Danger Siker Ransomware Virus: Removal Guide (.DangerSiker File)

Scams & Viruses Solved issue

Question asked by:

Hannah L.


My files are not opening and are with extension .dangersiker


all of my files are infected with .dangersiker extension and I see a ransom note asking me to pay monero.
What is all that and how can I get rid of it?

Thank you!
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The emergence of ransomware1 like Danger Siker (.DangerSiker) poses a significant threat to individuals and organizations alike.
This guide aims to shed light on the workings of the Danger Siker ransomware, its distribution methods, and effective strategies to mitigate its impact, also to remove it if you have been infected.

What is Danger Siker Ransomware?

Danger Siker ransomware is malicious software that encrypts files on a victim’s computer, rendering them inaccessible. It then demands a ransom, typically in cryptocurrency, for the decryption key. Characterized by the “.DangerSiker” file extension appended to encrypted files, this ransomware stealthily infiltrates systems, encrypts files, and leaves a ransom note detailing payment demands.

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How “Danger Siker” Spreads?

This nefarious software commonly spreads through phishing emails containing malicious attachments or links, downloads from compromised websites, or through exploiting vulnerabilities in software.
Attackers craft convincing emails or social media messages that trick users into executing the ransomware. These tactics are continually evolving, making them harder to identify and avoid.
It’s not the only ransomware, there are others like Blackoutware as well.

Identifying a Danger Siker Infection

Recognizing an infection by the Danger Siker ransomware virus is crucial for quick response and mitigation. Here are key indicators that your system might be compromised:

File Extension Changes: One of the most apparent signs of a Danger Siker infection is the change in file extensions. Affected files will have the ‘.DangerSiker’ extension appended to them. For instance, a file originally named ‘document.pdf’ would be renamed to ‘document.pdf.DangerSiker’.

Inaccessible Files: Files encrypted by Danger Siker ransomware will become inaccessible. Attempts to open these files typically fail, as the encryption renders them unreadable without the specific decryption key.

Ransom Note: Danger Siker ransomware usually leaves a ransom note in the folders containing encrypted files. This note often comes in the form of a text file named ‘mesajin_var_amcik.txt‘ or ‘README.txt’, outlining the demands of the attackers. It includes instructions on how to pay the ransom, usually in a cryptocurrency, and how to contact the attackers for the decryption key.

Unexpected System Behavior: The presence of ransomware like Danger Siker can cause unusual system behavior. This might include slow system performance, crashing programs, or an inability to access certain system functionalities.

Security Software Alerts: If you have antivirus or anti-malware software installed, it may detect and alert you about the presence of ransomware. However, in some cases, Danger Siker might bypass these protections, especially if they are outdated.

Unusual Network Activity: Danger Siker, like many ransomware variants, may communicate with a server controlled by the attackers. This can result in unusual outgoing network activity from the infected system.

What Does the Ransom Note Look Like? Should You Be Concerned?

The DangerSiker ransom note is written in Turkish.
The message says that victims should not try to restore the file themselves because it may cause further damage to the situation. Of course, this is complete nonsense and you should definitely ignore it.
However, it does note that to recover the files one will need to pay 0.5 XMR (Monero crypto currency). The victims are then asked to notify [email protected] by sending an email after the transfer is complete.

How to Isolate Infected Devices?

When dealing with ransomware infections like Danger Siker, isolating the infected device is a critical step. Ransomware can encrypt files on external storage devices and spread across local networks, making isolation a priority to prevent further damage.

Step 1: Disconnect from the Internet

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To cut off the ransomware’s ability to communicate or spread via the internet, disconnecting your computer is crucial.

  • For Wired Connections: Unplug the Ethernet cable from your computer. This is the most straightforward way to disconnect from the internet.
  • For Wireless Connections: If you’re connected via Wi-Fi or are unsure how to handle cables, you can also disconnect manually:
  1. Go to the “Control Panel.
  2. Use the search function in the top-right corner, type “Network and Sharing Center,” and open it.
  3. Select “Change adapter settings” found in the window’s upper-left corner.
  4. Right-click on each listed connection and choose “Disable.” This action will disconnect your system from the internet. To reconnect later, right-click and select “Enable.”

Step 2: Unplug All Storage Devices

Ransomware can also target connected storage devices.

  1. Safely Eject Devices: Before physically disconnecting any external hard drives, USB flash drives, etc., it’s important to eject them properly to avoid data corruption.
  2. Open “My Computer” (or “This PC” on some Windows versions).
  3. Right-click on each external device listed and select “Eject.”

Step 3: Log Out of Cloud Storage Accounts

Ransomware has the potential to compromise cloud storage accounts.

Log Out From All Accounts: Ensure that you log out of any cloud storage accounts in your web browsers and any related applications.

Temporary Uninstallation: Consider removing cloud storage management applications until the ransomware is fully removed to prevent cloud data from being encrypted.

Full Detection & Removal of ‘Danger Siker’ Ransomware

#1: Use the Auto-virus Removal Tool From Iolo System Mechanic

Manually detecting, decrypting and removing the ransomware can be troublesome, lengthy and not always successful.
That’s why we recommend downloading iolo System Mechanic and running a full PC scan!

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#2: Manually Detect and Decrypt Infected Files

In order to fully detect and confirm that “danger siker” has infected your PC:

  1. Go to: the id-ransomware website and input an infected, file, ransom note, or email address to identify the virus.
  2. Then go to the NoMoreRansom project and download a decryption tool by entering the Ransomware name found in step 1.
  3. Open the decryptor software and start the decryption process.

Ransomware Prevention and Protection Strategies

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Prevention is key in the fight against ransomware. Adopting robust cybersecurity practices can significantly reduce the risk of infection. These include:

  • Regular Backups: Maintain regular backups of important data, preferably offsite or in cloud storage, to mitigate the loss in case of an attack.
  • Software Updates: Keep all software, especially security software, up to date to protect against known vulnerabilities.
  • Caution with Emails and Downloads: Be vigilant about emails and downloads. Avoid clicking on unknown links or downloading attachments from unverified sources.
  • Security Awareness: Educate yourself and your organization on recognizing phishing attempts and other common cyber threats.

How to Backup & Preserve Your PC Data?

Safeguarding your data through effective backup strategies is crucial. This is especially true in the face of threats like “Danger siker” ransomware. Here’s a comprehensive guide on creating data backups and managing file security.

Effective Partition Management

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Creating multiple partitions on your storage device is a wise strategy for data protection. This approach involves:

Storing Data in Separate Partitions: Keep your important files away from the partition that holds your operating system. In case of a system failure or a malware attack where you might need to format the OS partition, having separate partitions ensures your crucial data remains untouched.

Having reliable backups is paramount. Here are some methods to consider:

External Storage Devices:

  1. Copy your data to external devices like hard drives, SSDs, flash drives, etc.
  2. After backing up, disconnect these devices and store them safely away from extreme temperatures and direct sunlight.

Cloud Storage Solutions:

Using cloud services or remote servers is another option, though it requires an internet connection and has a minimal risk of security breaches.

Microsoft OneDrive is a recommended option for cloud backups. It offers 5 GB of free storage with options for additional space through subscriptions. OneDrive allows you to sync and access your files across multiple devices.

Creating a Backup with Microsoft OneDrive

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Here’s how to back up your files using Microsoft OneDrive:

Setting Up Your Backup:

  1. Click the OneDrive icon in the taskbar.
  2. Select ‘Help & Settings’ and then ‘Settings’.
  3. Under the ‘Backup’ tab, choose ‘Manage backup’.
  4. Opt to backup key folders like Desktop, Documents, and Pictures. Click ‘Start backup’.

Adding Files Manually:

For files not in the automatic backup locations, manually copy them.

  1. Navigate to the file or folder, right-click, and select ‘Copy’.
  2. In the OneDrive folder, right-click and choose ‘Paste’, or drag and drop the items into OneDrive.

Understanding File Statuses & Restoring Infected Files

Files in OneDrive will have status icons indicating whether they are synced (green checkmark), available only online (blue cloud icon), or syncing (sync icon).

To view files stored only in OneDrive, select ‘View Online’ from the ‘Help & Settings’ menu.

In case of ransomware encryption — use Version History.
OneDrive’s Version history allows you to restore files to versions prior to encryption.

Restoring the Entire OneDrive:

  1. Go to OneDrive settings, click ‘Options’, and select ‘Restore your OneDrive’.
  2. Choose a date to restore from and click ‘Restore’ to revert all activities to that date.

Regular, up-to-date backups are your best defense against data loss due to ransomware or other digital threats. By following these steps, you can ensure your data remains secure and recoverable in any situation.

We also recommend exploring the software solutions provided below, designed to assist in the automatic backup of your data and protection against ransomware threats.
If you have any other issues with ransomware — feel free to contact us for help.

  1. What is Ransomware? — via IBM.com []
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About the author
Jack Palentino - Expert Author, QA

Jack works at WindowsGuided.com from the beginning. He’s been a colleague with the owner Iggy & who consulted people with their PC issues for years.

He fixed and custom-developed various Windows apps. And now Jack is overlooking the QA processes on WindowsGuided and writes expert guides on various PC error fixes.