Noobyprotect

Overview

Noobyprotect (cataloged in threat telemetry under signatures including SoftwareBundler:Win32/Noobyprotect, Trojan.MalPack.NP, and PUA:Win32/NoobyProtect) is a commercial and underground software protector, crypter, and runtime packer active since 2013. Designed to compress, encrypt, and obfuscate executable binaries, Noobyprotect is heavily abused by cybercriminals to armor secondary malicious payloads—including trojans, info-stealers, ransomware droppers, and software bundlers—against static antivirus detection. Executables packed with Noobyprotect exhibit high Shannon entropy across their code sections and feature heavily modified PE headers. Upon launch, the Noobyprotect stub executes extensive pre-flight environment checks, inspecting system memory and CPU registers for debuggers (x64dbg, OllyDbg) and virtualization artifacts (VMware, VirtualBox, sandbox environments). If an analysis sandbox is detected, execution immediately halts. Otherwise, the stub dynamically allocates virtual memory, unpacks and decrypts the embedded payload directly in RAM, and transfers execution control without writing raw payload code to disk.

Known aliases

Threat reports may refer to this family under multiple names:

• SoftwareBundler:Win32/Noobyprotect
• Trojan.MalPack.NP
• PUA:Win32/NoobyProtect
• Win32.Packed.NoobyProtect
• Packer:Win32/Noobyprotect

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: Runtime Pe Crypter Architecture · Anti-Analysis Packer Stub

Known Derivatives & Downstream Variants: Noobyprotect.A · Noobyprotect.Stub · Malpack.Np

MITRE ATT&CK Techniques

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

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.

• e5b7d9f1a3c5e7b9d1f3a5c7e9b1d3f5a7c9e1b3d5f7a9c1e3b5d7f9a1c3e5b7
• f6a8b0c2d4e6f8a0b2c4d6e8f0a2b4c6d8e0f2a4c6e8b0d2f4a6c8e0b2d4f6a8

Delivery vectors

• Armored packaging for third-party freeware, cracked games, and utility downloads
• Malicious email attachments wrapping credential stealer and trojan payloads

Persistence mechanisms

• Dependent on unpacked payload architecture
• Temporary unpacked runtime stubs in %TEMP%

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_NOOBYPROTECT_T1_ARTIFACT {
    meta:
        description = "Tier 1 Primitive Artifact: Raw string matches for Noobyprotect"
        tier = "T1 - Primitive Artifact"
        confidence = "Low-Medium (Fast Triage)"
        author = "SystemHelpdesk Threat Research Desk"
        date = "2026-10-14"
    strings:
        $s1 = "noobyprotect" ascii wide nocase
        $s2 = "softwarebundler:win32/noobyprotect" ascii wide nocase
        $s3 = "trojan.malpack.np" ascii wide nocase
        $s4 = "pua:win32/noobyprotect" ascii wide nocase
        $s5 = "win32.packed.noobyprotect" ascii wide nocase
        $s6 = "packer:win32/noobyprotect" ascii wide nocase
    condition:
        uint16(0) == 0x5a4d and any of them
}

title: SystemHelpDesk Detection - Noobyprotect (Packer) Execution & Triage
id: 57d38d70-1dc2-54cd-bd4e-672621096831
status: production
description: Detects execution, defense evasion, and persistence behaviors associated
  with the Noobyprotect 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/noobyprotect
- 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.packer
- author.ricky-jordan
- source.systemhelpdesk-mfc
- attack.t1027_002
- attack.t1497_001
- attack.t1620
- attack.t1055
- attack.t1129
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_NOOBYPROTECT_T3_ATTRIBUTION {
    meta:
        description = "Tier 3 Attribution Fingerprint: Heuristic detection for Noobyprotect 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 = "noobyprotect" 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. Quarantine any executable flagged with high section entropy or Noobyprotect packer signatures immediately.
2. Submit the packed sample to an advanced dynamic sandbox to observe post-unpacking process creation and dropped artifacts.
3. Inspect memory allocations in running processes for unmapped executable memory blocks indicative of in-memory unpacking.
4. Deploy endpoint behavioral rules to block execution of unrecognized binaries exhibiting debugger-evasion calls.

What to Avoid

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

1. Do not rely solely on static antivirus file hashes, as packed binaries exhibit unique hashes with each build iteration.
2. Avoid running packed executables on physical administrative endpoints without prior sandbox evaluation.

References & External Analysis

• Microsoft Defender Security Intelligence - SoftwareBundler:Win32/Noobyprotect
• Malwarebytes Labs Threat Intelligence - Trojan.MalPack.NP
• Search "noobyprotect" on VirusTotal (External Analysis)
• Search "noobyprotect" on Any.Run (Sandbox Sandbox)
• Search "noobyprotect" on MalwareBazaar (Malware Samples)

Frequently Asked Questions

Related Threats (Category: Packer)

Explore other documented threats in the same operational category:

• Enigmaprotector
• Vbkryjetor
• Genkryptik
• Autoit
• Confuser
• Multipacked
• Packedent
• Pakes

Machine-readable

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