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Pe32s Ransomware is a nefarious malware type that specifically targets and encrypts data on infected systems, altering the filenames to make them inaccessible. Upon infiltration, it appends a unique identifier and a .pe32s extension to each file, transforming filenames to appear in a format like [original_filename].[victim's_ID].[format].pe32s. This systematic alteration poses significant challenges for the victim's accessibility to their files. The encryption employed by Pe32s is typically robust, utilizing advanced cryptographic algorithms which make the process of decryption exceedingly difficult without the key managed by cybercriminals. Affected individuals discover a README.txt file strategically placed across various system locations, particularly on the desktop, serving as the ransom note. This note demarcates the attack's aftermath by informing victims of the encryption and demanding separate payments for decryption of their data and to prevent the leak of exfiltrated content. Payments are demanded in Bitcoin, reflecting the cybercriminals' attempts to retain anonymity and mitigate traceability.

FXLocker Ransomware is a menacing type of malware that infiltrates systems with the primary aim of encrypting user files to extort a ransom. Once installed, it systematically targets files on an infected machine, locking access and appending a particular extension to indicate the encryption—this notorious ransomware appends the .fxlocker extension to the affected files, transforming them into unreadable formats at the user level. For file encryption, FXLocker Ransomware utilizes complex cryptographic algorithms that are nearly impossible to decipher without the unique key held by the perpetrators. Victims of this ransomware find a pop-up along with a document titled README.txt placed within numerous folders, both laying out the instructions for cryptocurrency payment to procure the decryption key. These ransom notes typically demand 0.75892 BTC, while ominously warning against tampering with files or shutting down systems to avoid permanent data loss.

SafePay Ransomware is a malicious software designed to encrypt files on a victim's computer and demand payment for their release. Upon infection, it adds the .safepay extension to the files, for instance, transforming document.jpg into document.jpg.safepay. This ransomware employs sophisticated encryption algorithms, making it challenging to decrypt the files without the attackers' specific key. Users often notice something is wrong when they discover their files have been renamed, and they cannot access them. Alongside the encrypted files, a ransom note titled readme_safepay.txt is typically placed in several directories across the system. This note details instructions for the victim, urging contact with the attackers via the Tor network, and highlights the supposed misconfigurations in the network security that the ransomware exploited. Victims may be given a two-week window to initiate contact and are threatened with data leaks if they fail to comply. The threat actors aggressively assure that fulfilling the ransom demands will result in the decryption of files, yet they assert no political motivation behind their attack.

DeathHunters Ransomware represents a severe and malicious threat to computer systems, operating by encrypting essential user files and demanding a ransom for their release. It is a variant of Chaos ransomware, known for its debilitating effects on infected devices. Once a system is compromised, DeathHunters swiftly encrypts files, appending their names with an extension comprising four random characters, such as changing 1.jpg to 1.jpg.zypx. This malware then alters the user's desktop wallpaper to display a harrowing message that falsely accuses the user of pedophilia, attempting to pressure victims into paying a ransom. It also creates a file titled Read_it_or_Death.txt, which serves as the ransom note. This note demands a payment of 1,000 euros in Bitcoin to provide a decryption tool, warning that failure to comply will result in compromising personal information being leaked online and to the authorities.

Orion Hackers Ransomware is a notorious malware strain based on the LockBit 3.0 (LockBit Black) ransomware. Designed to encrypt valuable data on infected devices, this ransomware demands a ransom for the decryption keys it claims will unlock affected files. Upon infecting a system, Orion Hackers appends a unique file extension consisting of a random character string to all encrypted files, making them inaccessible without proper decryption. For instance, a file named 1.jpg would be altered to appear as 1.jpg.3OYkmrLQx, rendering it useless until decryption occurs. The encryption methodology employed by Orion Hackers is highly sophisticated, typically using robust algorithms such as AES-256 in conjunction with RSA-2048, making it infeasible to crack without the attacker’s private key. A hallmark of this ransomware is that, upon encryption, it delivers a ransom note titled [random_string].README.txt on the compromised system's desktop, often coupled with a change in the desktop wallpaper to further emphasize the gravity of the situation.

V (Dharma) Ransomware is a type of malicious software that belongs to the notorious Dharma ransomware family. This ransomware encrypts files and appends a distinctive file extension, specifically .V, to the compromised files. When a file such as document.doc is encrypted, it is renamed to something like document.doc.id-XXXXXXXX.[attacker_email].V, where the "id-XXXXXXXX" represents the victim's unique identification key, and the email address directs victims to the contact point for ransom negotiations. The encryption process involves sophisticated algorithms that effectively lock the victim's files, rendering them inaccessible without an appropriate decryption key. As part of its modus operandi, the ransomware also creates a ransom note typically named info.txt and a pop-up message that appears on the victim's desktop, detailing the demands and steps to communicate with the attackers.

Core (Makop) Ransomware is a highly disruptive form of malware belonging to the Makop ransomware family. It specifically targets data encryption, rendering victims' files inaccessible unless a ransom is paid. Upon infection, the ransomware encrypts the victim's files using complex encryption algorithms, appending each file with a unique identifier, the threat actors' email address, and a .core extension, such as transforming example.jpg into example.jpg.[unique-ID].[email].core. Accompanying this malicious transformation, the ransomware leaves behind a ransom note in a text file named +README-WARNING+.txt on the victim's desktop. This note warns users that trying to decrypt their data through any means other than with the attackers' assistance could lead to irreversible data loss. Victims are instructed to contact the attackers via email to receive instructions, with a strong emphasis on the futility and potential risk of alternative decryption attempts.

Cloak Ransomware is a sophisticated form of malware designed to extort victims by encrypting valuable data on their systems and demanding payment for its decryption. Once it infiltrates a computer, it encrypts files and appends them with a distinct .crYpt extension, signifying their compromised status. For instance, a file named document.docx would be transformed into document.docx.crYpt. Employing robust cryptographic algorithms, Cloak Ransomware effectively locks data, making recovery challenging without the attacker's decryption key. Upon encrypting files, it generates a ransom note, typically named readme_for_unlock.txt, which is dropped into affected directories, including the desktop. This note informs victims that their files have been encrypted and provides instructions for purchasing the decryption key, usually involving cryptocurrency payments via a Tor network website to maintain anonymity.