![]() ![]() Infected email attachments (macros), torrent websites, malicious ads.Īll files are encrypted and cannot be opened without paying a ransom. Cyber criminals demand payment of a ransom (usually in bitcoins) to unlock your files. A ransom demand message is displayed on your desktop. Threat Summary: NameĪvast (Win32:Trojan-gen), Combo Cleaner (2E4C7A), ESET-NOD32 (A Variant Of Win32/), Kaspersky (HEUR:), Microsoft (Ransom:Win32/Zeppelin.A!MSR), Full List Of Detections ( VirusTotal)Ĭannot open files stored on your computer, previously functional files now have a different extension (for example, my.docx.locked). When the files are opened - the infection chain is triggered. Virulent files can be archives, executables, PDF and Microsoft Office documents, JavaScript, etc. ![]() These letters can have infectious files attached to or linked inside them. Malware is also spread through email spam campaigns. Fraudulent updaters infect systems by abusing outdated program flaws and/or by installing malicious software. ![]() "Cracking" tools can cause system infections instead of activating licensed products. Illegal activation tools ("cracks") and fake updates are also used in distribution. Ransomware and other malware are proliferated via dubious download sources, e.g., unofficial and freeware websites, Peer-to-Peer sharing networks, etc. They have two primary differences in-between - the cryptographic algorithms they use ( symmetric or asymmetric) and the ransom size. Payk, Cutdrywoe, and Bcksz are a few examples of malicious programs within the ransomware classification. Therefore, it is strongly advised to keep backups in several different locations (e.g., remote servers, unplugged storage devices, etc.) - to avoid permanent data loss. The only solution is recovering the data from a backup, if one was created prior and stored elsewhere. However, removal will not restore already affected files. Removing Crypter ransomware from the operating system - will prevent it from further encryptions. What is more, despite paying - victims often do not receive the promised decryption tools. Typically, without the cyber criminals' interference - decryption is impossible. Free decryption of a single file is offered as proof that recovery is impossible. Should victims refuse to do so, the downloaded data will be publicized on the darknet. To restore the data, the note states that a ransom in Bitcoin cryptocurrency - must be paid. The ransom-demanding message informs victims that their data has been encrypted and sensitive content was exfiltrated from the system. Screenshot of files encrypted by Crypter ransomware: Afterwards, a ransom note - " !!! ALL YOUR FILES ARE ENCRYPTED !!!.TXT" - is created on the desktop. For example, a file titled " 1.jpg" would appear similar to " 1.82-F01-67D". It operates by encrypting data (locking files) and demanding payment for the decryption (access recovery).įiles are appended with the ". Crypter is the name of a ransomware-type program. ![]()
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