Encryptpe

Category: ransomware · Aliases: Packed.EncryptPE, Suspicious.Packer, Win32/Packed.EncryptPE · Sample count (EMBER 2018): 1 · Enrichment: insufficient_information · Updated: 2026-07-01T17:31:23Z

Category: RansomwareActor: Unknown / CybercriminalIndustry: Global / OpportunisticMotivation: Opportunistic

Overview

Executive Summary

EncryptPE is not inherently a malware family; rather, it is a legitimate commercial software protector and executable packer. However, in the context of threat intelligence, "EncryptPE" (or detections referencing it) strongly indicates that a malware author has utilized this specific packing tool to encrypt and obfuscate their malicious payload in order to evade static antivirus signatures and hinder reverse engineering efforts.

Technical Capabilities and Abuse

Software developers use tools like EncryptPE to protect their intellectual property from piracy. Malware authors abuse this exact same functionality to protect their malicious code from security researchers and AV engines. When a file is packed with EncryptPE, it exhibits several key behaviors:

Static Evasion: The original malicious executable (`.exe` or `.dll`) is compressed and heavily encrypted. Traditional, signature-based antivirus scanners cannot read the underlying malicious code because it looks like randomized data on disk.
Memory Unpacking (Stub Execution): When the user executes the packed file, a small, unencrypted portion of code (the "stub") runs first. This stub allocates memory, decrypts the true malicious payload into that memory space, and then passes execution control to it.
Anti-Debugging/Anti-VM: Commercial packers like EncryptPE often include advanced anti-analysis features. The stub will actively check if it is running inside a debugger (like x64dbg) or a Virtual Machine (like VMware or VirtualBox). If analysis tools are detected, the stub will terminate execution to protect the payload.

Threat Assessment

If an enterprise security solution flags a file based on the presence of EncryptPE (and the file is not a known, internally developed application), it should be treated with extreme suspicion. The use of commercial packers is a hallmark of sophisticated malware campaigns attempting to bypass perimeter defenses.

Incident Response and Remediation

Dynamic Analysis (Sandboxing): Static analysis is useless against EncryptPE. The file must be submitted to a secure, dynamic malware sandbox (like Cuckoo or ANY.RUN) that is hardened against anti-VM techniques. The sandbox will execute the file and monitor its behavior *after* it unpacks in memory.
Memory Forensics: For incident response on a live host, volatile memory (RAM) analysis is required. Analysts must dump the process memory to extract the unencrypted payload for further reverse engineering and IoC extraction.
Endpoint Sweeps: Once the true nature of the unpacked payload is understood (e.g., whether it is a banking trojan or ransomware), proceed with standard eradication procedures, including network isolation, process termination, and full system remediation.

Known aliases

Threat reports may refer to this family under multiple names:

MITRE ATT&CK Techniques

This family has been observed using the following ATT&CK techniques: T1027.002 T1140 T1497

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_ENCRYPTPE {
    meta:
        description = "Detects Encryptpe (ransomware)"
        author = "SystemHelpdesk Boilerplate Generator"
        date = "2026-07-06"
    strings:
        $s1 = "encryptpe" ascii wide nocase
        $s2 = "packed.encryptpe" ascii wide nocase
        $s3 = "suspicious.packer" ascii wide nocase
        $s4 = "win32/packed.encryptpe" ascii wide nocase
    condition:
        uint16(0) == 0x5a4d and any of them
}

Sigma Rule

title: Suspicious Encryptpe Activity
id: 3a1b02ea1d8da22abdb7ca20fd140ac4
status: experimental
description: Detects generic indicators of the encryptpe malware family.
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith:
            - '\cmd.exe'
            - '\powershell.exe'
        CommandLine|contains:
            - "*encryptpe*"
            - "*packed.encryptpe*"
            - "*suspicious.packer*"
            - "*win32/packed.encryptpe*"
    condition: selection
level: medium

References & External Analysis

Search "encryptpe" on VirusTotal (External Analysis)

Frequently Asked Questions

How do I remove the Encryptpe Ransomware from Windows?

Manual removal of Encryptpe is highly discouraged as it may leave persistence mechanisms intact. We recommend disconnecting the device from the internet and utilizing a professional incident response service or enterprise-grade EDR software to conduct a full forensic sweep.

Is Encryptpe a virus or a Ransomware?

Encryptpe is classified as a Ransomware. Unlike traditional viruses that infect files, modern malware like Encryptpe typically operates as a standalone payload designed to compromise systems, steal data, or deploy secondary stage implants.

What are the main symptoms of a Encryptpe infection?

Symptoms of Encryptpe can include unexpected system slowness, unauthorized outbound network traffic to unknown IP addresses, disabled security software, and suspicious background processes running from AppData or Temp directories.

Related Families (Category: ransomware)

Explore other malware families in the same category:

Protect Your Network Against Ransomwares

Want to prevent Encryptpe and similar threats from compromising your organization? Read our comprehensive defensive guide: Ransomware Protection Guide.

Need help with an active incident? Published by the SystemHelpdesk team.

Machine-readable

Get this profile as JSON: https://jordanricky1604-ship-it.github.io/malware-families-catalog/api/encryptpe.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.