AntiHacker Ransomware Decryptor
AntiHacker ransomware, part of the infamous Xorist family, encrypts your files and appends the .antihacker2017 extension. Victims are instructed to email [email protected] and coerced with manipulated desktop wallpaper and pop-up messages claiming that using antivirus tools or rebooting the system will destroy the data. These intimidation tactics are false. The encryption itself has structural weaknesses that can be reversed with tested tools—no ransom required.
Our AntiHacker Decryptor: Precision Recovery, Expert-Built
We analyzed the Xorist variant used by AntiHacker and created a dedicated decryptor capable of restoring files affected by the .antihacker2017 extension. Designed for Windows systems, this tool has successfully recovered data across diverse environments and even in partially compromised systems.
Encrypted files are securely scanned and analyzed via a cloud-based platform incorporating AI models and blockchain-verified integrity checks. If the ransom note is available, our decryptor maps your unique victim ID to the correct decryption key. If the note is missing, a universal fallback infers the key using structural analysis and file entropy. Everything starts with a read-only scan to ensure safety before the actual recovery begins.
To run our service, you’ll need the original ransom note (КАК РАСШИФРОВАТЬ ФАЙЛЫ.txt), access to the encrypted files, an internet connection for cloud processing, and administrator-level permissions on the affected machine. With these components, our decryptor delivers reliable recovery—no payment to cybercriminals.
Step-by-Step AntiHacker Recovery Guide with Decryptor
Begin by scanning the infected machine for files with the .antihacker2017 extension and ensure the ransom note is present in multiple folders. Next, isolate the device from all networks—Wi-Fi, LAN, external drives, and cloud sync—to prevent further encryption. Then share a few encrypted files and the ransom note with our recovery team. This allows us to confirm the variant and outline a tailored recovery timeline.
Using the AntiHacker Decryptor: Step-by-Step
- Run as Administrator: Launch the decryptor with full administrative privileges to ensure complete access to encrypted directories and system-level files.
- Maintain Internet Connectivity: The tool requires an active internet connection to securely communicate with our decryption servers and verify key mappings.
- Enter Victim ID: Locate the unique victim identifier found in the ransom note (КАК РАСШИФРОВАТЬ ФАЙЛЫ.txt) and input it when prompted. This ensures the tool uses the correct encryption batch for your infection.
- Start Decryption: Once initiated, the decryptor will analyze and process all affected files, restoring them to their original names and formats.
- Preserve File Integrity: All decryption routines are executed in a way that preserves original file structure, timestamps, and content accuracy.
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Immediate Steps to Take After an AntiHacker Ransomware Attack
The moment you recognize an infection, disconnect the affected device from all networks to prevent lateral spread. Do not reboot, run antivirus scans, or delete any files, including the ransom note—doing so may trigger additional cryptographic routines or destroy essential decryption elements. Collect system logs, network captures, and memory dumps for forensic analysis. Instead of attempting generic fixes or unverified decryptors, contact a professional recovery team. They can quickly analyze the ransomware strain and begin recovery with tools designed for .antihacker2017.
AntiHacker Decryption and Recovery Options
Free Methods
1. Xorist‑Based Decryptor (Windows)
- How it works: Reverse‑engineers the predictable symmetric encryption used by early AntiHacker variants to restore .antihacker2017 files.
- Strengths: Runs offline and safely in sandboxed environments without internet connectivity.
- Limitations: Does not support heavily modified versions that use randomized keys or altered file structures.
2. Backup Restore
- How it works: Rebuilds systems from clean, offline or off-site backup sources.
- Integrity checks: Use checksums or read‑only mounts to confirm backups are unaffected by encryption.
- Best practices: Immutable solutions (WORM, cloud snapshots) and network segmentation make recovery more robust.
3. VM Snapshot Rollback
- How it works: Reverts virtual machines to a snapshot taken before infection—typically within minutes.
- Requirements: Snapshots must not have been altered during the attack and must remain stored securely.
- Recommendation: Automate frequent snapshots with strict retention and access control to ensure availability.
4. GPU-Based Brute‑Force Decryptor (Linux Research Tool)
- How it works: Brute-forces nanosecond-level encryption seeds using CUDA GPUs to reconstruct keys.
- Hardware & environment: Requires NVIDIA GPU (RTX 3060 or higher), Linux CLI, and CUDA toolkit.
- Offline compatibility: Fully works in isolated environments; the ransom note is optional if file metadata is intact.
Paid Options
Ransom Payment (Last Resort)
- Victim ID linkage: Decryption tool received from attackers aligns with your unique ID code.
- Risks: No guarantee of a working tool; it may be incomplete or malicious.
- Considerations: May be illegal or require reporting in your region; it also emboldens cyber criminals.
Third‑Party Negotiators
- Role: Act as professional intermediaries to reduce ransom demands.
- Verification: Often secure a test decrypt to verify the attacker’s tool works.
- Trade-offs: High fees (percentage-based or flat-rate), uncertain outcomes, and potential delays due to negotiations.
Anatomy of AntiHacker Ransomware
AntiHacker is a static, Xorist-based payload that does not spread laterally or communicate with command-and-control servers. On execution, it encrypts accessible user files—appending .antihacker2017—drops the ransom note in Cyrillic, and replaces the desktop wallpaper with a shame-based message. It limits victims to 50 attempts at entering the decryption key. The warnings against rebooting or antivirus use are deceptive scare tactics, not functional mechanisms.
AntiHacker Ransom Note Breakdown
Each affected folder contains a file named КАК РАСШИФРОВАТЬ ФАЙЛЫ.txt. It begins with an alert that “all your files have been encrypted” and instructs victims to email [email protected] along with a unique code—often long numeric sequences. The note warns of data loss after 50 incorrect code attempts, urges victims not to reboot or use antivirus, and uses shame tactics to pressure victims. This note is essential for victim ID-based recovery using our decryptor.
It contains the following message:
Внимание! Все Ваши файлы зашифрованы!
Чтобы восстановить свои файлы и получить к ним доступ,
отправьте письмо на почту [email protected]
С кодом №83465178562201
У вас есть 50 попыток ввода кода. При превышении этого
количества, все данные необратимо испортятся. Будьте
внимательны при вводе кода!
Также не рекомендую выключать компьютер. Это также приведет к удалению Windows. Это не шутка и не прикол. Стоит перезагрузить компьютер и вы навсегда потеряете свои данные.
AntiHacker Ransomware: Attack Timeline & Global Reach
Reported AntiHacker Ransomware Incidents Over Time
Top Countries Targeted by AntiHacker Ransomware
Indicators of Compromise (IOCs)
Signs of infection include files ending in .antihacker2017, presence of the КАК РАСШИФРОВАТЬ ФАЙЛЫ.txt note, wallpaper changes, and a registry entry at HKCU\Software\Microsoft\Windows\CurrentVersion\Run\AntiHacker. Antivirus engines may flag the malware as Trojan.Win32.Xorist.dxuuhl (NANO‑AV) or Artemis!Trojan (McAfee/Skyhigh).
MITRE ATT&CK Techniques Used by AntiHacker
AntiHacker ransomware is relatively straightforward in its operation, but it effectively uses a set of core MITRE ATT&CK techniques to ensure execution, persistence, and file destruction. It avoids complex behaviors like lateral movement or command-and-control callbacks, which makes behavioral monitoring and system-level detection essential.
T1059.003 – Command and Scripting Interpreter: Windows Command Shell
AntiHacker uses cmd.exe to execute its encryption logic and supporting routines. These are typically batch scripts embedded within the executable or dropped into the system’s temporary directories. Through this interface, it launches file locking processes, disables services, and triggers registry edits—all while operating natively within the Windows shell environment.
T1547.001 – Registry Run Keys / Startup Folder
To maintain persistence, the malware modifies the Windows registry, particularly the Run keys under HKCU\Software\Microsoft\Windows\CurrentVersion\Run. This allows AntiHacker to automatically start upon reboot, embedding itself into the system’s startup sequence without requiring a service or scheduled task. It’s a minimal footprint approach to auto-execution.
T1486 – Impact: Data Encrypted for Impact
This is AntiHacker’s core functionality. Using symmetric encryption, it scrambles all user-accessible files and appends the .antihacker2017 extension. Its lightweight Xorist-based encryption engine enables rapid file targeting across local drives, USB devices, and mapped network shares. No files are exfiltrated—it is purely encryption for ransom.
T1070.004 – Indicator Removal: File Deletion – Shadow Copies
One of the ransomware’s earliest actions is executing the vssadmin delete shadows command. This removes all volume shadow copies, which would otherwise allow users to restore unencrypted versions of their files. The command is executed silently through the Windows CLI, eliminating a vital safety net in minutes.
T1566.001 – Phishing: Spearphishing Attachment
Initial access is typically gained through malicious email attachments. These are often ZIP archives or Office documents that contain embedded scripts or macros. Once opened, the script launches the payload without further user interaction. Victims are tricked through socially engineered emails that appear to come from legitimate contacts or services.
No C2 or Lateral Movement Observed
Unlike more advanced ransomware families, AntiHacker doesn’t establish command-and-control channels or attempt to propagate across networks. Its payload is standalone and self-contained. This simplicity means traditional network defenses (like firewall logs or outbound traffic analysis) are less likely to catch it—making local activity monitoring of the registry, PowerShell, and file system changes critically important for detection.
Tools Used by AntiHacker Ransomware
Tools Used by AntiHacker Ransomware
AntiHacker makes extensive use of built-in Windows utilities to deploy and sustain its attack. Its encryption process typically begins with the execution of CMD or batch scripts, which handle the orchestration of file locking, process termination, and deployment of persistence mechanisms. These scripts are either embedded in the main executable or dropped during the infection phase.
To ensure it re-launches after a reboot, the malware modifies the system registry using Reg.exe, placing a new entry under the Run key. This auto-start method is simple but effective, allowing AntiHacker to stay persistent without relying on additional payloads.
As part of its data destruction strategy, it invokes vssadmin.exe—a legitimate Windows tool—to delete Volume Shadow Copies, removing the user’s ability to recover previous file versions or use system restore. This is a classic ransomware tactic designed to force compliance by eliminating local recovery options.
In more evasive variants, AntiHacker may use rundll32.exe or raw shell commands to execute code directly in memory. These techniques allow it to bypass certain antivirus detections and avoid dropping permanent files to disk.
Finally, the actual encryption engine powering the attack is a lightweight, embedded module derived from the Xorist ransomware codebase. It uses symmetric key encryption, likely XOR-based or a ChaCha-style cipher, optimized for speed and wide file targeting. The design allows AntiHacker to quickly encrypt large file sets across multiple drives without needing remote control or complex infrastructure.
Prevention Best Practices
The best defense against AntiHacker involves disabling macros by default in Office, implementing application allowlisting with tools like AppLocker, and enforcing multi-factor authentication on admin accounts. Endpoint Detection and Response (EDR) systems should be deployed to monitor registry and filesystem activity. Follow a 3–2–1 backup strategy—three copies, two formats, one off-site—and use immutable storage solutions like AWS S3 Object Lock or Azure Immutable Blob to protect backups from manipulation.
Conclusion
Although AntiHacker presents itself as threatening and destructive, its encryption can be reversed using the methods outlined here. Whether leveraging our decryptor or relying on quality backups and snapshots, recovery is achievable without yielding to ransomware demands. Act swiftly, preserve crucial evidence, follow the correct recovery path, and involve trusted professionals to restore systems and secure your operations without banking on criminals.
MedusaLocker Ransomware Versions We Decrypt