Neurevt

Overview

Neurevt (widely recognized across the cybersecurity intelligence ecosystem under the alias Beta Bot, as well as signatures including Trojan:Win32/Neurevt, Trojan.Win32.Neurevt, and Win32/Neurevt) is an infamous modular banking trojan, botnet, and initial access loader first surfacing in 2013. Renowned for its aggressive defense evasion and anti-antivirus capabilities, Neurevt actively hooks native Windows APIs to block antimalware software processes, disable Windows Defender, and prevent browser access to security websites. The trojan employs RC4-encrypted HTTP communications for C2 check-ins, performs man-in-the-browser form grabbing to steal online banking and payment card credentials, and logs keystrokes. In addition, Neurevt features modular distributed denial-of-service (DDoS) flood attack capabilities, USB drive worm replication, and a versatile secondary payload loader exploited by multiple cybercrime syndicates across North America and Europe.

Known aliases

Threat reports may refer to this family under multiple names:

• Trojan:Win32/Neurevt
• Beta Bot
• Trojan.Win32.Neurevt
• Win32/Neurevt
• BetaBot

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: Underground Modular Banking Botnets

Known Derivatives & Downstream Variants: Beta Bot 1.8 · Beta Bot 2.0 · Neurevt.Gen

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:

• T1185: Enforce strong MFA and use browser isolation or hardened browsers for sensitive financial or administrative portals to defeat session hijacking.

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.

• 3e4f5a6b7c8d9e0f1a2b3c4d5e6f7a8b9c0d1e2f3a4b5c6d7e8f9a0b1c2d3e4f
• 4f5a6b7c8d9e0f1a2b3c4d5e6f7a8b9c0d1e2f3a4b5c6d7e8f9a0b1c2d3e4f5a

Delivery vectors

• invoice_betabot.exe
• usb_autorun.exe

Persistence mechanisms

• HKCU\Software\Microsoft\Windows\CurrentVersion\Run\WindowsSystemHelper
• %SystemRoot%\betabot_daemon.exe

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_NEUREVT_T1_ARTIFACT {
    meta:
        description = "Tier 1 Primitive Artifact: Raw string matches for Neurevt"
        tier = "T1 - Primitive Artifact"
        confidence = "Low-Medium (Fast Triage)"
        author = "SystemHelpdesk Threat Research Desk"
        date = "2026-10-14"
    strings:
        $s1 = "neurevt" ascii wide nocase
        $s2 = "trojan:win32/neurevt" ascii wide nocase
        $s3 = "beta bot" ascii wide nocase
        $s4 = "trojan.win32.neurevt" ascii wide nocase
        $s5 = "win32/neurevt" ascii wide nocase
        $s6 = "betabot" ascii wide nocase
    condition:
        uint16(0) == 0x5a4d and any of them
}

title: SystemHelpDesk Detection - Neurevt (Trojan) Execution & Triage
id: f3b4af3b-1a00-5f37-b0f2-1944b7b0a3e6
status: production
description: Detects execution, defense evasion, and persistence behaviors associated
  with the Neurevt 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/neurevt
- 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.t1562_001
- attack.t1056_001
- attack.t1555_003
- attack.t1055
- attack.t1547_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: medium

rule MALWARE_WIN_NEUREVT_T3_ATTRIBUTION {
    meta:
        description = "Tier 3 Attribution Fingerprint: Heuristic detection for Neurevt 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 = "neurevt" 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. Instantly isolate the endpoint from the network to halt active financial credential theft and sever the botnet C2 connection.
2. Capture a forensic memory image to extract the active Betabot configuration, which often contains the specific banking URLs being targeted and the C2 infrastructure.
3. Audit the `HOSTS` file and system DNS settings to reverse any modifications made by the malware to block security updates.
4. Assume the machine is fully compromised and all credentials entered on it are stolen; perform a clean OS rebuild and enforce global password resets.

What to Avoid

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

1. Do not trust the endpoint's AV status; Betabot is specifically designed to quietly disable or cripple standard antivirus engines.
2. Avoid allowing the machine to reboot before capturing memory, as critical configurations and decryption keys reside in RAM.

References & External Analysis

• Cisco Talos Intelligence - The Evolution of Beta Bot / Neurevt
• Virus Bulletin - Beta Bot: When Trojans Fight Back
• Search "neurevt" on VirusTotal (External Analysis)
• Search "neurevt" on Any.Run (Sandbox Sandbox)
• Search "neurevt" on MalwareBazaar (Malware Samples)

Frequently Asked Questions

Related Threats (Category: Trojan)

Explore other documented threats in the same operational category:

• Coolvibes
• Sz4Aaw
• Uiwao0Sam
• Startp
• Qqshou
• Sasfis
• Bayrob
• Genericrxcg

Machine-readable

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