Trainer

Overview

Executive Summary

Infection Vector and Technical Capabilities

• The Distraction (Game Modification): The application may actually function as advertised, utilizing Windows APIs like `WriteProcessMemory` to patch the game's execution in RAM. This serves as a distraction, keeping the user satisfied and unaware of the background activity.
• The Payload (Silent Dropping): While the game is being patched, the Trainer silently extracts a hidden, secondary executable (the true malware payload) to a temporary directory and executes it.
• Typical Payloads: Weaponized trainers are most frequently bundled with Info Stealers (like RedLine or Raccoon Stealer) to harvest game account credentials, discord tokens, and cryptocurrency wallets, or Cryptominers to hijack the victim's high-end gaming hardware.

Threat Assessment

Incident Response and Remediation

• Contextual Verification: Identify the specific executable flagged as a Trainer. The primary concern is not the cheat tool itself, but the secondary payload it likely dropped.
• Deep Anti-Malware Sweep: Run a comprehensive, full-system scan using an enterprise EDR/AV solution to locate the hidden info-stealers, rootkits, or cryptominers that were silently installed alongside the Trainer.
• Credential Reset: Because Info Stealers are the most common payload bundled with these tools, immediately mandate a password reset for all corporate credentials used on that endpoint, and strongly advise the user to secure their personal accounts.

Known aliases

Threat reports may refer to this family under multiple names:

• HackTool.Trainer
• Riskware.GameHack
• Trojan.Dropper.Trainer

MITRE ATT&CK Techniques

Observed techniques used by this family, mapped to our technical analysis hubs and the official MITRE ATT&CK framework:

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.

MITRE D3FEND™ Defensive Countermeasures

Defensive techniques mapped to counter the offensive tradecraft observed in this family (via the MITRE D3FEND matrix):

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:

rule MALWARE_WIN_TRAINER_T1_ARTIFACT {
    meta:
        description = "Tier 1 Primitive Artifact: Raw string matches for Trainer"
        tier = "T1 - Primitive Artifact"
        confidence = "Low-Medium (Fast Triage)"
        author = "SystemHelpdesk Threat Research Desk"
        date = "2026-10-14"
    strings:
        $s1 = "trainer" ascii wide nocase
        $s2 = "hacktool.trainer" ascii wide nocase
        $s3 = "riskware.gamehack" ascii wide nocase
        $s4 = "trojan.dropper.trainer" ascii wide nocase
    condition:
        uint16(0) == 0x5a4d and any of them
}

title: SystemHelpDesk Detection - Trainer (Ransomware) Execution & Triage
id: e50f5f92-c287-5821-80c4-a788f46cccd2
status: production
description: Detects execution, defense evasion, and persistence behaviors associated
  with the Trainer malware family. Detects volume shadow copy deletion, boot status
  tampering, and recovery inhibition characteristic of modern ransomware operations.
references:
- https://malware-families-catalog.systemhelpdesk.com/families/trainer
- https://malware-families-catalog.systemhelpdesk.com/defensive/ransomware-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.ransomware
- author.ricky-jordan
- source.systemhelpdesk-mfc
- attack.t1204_002
- attack.t1055
- attack.t1056_001
logsource:
  category: process_creation
  product: windows
detection:
  selection_process:
    Image|endswith:
    - \vssadmin.exe
    - \wmic.exe
    - \wbadmin.exe
    - \bcdedit.exe
    CommandLine|contains:
    - delete shadows
    - shadowcopy delete
    - resize shadowstorage
    - recoveryenabled no
    - ignoreallfailures
  condition: selection_process
falsepositives:
- Legitimate enterprise administrative scripts during approved change windows
- Authorized IT software deployment utilities and backup management agents
level: critical

rule MALWARE_WIN_TRAINER_T3_ATTRIBUTION {
    meta:
        description = "Tier 3 Attribution Fingerprint: Heuristic detection for Trainer 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 = "trainer" 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.

1. Immediately isolate affected host(s) from the internal network (disconnect physical Ethernet and disable Wi-Fi/Bluetooth) to prevent Trainer from spreading laterally or encrypting network-attached storage (NAS) and shared SMB volumes.
2. Preserve volatile system memory (RAM capture) on a representative endpoint before attempting a reboot or power-down, as Trainer symmetric encryption keys or uncompiled payload components may still reside in memory.
3. Audit process execution logs and terminate active scripting interpreters (e.g. PowerShell, CMD, WScript) or commands executing 'vssadmin.exe delete shadows' or 'wbadmin' used by Trainer to inhibit recovery.
4. Investigate the initial compromise vector (such as exposed RDP instances, spearphishing attachments, or vulnerable edge gateways) and enforce an immediate credential reset for all compromised Active Directory accounts.
5. Restore critical assets and databases exclusively from verified, air-gapped, or immutable offline backups once the Trainer binary and related persistence hooks are eradicated.

What to Avoid

Common mistakes during response to this family that can destroy evidence, spread the infection, or worsen recovery.

1. Do not restart or power cycle infected systems prematurely; doing so destroys volatile RAM encryption keys and may trigger bootloader locking logic embedded in Trainer.
2. Avoid negotiating or paying the extortion demand without prior forensic evaluation and consultation with incident response specialists, as payment does not guarantee data recovery.
3. Do not connect clean backup drives or external storage to the affected network until Trainer eradication is completely verified.

References & External Analysis

• Search "trainer" on VirusTotal (External Analysis)
• Search "trainer" on Any.Run (Sandbox Sandbox)
• Search "trainer" on MalwareBazaar (Malware Samples)

Frequently Asked Questions

Related Threats (Category: Ransomware)

Explore other documented threats in the same operational category:

• Snoload
• Mresmon
• Cryptowall
• Genericrxdt
• Tyhos
• Hamer
• Denes
• Blueh

Machine-readable

Get this profile as JSON: https://malware-families-catalog.systemhelpdesk.com/api/trainer.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.