Siloscape Malware: Complete Technical Analysis, Indicators Of Compromise (IOCs), MITRE ATT&

  Category:  MALWARE | 11th July 2026 | Author:  CSI'S TEAM

Introduction

Siloscape Is A Sophisticated Cloud-focused Malware First Publicly Disclosed In 2021. Unlike Traditional Ransomware Or Banking Trojans, Siloscape Is Designed To Compromise Windows-based Kubernetes Container Environments By Escaping Containers And Gaining Access To The Underlying Host Operating System. Once On The Host, It Establishes Communication With Attacker-controlled Infrastructure Through The Tor Network And Enables Remote Execution Of Malicious Payloads, Making It A Powerful Backdoor For Cloud-native Environments.

The Malware Demonstrates Advanced Capabilities, Including Container Escape, Privilege Escalation, API Abuse, Stealth Techniques, And Anti-forensics. Siloscape Primarily Targets Misconfigured Kubernetes Clusters Running Windows Containers And Can Be Used To Deploy Additional Malware Such As Cryptocurrency Miners, Ransomware, Information Stealers, Or Remote Access Tools.

Unlike File-encrypting Malware, Siloscape Focuses On Maintaining Persistent Access And Facilitating Post-exploitation Activities. Organizations Operating Containerized Workloads Should Implement Strong Kubernetes Security Practices, Restrict Container Privileges, Continuously Monitor Workloads, And Regularly Update Their Infrastructure.

Siloscape Malware Overview

How Siloscape Works?

Siloscape Follows A Multi-stage Attack Process Designed For Cloud-native Environments.

Stage 1 – Initial Access

The Attacker Gains Access Through:

• Vulnerable Windows Containers

• Misconfigured Kubernetes Deployments

• Exposed Services

• Weak Administrative Credentials

Stage 2 – Container Escape

Instead Of Remaining Inside The Compromised Container, Siloscape Abuses Windows Container Mechanisms To Escape Into The Host Operating System.

Stage 3 – Host Compromise

After Escaping, The Malware:

• Gains Elevated Privileges

• Executes Commands

• Accesses Sensitive Host Resources

• Enumerates Running Services

Stage 4 – Command And Control

Siloscape Connects To Attacker Infrastructure Through The Tor Anonymity Network.

Capabilities Include:

• Remote Command Execution

• Payload Download

• System Monitoring

• Data Collection

Stage 5 – Payload Deployment

The Attackers May Deploy:

• Cryptocurrency Miners

• Ransomware

• Information Stealers

• Credential Theft Tools

• Remote Access Trojans (RATs)

Infection Vectors

Common Infection Methods Include:

• Misconfigured Kubernetes Clusters

• Vulnerable Windows Containers

• Internet-exposed Services

• Weak Administrator Credentials

• Privilege Misconfigurations

• Supply-chain Attacks

• Exploited Software Vulnerabilities

• Compromised Container Images

• Remote Code Execution Vulnerabilities

Infected Files

Unlike Ransomware, Siloscape Does not Primarily Encrypt User Files. Instead, It Installs Malicious Binaries, Creates Persistence Mechanisms, And Downloads Additional Payloads.

Commonly Affected Files Include:

Executables

• .exe

• .dll

• .sys

• .bat

• .cmd

Configuration Files

• .json

• .yaml

• .yml

• .xml

• .config

Log Files

• .log

• .evtx

Kubernetes Configuration

• kubeconfig Files

• Cluster Configuration Files

• Service Account Tokens

Scripts

• .ps1

• .vbs

• .js

Credential Files

• Cached Credentials

• Windows Credential Stores

• Kubernetes Secrets

• API Tokens

File Extensions

Siloscape Is not A File-encrypting Malware, So It Does not Append A Unique File Extension To Victim Files. Instead, It May Create Or Drop Malicious Executable Files And Scripts Using Standard Windows Extensions Such As:

• .exe

• .dll

• .ps1

• .bat

• .cmd

Operating Systems Affected

Siloscape Specifically Targets Microsoft Windows Environments That Host Windows Containers.

Supported Victim Operating Systems Include:

• Windows Server 2016

• Windows Server 2019

• Windows Server 2022

• Windows 10

• Windows 11 (if Configured For Windows Containers)

The Malware Has Been Observed Targeting Windows Container Infrastructure Rather Than Linux-based Kubernetes Nodes.

Browsers Potentially Affected

Siloscape Does Not Specifically Attack Web Browsers. However, If Follow-on Malware Is Deployed, Browser Data May Become A Target.

Potentially Affected Browsers Include:

• Google Chrome

• Microsoft Edge

• Mozilla Firefox

• Brave

• Opera

Possible Browser-related Data Exposed By Secondary Payloads:

• Saved Passwords

• Cookies

• Authentication Tokens

• Browser History

• Stored Sessions

• Autofill Information

• Bookmarks

Browser Extensions

There Is No Public Evidence That Siloscape Directly Targets Browser Extensions. However, If Credential-stealing Payloads Are Deployed After Compromise, Extension-related Data Stored In Browser Profiles May Be Accessed.

Potential Browser Extension Data Includes:

• Google Chrome Extensions

• Microsoft Edge Extensions

• Mozilla Firefox Add-ons

• Brave Extensions

• Opera Extensions

Countries Affected

Siloscape Is Considered An Opportunistic Threat Targeting Exposed Cloud Environments Rather Than Specific Countries.

Public Reporting Has Identified Victims And Exposed Systems In Multiple Regions, Including:

• United States

• Canada

• United Kingdom

• Germany

• France

• Netherlands

• India

• Singapore

• Australia

• Japan

• South Korea

• Brazil

The Geographic Distribution Depends Largely On The Exposure Of Vulnerable Windows Kubernetes Deployments.

Computer Systems Targeted

Primary Targets Include:

• Windows Kubernetes Nodes

• Windows Containers

• Kubernetes Clusters

• Cloud Virtual Machines

• Azure Kubernetes Service (AKS) With Windows Nodes

• On-premises Kubernetes Environments

• Enterprise Windows Servers

• Hybrid Cloud Deployments

• Cloud-native Infrastructure

• DevOps Environments

Indicators Of Compromise (IOCs)

The Following IOC Categories Are Commonly Associated With Siloscape Investigations. Actual Values Such As Hashes, Domains, IP Addresses, Or Mutex Names Vary By Sample And Should Be Obtained From Trusted Threat Intelligence For A Specific Campaign.

File Indicators

• Suspicious Executables In Temporary Directories

• Unexpected Binaries Within Container File Systems

• PowerShell Scripts Created Without Authorization

• New Scheduled Task Or Service Binaries

Common Directories To Inspect Include:

• %Temp%

• %AppData%

• %ProgramData%

• %SystemRoot%\Temp

Registry Indicators

Potential Persistence Locations:

HKCU\Software\Microsoft\Windows\CurrentVersion\Run

HKLM\Software\Microsoft\Windows\CurrentVersion\Run

Process Indicators

Suspicious Behavior Includes:

• Unusual PowerShell Execution

• Container Process Spawning Host Processes

• Execution Of cmd.exe From Container Contexts

• Unexpected Use Of rundll32.exe

• New Windows Services

• Remote Command Execution

Network Indicators

Potential Activity Includes:

• Outbound Tor Traffic

• Communication With Command-and-control Infrastructure

• DNS Requests To Suspicious Domains

• Download Of Secondary Payloads

• Encrypted HTTPS Connections To Attacker-controlled Servers

Behavioral Indicators

• Container Escape Attempts

• Privilege Escalation

• Kubernetes API Enumeration

• Host Process Creation From Container Context

• Persistence Through Scheduled Tasks Or Registry Keys

• Deployment Of Additional Malware

MITRE ATT&CK Techniques

The Following ATT&CK Techniques Are Commonly Associated With Siloscape Behavior.

Detection Rules

Sigma Rule – Suspicious PowerShell Execution

title: Siloscape Suspicious PowerShell

Id: Siloscape-powershell

Status: Experimental

Logsource:
  Product: Windows
  Category: Process_creation

Detection:
  Selection:
    Image|endswith:
      - '\powershell.exe'

    CommandLine|contains:
      - Invoke-WebRequest
      - DownloadString
      - EncodedCommand

Condition: Selection

Level: High

Sigma Rule – Container Host Process

title: Windows Container Host Escape Activity

Status: Experimental

Logsource:
  Product: Windows
  Category: Process_creation

Detection:
  Selection:
    ParentImage|contains:
      - Container

    Image|endswith:
      - '\cmd.exe'
      - '\powershell.exe'

Condition: Selection

Level: High

Sigma Rule – Scheduled Task Persistence

title: Suspicious Scheduled Task Creation

Status: Stable

Logsource:
  Product: Windows
  Category: Process_creation

Detection:
  Selection:
    CommandLine|contains:
      - Schtasks
      - /create

Condition: Selection

Level: Medium

YARA Rule

rule Siloscape_Generic
{
    Meta:
        Description = "Generic Detection For Siloscape-like Malware"

    Strings:
        $a = "tor"
        $b = "powershell"
        $c = "cmd.exe"
        $d = "CreateProcess"

    Condition:
        Any Of Them
}

Windows Event Detection

Monitor The Following Windows Event IDs:

• Event ID 4688 – Process Creation

• Event ID 4698 – Scheduled Task Creation

• Event ID 7045 – Service Installation

• Event ID 4624 – Successful Logon

• Event ID 4625 – Failed Logon

• Event ID 5156 – Windows Filtering Platform Connection

• Event ID 4104 – PowerShell Script Block Logging

Alert On:

• Unexpected PowerShell Downloads

• New Services Installed

• Registry Run Key Modifications

• Tor-related Outbound Connections

• Host Process Creation From Containerized Environments

• Unauthorized Scheduled Task Creation

Prevention And Mitigation

Organizations Can Reduce The Risk Of Siloscape Infections By Implementing The Following Security Controls:

• Keep Windows Server And Kubernetes Components Fully Patched.

• Restrict Container Privileges And Avoid Running Privileged Windows Containers.

• Apply The Principle Of Least Privilege To Kubernetes Service Accounts.

• Use Trusted And Regularly Scanned Container Images.

• Enable Windows Defender, Endpoint Detection And Response (EDR), And Container Runtime Monitoring.

• Monitor Kubernetes API Activity And Container Escape Attempts.

• Disable Unnecessary Administrative Services And Secure Remote Desktop Protocol (RDP).

• Segment Cloud Workloads And Isolate Sensitive Infrastructure.

• Enable PowerShell Logging And Centralized Security Event Monitoring.

• Conduct Regular Vulnerability Assessments And Penetration Testing Of Cloud Environments.

Frequently Asked Questions (FAQ)

What Is Siloscape Malware?

Siloscape Is A Cloud-focused Malware Family Designed To Escape Windows Containers In Kubernetes Environments, Compromise The Host Operating System, And Provide Attackers With Remote Access For Deploying Additional Malicious Payloads.

Is Siloscape Ransomware?

No. Siloscape Is not Ransomware. It Functions Primarily As A Container Escape Tool And Backdoor Rather Than Encrypting Victim Files Or Demanding A Ransom.

What Systems Does Siloscape Target?

It Primarily Targets Windows-based Kubernetes Environments, Including Windows Server Hosts Running Windows Containers In On-premises Or Cloud Deployments.

Does Siloscape Encrypt Files?

No. Siloscape Does Not Encrypt User Files Or Append Ransomware-style File Extensions. Its Objective Is Unauthorized Access, Persistence, And Post-exploitation.

How Does Siloscape Spread?

It Can Spread Through Vulnerable Or Misconfigured Windows Containers, Exposed Kubernetes Services, Weak Credentials, Exploited Software Vulnerabilities, And Compromised Container Images.

Does Siloscape Steal Data?

Siloscape Itself Focuses On Establishing Access And Control. However, Attackers May Deploy Secondary Payloads Capable Of Credential Theft, Data Exfiltration, Cryptocurrency Mining, Or Ransomware.

Which Browsers Can Be Affected?

Siloscape Does Not Directly Target Browsers, But Follow-on Malware May Access Data Stored In Browsers Such As Google Chrome, Microsoft Edge, Mozilla Firefox, Brave, And Opera.

What Are The Main Indicators Of A Siloscape Infection?

Common Indicators Include Suspicious PowerShell Activity, Unexpected Processes Spawned From Container Contexts, Persistence Through Registry Keys Or Scheduled Tasks, Outbound Tor Communications, And Unauthorized Downloads Of Additional Malware.

Can Antivirus Software Detect Siloscape?

Modern Antivirus And Endpoint Detection And Response (EDR) Solutions May Detect Known Siloscape Samples Or Suspicious Behaviors. However, Behavioral Monitoring, Kubernetes Security Controls, And Cloud Workload Protection Are Essential Because Attackers Frequently Modify Malware To Evade Signature-based Detection.

How Can Organizations Protect Against Siloscape?

Organizations Should Harden Kubernetes Deployments, Restrict Container Privileges, Regularly Update Windows Server Hosts, Scan Container Images, Monitor For Container Escape Attempts, Enable Comprehensive Logging, And Implement Layered Security Controls Across Cloud And On-premises Environments.

Malware Removal Guide For PC

Malware Removal Guide For Web Browsers

Prevent Future Malware

Summary - Malware Removal Guide

Guide For VPN Uses

Malware Removal Guide – PC And Web Browser

PART 1: Remove Malware From Your PC (Windows)

Step 1: Boot Into Safe Mode

• Restart Your PC And Press F8 (or Shift + F8 For Some Systems) Before Windows Loads.

• Choose Safe Mode With Networking.

Safe Mode Prevents Most Malware From Loading.

Step 2: Uninstall Suspicious Programs

1. Press Win + R, Type appwiz.cpl, And Press Enter.

2. Sort By Install Date And Uninstall Unknown Or Recently Added Programs.

Step 3: Run A Malware Scan

Use A Trusted Anti-malware Tool:

Malwarebytes – https://www.malwarebytes.com

Screenshot Of Malwarebytes - Visit Links

Microsoft Defender – Built Into Windows 10/11

HitmanPro, ESET Online Scanner, Or Kaspersky Virus Removal Tool

ZoneAlarm Pro Antivirus + Firewall NextGen

VIPRE Antivirus - US And Others Countries, | India

VIPRE Antivirus - Mac

F-Secure Total - Global

Run A Full Scan And Delete/quarantine Detected Threats.

Step 4: Delete Temporary Files

1. Press Win + R, Type temp → Delete All Files.

2. Press Win + R, Type %temp% → Delete All Files.

3. Use Disk Cleanup: cleanmgr In The Run Dialog.

Step 5: Reset Hosts File

1. Go To: C:\Windows\System32\drivers\etc

2. Open hosts File With Notepad.

3. Replace With Default Content:

Step 6: Check Startup Programs

1. Press Ctrl + Shift + Esc → Open Task Manager

2. Go To Startup Tab

3. Disable Any Suspicious Entries.

Step 7: Reset Network Settings

1. Open Command Prompt As Administrator.

2. Run These Commands:

netsh Winsock Reset

netsh Int Ip Reset

ipconfig /flushdns

PART 2: Remove Malware From Web Browsers

? Common Signs Of Malware In Browser:

• Unwanted Homepage Or Search Engine

• Pop-ups Or Redirects

• Unknown Extensions Installed

Step 1: Remove Suspicious Extensions

For Chrome:

• Go To: chrome://extensions/

• Remove Anything Unfamiliar

For Firefox:

• Go To: about:addons → Extensions

• Remove Suspicious Add-ons

For Edge:

• Go To: edge://extensions/

• Uninstall Unknown Add-ons

Step 2: Reset Browser Settings

Chrome:

• Go To chrome://settings/reset → "Restore Settings To Their Original Defaults"

Firefox:

• Go To about:support → "Refresh Firefox"

Edge:

• Go To edge://settings/resetProfileSettings → "Reset Settings"

Step 3: Clear Cache And Cookies

All Browsers:

• Use Ctrl + Shift + Del → Select All Time

• Clear Cookies, Cached Files, And Site Data

Step 4: Check Search Engine & Homepage Settings

Make Sure They Are Not Hijacked.

• Chrome: chrome://settings/search

• Firefox: about:preferences#search

• Edge: edge://settings/search

Step 5: Use Browser Cleanup Tools (Optional)

• Chrome: chrome://settings/cleanup

• Use Malwarebytes Browser Guard For Real-time Browser Protection.

FINAL TIPS: Prevent Future Malware

• Always Download Software From Trusted Sources.

• Keep Windows, Browsers, And Antivirus Updated.

• Avoid Clicking Suspicious Links Or Ads.

• Use ad Blockers And reputable Antivirus Software.

• Backup Your Files Regularly.

Short Summary: Malware Removal Guide (PC & Web Browser)

To Remove Malware From Your Windows PC, Start By Booting Into Safe Mode, Uninstalling Suspicious Programs, And Scanning With Trusted Anti-malware Tools Like Malwarebytes. Clear Temporary Files, Reset Your Network Settings, And Check Startup Apps For Anything Unusual.

For web Browsers, Remove Unwanted Extensions, Reset Browser Settings, Clear Cache And Cookies, And Ensure Your Homepage And Search Engine Haven’t Been Hijacked. Use Cleanup Tools Like Chrome Cleanup Or Browser Guard For Added Protection.

?? Prevention Tips: Keep Software Updated, Avoid Suspicious Downloads, And Use Antivirus Protection Plus Browser Ad Blockers. Regular Backups Are Essential.

VPN - How To Use IT

1. Choose A Trusted VPN Provider

• Why It Matters: Not All VPNs Offer Malware Protection.

• What To Look For: Providers With built-in Malware/ad/tracker Blockers (e.g., NordVPN’s Threat Protection, ProtonVPN’s NetShield).

• Nord VPN
• Hide.me VPN

2. Enable Kill Switch

• Purpose: Prevents Data Leaks If Your VPN Connection Drops.

• Benefit: Ensures Your Real IP And Browsing Activity Aren’t Exposed To Malware-distributing Websites.

3. Use VPN With DNS Leak Protection

• Why It Matters: DNS Leaks Can Expose Your Online Activity To Attackers.

• Solution: Enable DNS Leak Protection In Your VPN Settings Or Use A Secure DNS Like Cloudflare (1.1.1.1).

4. Avoid Free VPNs

• Risk: Free VPNs Often Contain Malware, Sell User Data, Or Lack Security Features.

• Better Option: Use Reputable Paid VPNs That Offer security Audits And Transparent Privacy Policies.

5. Use VPN With Anti-Phishing Tools

• Some VPNs Block Known Phishing And Malicious Sites.

• Example: Surfshark’s CleanWeb, CyberGhost’s Content Blocker.

6. Keep Your VPN App Updated

• Reason: Security Patches Fix Known Vulnerabilities.

• Tip: Enable Auto-updates Or Check For Updates Weekly.

. Use VPN On All Devices

• Scope: Malware Can Enter Through Phones, Tablets, Or IoT Devices.

• Solution: Install VPN Apps On Every Internet-connected Device.

8. Don’t Rely On VPN Alone

• Fact: VPNs Do Not Remove Or Detect Malware On Your System.

• Complement It With:

  • Antivirus Software

  • Firewall

  • Browser Extensions For Script Blocking

9. Avoid Clicking Unknown Links While VPN Is On

• VPN Encrypts Traffic But Can’t Stop Malware From Executing If You Download Infected Files.

10. Use VPN With Split Tunneling Cautiously

• Split Tunneling Allows Certain Apps/sites To Bypass VPN.

• Tip: Never Exclude Browsers, Email Clients, Or Download Managers From VPN Tunneling.

Short Note - VPN Uses

A VPN (Virtual Private Network) Enhances Your Online Privacy By Encrypting Your Internet Traffic And Masking Your IP Address. It Protects Your Data On Public Wi-Fi, Hides Browsing Activity From Hackers And ISPs, And Helps Bypass Geo-restrictions. VPNs Also Add A Layer Of Defense Against Malware By Blocking Malicious Websites And Trackers When Using Advanced Features. However, A VPN Does Not Remove Existing Malware Or Act As Antivirus Software. For Full Protection, Combine VPN Use With Antivirus Tools, Regular Software Updates, And Cautious Browsing Habits. Always Choose A Reputable VPN Provider With Strong Security And Privacy Policies.