X1881 Ransomware
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| Threat Level: | 80 % (High) |
| Infected Computers: | 8 |
| First Seen: | October 16, 2017 |
| Last Seen: | May 22, 2023 |
| OS(es) Affected: | Windows |
The X1881 Ransomware is an encryption ransomware Trojan that was first observed on October 16, 2017. Ransomware Trojans like the X1881 Ransomware are designed to take the victim's files hostage. To do this, these threats will encrypt the victim's files using a strong encryption algorithm. Then, the X1881 Ransomware and similar threats demand a ransom payment from the victim to deliver the decryption key that the victim will need to restore the affected files. These threats are becoming common increasingly, and it is mandatory that computer users take steps to protect their data from the X1881 Ransomware and similar threats.
Table of Contents
The Alarming Consequences of a X1881 Ransomware Infection
The X1881 Ransomware is based on the CryptMix Ransomware, a ransomware Trojan that has already spawned some variants since the summer of 2017. The team responsible for the X1881 Ransomware attack has been creating ransomware variants since at least May 2016 actively. The X1881 Ransomware carries out a typical encryption ransomware attack, encrypting the victims' files. The files encrypted by the X1881 Ransomware attack will be flagged with the file extension '.x1881,' appended to the final of each affected file's name. The X1881 Ransomware also will rename the affected files, replacing their names with a sequence of thirty-two random characters.
How the X1881 Ransomware Carries out Its Attack
The X1881 Ransomware uses a combination of the AES and RSA encryptions to make the victim's files inaccessible. This is an encryption method that has been observed in other, similar attacks repeatedly. The X1881 Ransomware will encrypt a wide variety of file types, including files with the following extensions:
.aif, .apk, .arj, .asp, .bat, .bin, .cab, .cda, .cer, .cfg, .cfm, .cpl, .css, .csv, .cur, .dat, .deb, .dmg, .dmp, .doc, .docx, .drv, .gif, .htm, .html, .icns, .iso, .jar, .jpeg, .jpg, .jsp, .log, .mid, .mp3, .mp4, .mpa, .odp, .ods, .odt, .ogg,.part, .pdf, .php, .pkg, .png, .ppt, .pptx, .psd, .rar, .rpm, .rss, .rtf, .sql, .svg, .tar.gz, .tex, .tif, .tiff, .toast, .txt, .vcd, .wav, .wks, .wma, .wpd, .wpl, .wps, .wsf, .xlr, .xls, .xlsx, .zip.
The X1881 Ransomware delivers its ransom note in the form of a text file named '_HELP_INSTRUCTION.TXT,' which is dropped on the infected computer's desktop after the encryption of the victim's files. The X1881 Ransomware also will delete the Shadow Volume Copies of the affected files (which can often be used to restore files encrypted by these attacks) and will attempt to disable other possible alternate recovery options on the infected computer. Once the X1881 Ransomware encrypts the victim's files, it delivers the following ransom note to the victim's computer, both in its text file and as a pop-up window:
'Hello!
Attention! All Your data was encrypted!
For specific informartion, please send us an email with Your ID number:
x1881@tuta.io
x1883@yandex.com
x1881@protonmail.com
x1884@yandex.com
Please send email to all email addresses! We will help You as soon as possible!
DECRYPT-ID-[RANDOM CHARACTERS] number'
Dealing with the X1881 Ransomware Trojan
PC security researchers are very positive when they advise computer users to refrain from contacting the X1881 Ransomware's developers through email or following the X1881 Ransomware's instructions. It is very unlikely that the people responsible for the X1881 Ransomware attack will help computer users recover their data, and they are just as likely to ask for more money or simply ignore the victim. Instead of attempting to negotiate with the people responsible for these attacks, PC users should take precautions against encryption ransomware Trojans. Precautionary measures are important because the encryption type used by the X1881 Ransomware attack and similar ransomware Trojans is quite strong especially, and the files encrypted by these attacks cannot be restored without the decryption key. The best protection, therefore, is to have backup copies of all affected files. Every computer users should have backup copies of their files on the cloud or on a device that a threat cannot scan. The use of a good backup system, combined with a reliable security application can help computer users prevent the X1881 Ransomware attack and recover any affected data quickly.
