Moleboxultra

Overview

HackTool:Win32/Moleboxultra refers to the detection of a specific commercial software protector and packer, known as MoleBox, which is frequently abused by malware authors. MoleBox is designed to encapsulate an application and all its data files into a single, encrypted executable (`T1027.002`). While legitimate developers use it for DRM and to prevent reverse engineering, attackers use it to hide the true signature and behavior of their malware from antivirus engines.

Understanding Moleboxultra (Packers and Obfuscators)
To an end-user, there is no visible impact. For a SOC analyst, a Moleboxultra detection implies that a highly obfuscated file has entered the environment. The AV engine successfully identified the *wrapper* (the MoleBox packer), but the *actual payload* hidden inside remains unknown until it is unpacked in memory or analyzed dynamically.

Execution and Evasion Mechanics
When a MoleBox-packed executable runs, it acts as a virtual file system. It decrypts the embedded payload directly into memory (`T1027.002`) and executes it without ever writing the unencrypted malicious code to the hard drive (`T1055`). This effectively blinds traditional, static antivirus scanners that rely on file hashes. The payload inside could be anything—from a simple Adware dropper to a devastating Ransomware encryptor.

Indicators of Compromise & Impact
The impact depends entirely on the hidden payload. Host-based IoCs require dynamic analysis. EDR tools will often flag the execution because the unpacking process involves suspicious memory allocations and execution patterns (e.g., a process dynamically allocating memory as `PAGE_EXECUTE_READWRITE` and jumping execution to it). Because MoleBox is a commercial tool, its stub often contains recognizable strings, which is how AV engines flag it heuristically.

MITRE ATT&CK Techniques

Observed techniques used by this family, mapped to the MITRE ATT&CK framework:

Generated Detections (Boilerplate)

These YARA and Sigma rules are auto-generated based on the family name and aliases. They must be heavily tuned before deployment in a production environment.

YARA Rule

rule MALWARE_WIN_MOLEBOXULTRA {
    meta:
        description = "Detects Moleboxultra (ransomware)"
        author = "SystemHelpdesk Boilerplate Generator"
        date = "2026-07-06"
    strings:
        $s1 = "moleboxultra" ascii wide nocase
    condition:
        uint16(0) == 0x5a4d and any of them
}

Sigma Rule

title: Suspicious Moleboxultra Activity
id: 9334462e7487f8e166c6375bcff8da63
status: experimental
description: Detects generic indicators of the moleboxultra malware family.
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith:
            - '\cmd.exe'
            - '\powershell.exe'
        CommandLine|contains:
            - "*moleboxultra*"
    condition: selection
level: medium

Containment & Response Steps

Ordered checklist for responders. Adapt to your environment and engage professional support for active incidents.

1. Ensure the file flagged as Moleboxultra is quarantined and cannot be executed.
2. Submit the quarantined file to a dynamic malware analysis sandbox (like Cuckoo or Any.Run); the sandbox will capture the payload once it unpacks in memory.
3. If the file executed before quarantine, assume the endpoint is compromised and perform a full forensic review of the host's memory.
4. Review email filtering rules if the packed file was delivered via a phishing attachment.

What to Avoid

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

1. Do not dismiss the alert as a 'False Positive' just because MoleBox is a commercial tool; its presence in a non-developer environment is highly suspicious.
2. Avoid attempting to manually reverse engineer the file unless you have specific expertise in unpacking commercial protectors.

References & External Analysis

• Search "moleboxultra" on VirusTotal (External Analysis)

Frequently Asked Questions

Related Families (Category: ransomware)

Explore other malware families in the same category:

• Hamaetot
• Thanatos
• Specx
• Sankei
• Evillocker

Machine-readable

Get this profile as JSON: https://jordan123234-malware-families-explorer.static.hf.space/api/moleboxultra.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.