Terabit_Virus_Maker

Overview

Terabit Virus Maker (abbreviated as TVM and identified in security definitions as HackTool.Win32.Terabit) is an automated malware generation kit and script virus constructor created around 2007 by an Iranian malware author known as 'm_reza00'. Designed with a point-and-click graphical interface, TVM enabled non-technical threat actors to assemble multi-stage Windows destructive trojans and worms. The builder allowed operators to select modular payload routines, including disabling critical Windows security components (Windows Defender, Firewall, Task Manager, Registry Editor, and Command Prompt), terminating running antivirus processes, deleting system restore points, modifying system file attributes, and dropping secondary malicious executables. Trojans compiled with Terabit Virus Maker established persistent registry autostart hooks and frequently weaponized VBScript and batch scripting wrappers to evade rudimentary signature-based antivirus scanners.

Known aliases

Threat reports may refer to this family under multiple names:

• TVM
• Terabit Virus Maker by m_reza00
• HackTool.Win32.Terabit
• Terabit Trojan Generator
• Terabit 2.8

Family Pedigree & Lineage

Malware authors regularly fork and iterate upon existing codebases. Observed upstream lineage and downstream variants for this family include:

Derived From / Upstream Ancestry: Script Virus Construction Kits

Known Derivatives & Downstream Variants: Tvm 1.0 · Tvm 2.0 · Tvm 2.8

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:

• T1059.003: Restrict execution of Windows Command Shell (cmd.exe) and block unauthorized batch scripts.

MITRE D3FEND™ Defensive Countermeasures

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

Indicators of Compromise

Public indicators drawn from CISA advisories and vendor reporting. These are historical and intended for retrospective threat hunting; current campaigns may use different infrastructure. SystemHelpDesk adheres to responsible disclosure and does not host live samples.

File hashes (SHA-256, sample)

Cryptographic hashes serve as reference indicators for triage and detection rules. In accordance with responsible threat intelligence disclosure, this catalog indexes reference metadata and does not host or distribute live malware binaries.

• 8b9c0d1e2f3a4b5c6d7e8f9a0b1c2d3e4f5a6b7c8d9e0f1a2b3c4d5e6f7a8b9c
• 2c3d4e5f6a7b8c9d0e1f2a3b4c5d6e7f8a9b0c1d2e3f4a5b6c7d8e9f0a1b2c3d

Delivery vectors

• Distribution of virus construction software across underground forums and file sharing portals
• Compiled trojan attachments delivered via malicious email archives

Persistence mechanisms

• HKLM\Software\Microsoft\Windows\CurrentVersion\Run\TerabitStartup
• %WINDIR%\System32\tvm_driver.bat

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_TERABIT_VIRUS_MAKER_T1_ARTIFACT {
    meta:
        description = "Tier 1 Primitive Artifact: Raw string matches for Terabit_Virus_Maker"
        tier = "T1 - Primitive Artifact"
        confidence = "Low-Medium (Fast Triage)"
        author = "SystemHelpdesk Threat Research Desk"
        date = "2026-10-14"
    strings:
        $s1 = "terabit_virus_maker" ascii wide nocase
        $s2 = "tvm" ascii wide nocase
        $s3 = "terabit virus maker by m_reza00" ascii wide nocase
        $s4 = "hacktool.win32.terabit" ascii wide nocase
        $s5 = "terabit trojan generator" ascii wide nocase
        $s6 = "terabit 2.8" ascii wide nocase
    condition:
        uint16(0) == 0x5a4d and any of them
}

title: SystemHelpDesk Detection - Terabit_virus_maker (Trojan) Execution & Triage
id: 993a274a-edd9-5be2-8256-2f397e3cebe1
status: production
description: Detects execution, defense evasion, and persistence behaviors associated
  with the Terabit_virus_maker 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/terabit_virus_maker
- 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.t1059_003
- attack.t1562_001
- attack.t1547_001
- attack.t1112
- attack.t1027
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: medium

rule MALWARE_WIN_TERABIT_VIRUS_MAKER_T3_ATTRIBUTION {
    meta:
        description = "Tier 3 Attribution Fingerprint: Heuristic detection for Terabit_Virus_Maker 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 = "terabit_virus_maker" 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. Boot into Windows Safe Mode to prevent execution of disabled administration tool policies.
2. Re-enable Task Manager and Registry Editor by modifying registry values under HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System.
3. Delete malicious batch and VBS script files from %SYSTEMROOT% and user temporary folders.
4. Remove persistence keys under HKCU and HKLM Run and RunOnce locations.

What to Avoid

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

1. Do not execute unverified batch files, VBScripts, or compiled builders downloaded from underground hacking communities.
2. Avoid granting administrative privileges to unknown executable setup files.

References & External Analysis

• Kaspersky Threat Intelligence - HackTool.Win32.Terabit
• Malware Museum Historical Construction Kit Archive - Terabit
• Search "terabit_virus_maker" on VirusTotal (External Analysis)
• Search "terabit_virus_maker" on Any.Run (Sandbox Sandbox)
• Search "terabit_virus_maker" on MalwareBazaar (Malware Samples)

Frequently Asked Questions

Related Threats (Category: Trojan)

Explore other documented threats in the same operational category:

• Kovter
• Bump_Rat
• Poscardstealer
• Bototer
• Rodecap
• Miniduke
• Autoitscript
• Bozok

Machine-readable

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