Dirty App: Agenda Ransomware – How to Remove

In the ever-evolving landscape of cybersecurity, Qilin ransomware, also known as Agenda ransomware, has emerged as a formidable threat. Written in Rust and Go programming languages, this ransomware is designed to be versatile and difficult to detect, making it a significant concern for organizations worldwide.

What Is Agenda Ransomware?

Agenda ransomware (Qilin) operates as a Ransomware-as-a-Service (RaaS) affiliate program, allowing cybercriminals to launch customized attacks on targeted victims. This ransomware gained notoriety for focusing on critical sectors, including healthcare and education, with a particular emphasis on organizations in Indonesia, Saudi Arabia, South Africa, and Thailand.

How Does Agenda (Qilin) Ransomware Work?

Agenda ransomware targets Windows-based systems using 64-bit Portable Executable (PE) files written in Go. Once it infiltrates a system, it employs AES-256 encryption to lock the victim’s files, followed by RSA-2048 encryption to secure the encryption key. Each encrypted file is appended with a new random file extension, such as “.MmXReVIxLV”, and a customized ransom note is dropped into each encrypted directory.

Key Features and Indicators of Compromise (IOCs)

Understanding the key features of Agenda ransomware is crucial for early detection and mitigation. Some of the primary IOCs include:

• Encryption: Agenda (Qilin) Ransomware uses AES-256 to encrypt files.
• File Extension: The ransomware appends a random extension to the filenames of encrypted files.
• Ransom Note: A ransom note, typically named “[random_string]-RECOVER-README.txt,” is left in each encrypted directory.
• System Behavior: The ransomware can reboot systems into safe mode, stop server-specific processes, and has multiple operational modes.
• Network Compromise: Agenda is associated with the compromise of entire networks, including shared drives.

Distribution Methods

Agenda ransomware spreads through several methods, making it a versatile and dangerous malware. These methods include:

• Dissemination of Infected Files: The ransomware spreads through files downloaded and installed on the victim’s system without their knowledge.
• Malicious Hyperlinks: Victims may unknowingly download and install the malware by visiting infected websites.
• RDP-Based Assaults: Exploiting vulnerabilities in Remote Desktop Protocol (RDP), attackers gain access to the victim’s system.
• Phishing: A common entry point is a phishing email containing a malicious attachment or link, tricking the victim into installing the malware.

Consequences and Impact

Once Agenda ransomware successfully infiltrates a system, it can lead to data exfiltration and encryption, rendering files inaccessible to the victim. The attackers then demand a ransom for the decryption key, threatening to publish sensitive data if the demands are not met.

Is There a Free Decryptor Available?

Unfortunately, there is no known public decryptor for Agenda ransomware at this time. This underscores the importance of preventive measures and early detection to mitigate the damage caused by this ransomware.

How to Handle a Agenda (Qilin) Ransomware Attack

If your system is infected with Agenda ransomware, it’s crucial to act swiftly:

1. Remove the Ransomware: Use anti-malware or anti-ransomware software to quarantine and remove the malicious software from your system.
2. Eliminate Vulnerabilities: Ensure that your device is free from exploit kits and other vulnerabilities to prevent further attacks.
3. Data Recovery: If possible, restore your data from a secure backup. Avoid paying the ransom, as there is no guarantee that the attackers will provide the decryption key.

Agenda (Qilin ransomware, with its sophisticated encryption and distribution methods, poses a significant threat to organizations across various sectors. Staying informed about its behavior, distribution methods, and indicators of compromise is essential for early detection and prevention. By implementing robust cybersecurity measures and staying vigilant, organizations can protect themselves from the devastating impact of this ransomware.