Ransomware

RADAR Ransomware represents a particularly insidious strain of malware that compromises systems by encrypting files and demanding ransom payments for their decryption. This ransomware operates by appending random character strings to the names of affected files, making it difficult for victims to identify or use their data. usually it's 8-character alphanumerical sequence, something like .Qe7l01NP or similar. After encryption, it generates a ransom note titled README_FOR_DECRYPT.txt, usually found in every folder containing encrypted files. The message warns victims against tampering with or deleting the locked files, as these actions could render decryption impossible. Unfortunately, there is no guarantee that paying the ransom will lead to the safe recovery of files, as attackers often fail to provide the necessary decryption tools even after receiving payment.

LostInfo Ransomware is a malicious software designed to encrypt the files on a victim's computer, making them inaccessible and effectively holding them hostage until a ransom is paid. This type of ransomware typically targets a wide range of file types, ensuring that critical data such as documents, photos, and databases are all affected. Primarily, it appends the .lostinfo extension to each encrypted file, signifying that the file has been compromised. The encryption utilized by LostInfo Ransomware generally employs strong algorithms, such as AES (Advanced Encryption Standard) or RSA (Rivest–Shamir–Adleman), which are virtually impossible to decrypt without the corresponding key. The attacker leaves behind a ransom note, typically named README.TXT, in each affected directory, which contains instructions on how to pay the ransom, usually demanding payment in cryptocurrency like Bitcoin to maintain anonymity.

GameCrypt Ransomware is a malicious software designed to encrypt files on an infected computer, demanding a ransom payment for their decryption. Upon infection, it appends the file extension .GameCrypt to all encrypted files, making them unusable until a victim complies with the ransom demands. This ransomware employs a sophisticated encryption algorithm to secure the files, typically utilizing AES, which renders the data inaccessible without the proper decryption key. Victims are often greeted with a ransom note titled how_to_back_files.hta, which is usually placed on the desktop or within the affected folders, instructing them on how to pay the ransom, often in cryptocurrency, to purportedly regain access to their files.

NullBulge Ransomware represents a formidable new threat in the ever-evolving landscape of cybercrime, specifically targeting AI and gaming communities. Originating from the notorious LockBit family, this ransomware variant not only encrypts files but also appends a unique, random extension such as .uhei662ns to the filenames. Victims might see their files transformed from document.docx to document.docx.uhei662ns, making them inaccessible without the decryption key. NullBulge ransomware is known to employ robust encryption algorithms, typically AES-256, which ensures that the files remain locked until the ransom is paid. Additionally, the ransomware modifies the victim's desktop wallpaper to inform them of the breach and drops a ransom note, titled [extension].README.txt, in every affected directory. This note provides instructions on how to contact the cybercriminals, including links to TOR websites for secure communication and a personal decryption ID.

Qqjj Ransomware is a type of malicious software that belongs to the Djvu ransomware family, designed to encrypt files on an infected computer and demand a ransom for their decryption. Once it infiltrates a system, it appends the .qqjj extension to the names of encrypted files, transforming a file like image.jpg into image.jpg.qqjj. This ransomware employs strong encryption algorithms, making it virtually impossible to decrypt the files without the proper decryption tool, which is typically only available to the attackers. Along with the encrypted files, Qqjj Ransomware drops a ransom note named _readme.txt on the desktop and in various folders, detailing the ransom payment instructions and contact information for the cybercriminals. Victims are usually instructed to pay $980, with a discount of 50% if they contact the attackers within 72 hours, reducing the ransom to $490.

ShrinkLocker Ransomware emerged on the landscape in April-May 2024 and has been a significant concern for security experts. This malicious program uses a combination of AES and RSA algorithms to encrypt user files, making them inaccessible without a decryption key. Interestingly, ShrinkLocker does not add specific file extensions to the encrypted files, which can make it more challenging to identify. Instead, it renames the system disk with an email address through BitLocker, urging victims to contact the attackers for decryption instructions. The ransom note associated with ShrinkLocker is not a conventional text file or document. Instead, the ransom note is a new sign that appears on the system disk in the form of an email address. This detail implies that the ransomware primarily targets administrators who may overlook this change without booting into a recovery environment.

Detected during a malware sample examination on VirusTotal, Labour Ransomware is a type of cyber malicious software that encrypts files on infected systems, effectively taking them hostage. Upon encryption, it appends the .labour extension to the original file names, transforming files like 1.jpg into 1.jpg.labour. Victims are alerted to the encryption through a ransom note created as a text file named README.txt, typically placed in prominent directories. The note demands the victim email the attacker (often to email addresses like bfe1234@yahoo.com) and provide a unique ID alongside a private IP address. Additionally, it threatens the publication of sensitive files on deep web forums if the ransom isn't paid promptly. Generally, paying the ransom is not advisable as attackers frequently fail to provide legitimate decryption tools even after payment.

Wikipedia Ransomware is a type of malicious cryptovirus that targets individual and organizational data by encrypting files and demanding a ransom for decryption. It appends the .wikipedia extension to the names of the encrypted files, rendering them inaccessible without the unique decryption key. This ransomware often uses a robust combination of encryption algorithms, such as AES (Advanced Encryption Standard) and RSA (Rivest-Shamir-Adleman) to secure the files, making it extremely difficult to decode the data without the proper decryption key. Victims typically find a how_to_decrypt_files.txt file within affected directories, which serves as the ransom note. This note provides instructions on how to pay the ransom, usually in Bitcoin, and contains threats that further attempts to decrypt the files without following the cybercriminals' guidelines may result in permanent data loss.