'.kukaracha File Extension' Ransomware
Threat Scorecard
EnigmaSoft Threat Scorecard
EnigmaSoft Threat Scorecards are assessment reports for different malware threats which have been collected and analyzed by our research team. EnigmaSoft Threat Scorecards evaluate and rank threats using several metrics including real-world and potential risk factors, trends, frequency, prevalence, and persistence. EnigmaSoft Threat Scorecards are updated regularly based on our research data and metrics and are useful for a wide range of computer users, from end users seeking solutions to remove malware from their systems to security experts analyzing threats.
EnigmaSoft Threat Scorecards display a variety of useful information, including:
Popularity Rank: The ranking of a particular threat in EnigmaSoft’s Threat Database.
Severity Level: The determined severity level of an object, represented numerically, based on our risk modeling process and research, as explained in our Threat Assessment Criteria.
Infected Computers: The number of confirmed and suspected cases of a particular threat detected on infected computers as reported by SpyHunter.
See also Threat Assessment Criteria.
| Threat Level: | 20 % (Normal) |
| Infected Computers: | 134 |
| First Seen: | November 21, 2016 |
| Last Seen: | September 3, 2026 |
| OS(es) Affected: | Windows |
The '.kukaracha File Extension' Ransomware and numerous other variants in the same family of ransomware are currently being used in attacks against computer users. The '.kukaracha File Extension' Ransomware identifies the files that have been corrupted in the attack with the extension '.kukaracha.' The '.kukaracha File Extension' Ransomware uses a typical encryption ransomware Trojan attack, encrypting the victim's files and demanding the payment of a ransom from the victim. The '.kukaracha File Extension' Ransomware may be distributed using corrupted spam email attachments. The corrupted files being used to distribute the '.kukaracha File Extension' Ransomware have been identified in many cases as files disguised as spreadsheet documents through the use of double extensions (to mask the corrupted file's real extension).
The Infection Vectors that may be Used by the '.kukaracha File Extension' Ransomware
PC security analysts strongly advise computer users to take steps to confirm the origin of any email attachments they receive before they open and run them. Even if the email appears to come from a trusted source, PC security researchers advise computer users to confirm via a phone call or in person if there seems to be anything suspicious about the email or email attachment before opening it. The '.kukaracha File Extension' Ransomware seems to be targeted towards computer users in Russia. The '.kukaracha File Extension' Ransomware uses an AES-256 encryption algorithm to make the victim's files inaccessible. Once the '.kukaracha File Extension' Ransomware has encrypted the victim's files, identifying them with the addition of the before mentioned extension, they cannot be opened without the decryption key.
How the '.kukaracha File Extension' Ransomware Carries out Its Attack
The '.kukaracha File Extension' Ransomware will encrypt all data on the victim's computer, including data contained on local drives, removable storage and shared folders. Once the '.kukaracha File Extension' Ransomware has encrypted the victim's data, it drops its ransom note in the form of text and HTA files, which display a pop-up message. The following message has been associated with variants of the '.kukaracha File Extension' Ransomware:
'ВАШИ ФАЙЛЫ БЫЛИ ЗАШИФРОВАНЫ!
Если вы хотите их восстановить то отправьте один из пострадавших файлов и файл Кеу.Ып (из любой папки с зашифрованными файлами) на е-mai1: the [email address] Если вы не получили ответа в течение суток то скачайте с сайта https://www.torproject.org/download/download-easy.html.en ТОР браузер и зайдите с его помощью на сайт [site on the Dark Web] - там будет указан действующий почтовый ящик.
Iопытки самостоятельно расшифровать файлы приведут к их безвозвратной порче!'
The text of this message translated into English reads as follows:
'Your files have been encrypted!
If you want to restore them, send one of the affected files and Key. Your file (from any folder with encrypted files) by e-mai1: [email address] If you have not received a response within a day then download from the website https: / /www.torproject.org/download/download-easy.html.en TOР browser and use it to load the website [site on the Dark Web] - there will be indicated the current mailbox.
Independent attempt at decrypting the files will lead to their irrevocable damage!'
Dealing with a '.kukaracha File Extension' Ransomware Infection
If your files have been encrypted by the '.kukaracha File Extension' Ransomware, PC security analysts strongly advise against paying the '.kukaracha File Extension' Ransomware's ransom. There is little likelihood that the people responsible for the '.kukaracha File Extension' Ransomware attack will return the victim's access to their files. In many cases, they will simply ask for more money or ignore the victim completely. Instead of paying the '.kukaracha File Extension' Ransomware ransom, malware analysts advise computer users to restore the affected files from a backup location. Having backups of all files is the best protection against ransomware like the '.kukaracha File Extension' Ransomware, completely undermining the whole purpose of the '.kukaracha File Extension' Ransomware attack. A reliable security program and good email handling protocols also should be used to prevent the '.kukaracha File Extension' Ransomware attacks.
Analysis Report
General information
| Family Name: | Adware.Linkury.DB |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
55c36f42c7e58f394dda5f1c58c08ef8
SHA1:
208e4f1402935e10c8e7711f9dc0ba464faebf41
SHA256:
5F606E4A51C1F0859C7D62614BDB6A28BAF64F76333E9B4D31D55572A4F59DC7
File Size:
965.12 KB, 965120 bytes
|
Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File doesn't have debug information
- File doesn't have exports table
- File doesn't have security information
- File is 32-bit executable
- File is either console or GUI application
- File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
- File is Native application (NOT .NET application)
- File is not packed
- IMAGE_FILE_DLL is not set inside PE header (Executable)
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- IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)
File Traits
- HighEntropy
- No Version Info
- x86
Block Information
Block Information
During analysis, EnigmaSoft breaks file samples into logical blocks for classification and comparison with other samples. Blocks can be used to generate malware detection rules and to group file samples into families based on shared source code, functionality and other distinguishing attributes and characteristics. This section lists a summary of this block data, as well as its classification by EnigmaSoft. A visual representation of the block data is also displayed, where available.| Total Blocks: | 434 |
|---|---|
| Potentially Malicious Blocks: | 37 |
| Whitelisted Blocks: | 393 |
| Unknown Blocks: | 4 |
Visual Map
? - Unknown Block
x - Potentially Malicious Block
