Viruses

PayForRepair Ransomware is a malicious program part of the notorious Dharma ransomware family. Designed to encrypt user data and demand a ransom for decryption, it appends a distinct file extension, .P4R, to encrypted files. Additionally, it includes a unique victim ID and the attacker's email address in the filename of each compromised file. For example, an original file named document.docx would be renamed to document.docx.id-[uniqueID].[attacker's email].P4R. By utilizing robust encryption algorithms typical of higher-end ransomware, it ensures that files remain inaccessible without decryption. This malware generates ransom notes in two formats: a pop-up window and a text file named info.txt. The latter is deposited into every affected directory. The instructions inform victims about the encryption and guide them to contact the attackers via email to negotiate file recovery terms. Despite offering to decrypt a few files as proof before payment, the ransom note warns users against altering encrypted files or using third-party decryption tools, citing potential data loss risks.

Neptune RAT is a sophisticated Remote Access Trojan (RAT) designed to give attackers full control over infected devices. Written in the Visual Basic (.NET) programming language, it is a multi-functional malware with capabilities ranging from data theft to ransomware operations. Upon infiltration, Neptune RAT gathers extensive system information, including hardware details, installed software, and network data, all while employing advanced anti-detection techniques to evade security measures. One of its alarming features is the ability to bypass User Account Control (UAC), granting itself administrative privileges to manipulate system settings. This malware is adept at conducting chain infections by executing various PowerShell commands, which can lead to additional malicious software being downloaded and executed. Beyond data exfiltration, Neptune RAT can engage in spyware activities, such as recording audio and video or capturing keystrokes, posing severe privacy risks. Its ransomware functionality encrypts files, appending them with a ".ENC" extension, and demands a Bitcoin ransom for decryption, further demonstrating its potential for causing financial and data loss.

DarkMystic (BlackBit) Ransomware is a malicious software within the BlackBit ransomware family, known for encrypting users' data and demanding payment for decryption. Upon infecting a system, it transforms file names by prepending the attackers' email address and a victim-specific ID, then appends them with a .darkmystic extension. For example, a file named image.jpg might be altered to look like [darkmystic@onionmail.com][123456]image.jpg.darkmystic. Employing strong cryptographic algorithms, typically either symmetric or asymmetric encryption, this ransomware renders files inaccessible without a decryption key—often withheld by the attackers until a ransom is paid, usually in Bitcoin. Victims are directly informed via a ransom note generated in multiple formats—a pop-up window entitled info.hta and a text file named Restore-My-Files.txt, strategically placed on the desktop and within encrypted folders.

Jackalock Ransomware exemplifies a sophisticated type of malware that belongs to the MedusaLocker family, designed to encrypt a user’s files with the intent of demanding a ransom for their release. Once it infiltrates a system, it encrypts the files with strong RSA and AES cryptographic algorithms, rendering them inaccessible to victims who lack the decryption key. An observable characteristic of this ransomware is its tendency to append the .jackalock extension to encrypted files, transforming a file such as image.jpg to image.jpg.jackalock. This alteration of the file extension serves as a marker of encryption and prevents users from opening their files ordinarily. Coupled with encryption, Jackalock leaves a digital ransom note, titled READ_NOTE.html, on affected devices. This message serves as a grim notification to victims, informing them that personal or confidential data has been encrypted and exfiltrated, threatening to leak the data unless a ransom is paid. Victims are encouraged to act within 72 hours to avoid an increased ransom fee, with cyber criminals giving a semblance of assurance by offering to decrypt a few non-important files for free.

Jeffery Ransomware is a form of malicious software that infiltrates a victim's system, encrypts files, and then demands a ransom for their decryption. This particular strain appends a .Jeffery extension to the encrypted files, transforming them significantly—what once was a file named document.txt would become document.txt.Jeffery, thereby rendering the file inaccessible to its owner. The encryption mechanism employed by this ransomware, like many in its class, involves strong cryptographic algorithms that all but prevent file recovery without a decryption key. As part of its modus operandi, the ransomware alters the victim's desktop wallpaper and deposits a ransom note titled JEFFERY_README.txt on the infected system. This note typically instructs victims to contact the attackers via a provided email address to negotiate the return of their files.

VerdaCrypt Ransomware is a sophisticated form of malware designed to encrypt a victim's files, rendering them inaccessible unless a ransom is paid. It employs the .verdant file extension, which is appended to compromised files, indicating that they have been encrypted and are inaccessible to the user. This type of ransomware typically uses advanced cryptographic algorithms to lock data, making decryption without the cybercriminals' unique key virtually impossible. The ransomware delivers its demand and instructions through a text file titled !!!_READ_ME_!!!.txt, which is generally placed in prominent locations such as the desktop or within folders containing encrypted data. This note informs victims of the encryption, threatening data exposure or destruction if payment is not made in Bitcoin. The ransom note often includes contact information, urging the victim to communicate via protected channels like Protonmail for further instructions.

ComboCleaner Ransomware is a malicious program categorically classified as ransomware. Its primary function is to encrypt user files, append an extension, and subsequently demand payment for decryption keys. Once activated, this ransomware employs advanced encryption algorithms, commonly utilizing either symmetric or asymmetric cryptography, to ensure files remain inaccessible without decryption keys. After encryption, the malware alters the file names by prepending them with .PCRISKyCOMBOCLEANER, significantly disrupting file access for victims. Following this encryption process, ComboCleaner Ransomware drops a series of ransom notes into infected directories. These notes, numerically labeled from PCRISKyCOMBOCLEANER.Read.Me.1.tXt to PCRISKyCOMBOCLEANER.Read.Me.20.tXt, outline the terms for ransom and provide contact information for the attackers. Typically, the ransom demand starts at 5000₹ and doubles after a week if not received, creating pressure for quick payment.

HackTool:Win32/Winring0 is a type of malicious software that poses a significant threat to computer systems by attempting to bypass security limitations on commercial software and other programs. Commonly distributed through the internet, this malware often infiltrates systems via downloads of shareware, freeware, or pirated software. Once installed, it can surreptitiously drop harmful files into critical system folders and modify registry entries to ensure it runs upon system startup. The primary objective of HackTool:Win32/Winring0 is to exploit the infected system for malicious purposes, such as downloading additional malware, collecting sensitive data, and opening backdoor access for remote attackers. Symptoms of this infection can include unexpected alerts from antivirus applications, although not all security tools may recognize it as a threat. Immediate removal is strongly recommended to prevent further damage and protect sensitive information. Utilizing robust antivirus solutions and performing regular system scans can effectively detect and eliminate this malware, safeguarding your system from potential exploitation.