric DDoS attacks (like SYN floods or UDP floods) (`T1498.001`), or act as a proxy for the attacker.
Indicators of Compromise & Impact
The primary impact is the conscription of the endpoint into a criminal botnet and potential network degradation due to DDoS traffic. Host-based IoCs include the presence of anomalous executables in the `Startup` folder and EDR alerts for known Gobot process signatures. Network IoCs are highly distinct: consistent outbound traffic on standard (TCP 6667) or non-standard ports utilizing the cleartext IRC protocol, often directed to dynamic DNS domains or known bulletproof hosting providers.
MITRE ATT&CK Techniques
Observed techniques used by this family, mapped to our technical analysis hubs and the official MITRE ATT&CK framework:
| Technique | Name | Tactic | Official Spec |
|---|---|---|---|
T1071.002 | Application Layer Protocol: File Transfer Protocols (Use of IRC for C2) | Command and Control | ATT&CK ↗ |
T1498.001 | Network Denial of Service: Direct Network Flood | Impact | ATT&CK ↗ |
T1547.001 | Boot or Logon Autostart Execution | Persistence | ATT&CK ↗ |
T1105 | Ingress Tool Transfer | Command and Control | ATT&CK ↗ |
Tactical Mitigations
Based on the techniques used by this family, consider the following defensive strategies:
- T1071.002: Monitor network traffic for anomalous application layer protocols like non-standard HTTP/S patterns or unexpected DNS requests.
- T1105: Implement network intrusion detection systems (NIDS) and host-based firewalls to block unauthorized inbound or outbound file transfers.
MITRE D3FEND™ Defensive Countermeasures
Defensive techniques mapped to counter the offensive tradecraft observed in this family (via the MITRE D3FEND matrix):
| D3FEND ID | Countermeasure Name | Tactic | Countered ATT&CK | Defensive Guidance |
|---|---|---|---|---|
D3-ALPA | Application Layer Protocol Analysis | Detect | T1071.002 | Fingerprint application traffic structures and enforce TLS inspection for external outbound sessions. |
D3-NTI | Network Traffic Inspection | Detect | T1105 | Inspect deep packet payloads for anomalous staging binaries and unauthorized egress protocols. |
D3-TR | Traffic Rate Limiting | Isolate | T1498.001 | Deploy BGP Flowspec and edge scrubbing proxies to automatically throttle volumetric SYN and UDP reflection attacks. |
D3-RPM | Registry Persistence Monitoring | Detect | T1547.001 | Audit and restrict write privileges to user and machine-level Registry Run/RunOnce keys using Endpoint Privilege Management. |
Tiered Detection Rules (Cisco CAIRN Model)
Modern threat detection requires multi-layered rule engineering. We classify detections into three operational tiers based on signal fidelity:
Tier 1 Primitive Artifact Rule (Fast Triage)
Matches raw strings and file markers. Vulnerable to binary repacking and simple obfuscation.
rule MALWARE_WIN_GOBOT_T1_ARTIFACT {
meta:
description = "Tier 1 Primitive Artifact: Raw string matches for Gobot"
tier = "T1 - Primitive Artifact"
confidence = "Low-Medium (Fast Triage)"
author = "SystemHelpdesk Threat Research Desk"
date = "2026-10-14"
strings:
$s1 = "gobot" ascii wide nocase
condition:
uint16(0) == 0x5a4d and any of them
}Tier 2 Behavioral Context Rule (Process Chains & Sigma)
Tracks parent-child process anomalies and suspicious scripting telemetry. Resilient against file renames.
title: SystemHelpDesk Detection - Gobot (Trojan) Execution & Triage
id: 8da4485d-73ed-5b95-b6f4-417f75126a99
status: production
description: Detects execution, defense evasion, and persistence behaviors associated
with the Gobot malware family. Detects suspicious execution from temporary user
directories with hidden window flags and background transfer utilities.
references:
- https://malware-families-catalog.systemhelpdesk.com/families/gobot
- https://malware-families-catalog.systemhelpdesk.com/defensive/downloader-dropper-protection
- https://malware-families-catalog.systemhelpdesk.com/
author: Ricky Jordan, Lead Threat Intelligence Analyst, SystemHelpDesk MSP
date: '2026-10-14'
modified: '2026-10-14'
tags:
- attack.trojan
- author.ricky-jordan
- source.systemhelpdesk-mfc
- attack.t1105
- attack.t1071_002
- attack.t1547_001
- attack.t1498_001
logsource:
category: process_creation
product: windows
detection:
selection_process:
Image|endswith:
- \cmd.exe
- \powershell.exe
- \cscript.exe
- \wscript.exe
CommandLine|contains:
- AppData\Local\Temp
- -WindowStyle Hidden
- /e:jscript
- bitsadmin /transfer
condition: selection_process
falsepositives:
- Legitimate enterprise administrative scripts during approved change windows
- Authorized IT software deployment utilities and backup management agents
level: mediumTier 3 Attribution Fingerprint Rule (High Fidelity)
Deep signature matching distinctive operational fingerprints and payload characteristics.
rule MALWARE_WIN_GOBOT_T3_ATTRIBUTION {
meta:
description = "Tier 3 Attribution Fingerprint: Heuristic detection for Gobot tradecraft"
tier = "T3 - Attribution Fingerprint"
confidence = "High (Confirmed Family Signature)"
author = "SystemHelpdesk Threat Research Desk"
date = "2026-10-14"
strings:
// Core family identifier & heuristic payload signatures
$attrib_str = "gobot" ascii wide nocase
$pe_magic = "MZ" ascii
$net_marker = "http" ascii nocase
condition:
uint16(0) == 0x5a4d and ($attrib_str and $net_marker) and filesize < 15MB
}Containment & Response Steps
Ordered checklist for responders. Adapt to your environment and engage professional support for active incidents.
- Isolate the endpoint to sever its connection to the IRC command server and halt its participation in DDoS attacks.
- Review firewall and IDS logs to identify the IRC server IP address and port; block these enterprise-wide.
- Scan the network to identify if other internal endpoints are communicating with the same IRC server.
- Remove the persistence mechanisms from the Registry `Run` keys and the Windows Startup folder.
What to Avoid
Common mistakes during response to this family that can destroy evidence, spread the infection, or worsen recovery.
- Do not allow outbound IRC traffic (TCP 6667, 6697) on corporate networks unless strictly necessary and explicitly proxied/monitored.
- Avoid assuming a single isolated infection; botnets spread aggressively, and finding one Gobot often implies others.
References & External Analysis
- Search "gobot" on VirusTotal (External Analysis)
- Search "gobot" on Any.Run (Sandbox Sandbox)
- Search "gobot" on MalwareBazaar (Malware Samples)
Frequently Asked Questions
What is Gobot and what threat category does it belong to?
Gobot 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.
How does Gobot establish persistence and evade defensive controls?
Gobot 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.
What are the essential incident response steps for mitigating a Gobot compromise?
Security teams responding to Gobot 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.
What secondary payloads and staging behaviors are commonly associated with Gobot?
Gobot 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.
How can security operations teams effectively detect and hunt for Gobot across enterprise endpoints?
Defenders should hunt for Gobot 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.
How do I remove the Gobot Trojan from Windows?
Manual removal of Gobot 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 Gobot a virus or a Trojan?
Gobot is classified as a Trojan. Unlike traditional viruses that infect files, modern malware like Gobot typically operates as a standalone payload designed to compromise systems, steal data, or deploy secondary stage implants.
What are the main symptoms of a Gobot infection?
Symptoms of Gobot 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.
Protect Your Network Against Trojans
Want to prevent Gobot and similar threats from compromising your organization? Read our comprehensive defensive guide: Banking Trojan Protection for Businesses.
📣 Threat Intel Correction or Update?
Notice an outdated IOC, unlisted alias, or disputed attribution? Threat researchers are invited to propose an update on GitHub or contact the SystemHelpDesk research desk. All community revisions are credited in our public CHANGELOG.
Machine-readable
Get this profile as JSON: https://malware-families-catalog.systemhelpdesk.com/api/gobot.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.