• Home
  • Cyber Crime
  • Cyber warfare
  • APT
  • Data Breach
  • Deep Web
  • Digital ID
  • Hacking
  • Hacktivism
  • Intelligence
  • Internet of Things
  • Laws and regulations
  • Malware
  • Mobile
  • Reports
  • Security
  • Social Networks
  • Terrorism
  • ICS-SCADA
  • POLICIES
  • Contact me
MUST READ

Athlete or Hacker? Russian basketball player accused in U.S. ransomware case

 | 

U.S. CISA adds Citrix NetScaler ADC and Gateway flaw to its Known Exploited Vulnerabilities catalog

 | 

UK NCA arrested four people over M&S, Co-op cyberattacks

 | 

PerfektBlue Bluetooth attack allows hacking infotainment systems of Mercedes, Volkswagen, and Skoda

 | 

Qantas data breach impacted 5.7 million individuals

 | 

DoNot APT is expanding scope targeting European foreign ministries

 | 

Nippon Steel Solutions suffered a data breach following a zero-day attack

 | 

Iranian group Pay2Key.I2P ramps Up ransomware attacks against Israel and US with incentives for affiliates

 | 

Hackers weaponize Shellter red teaming tool to spread infostealers

 | 

Microsoft Patch Tuesday security updates for July 2025 fixed a zero-day

 | 

Italian police arrested a Chinese national suspected of cyberespionage on a U.S. warrant

 | 

U.S. CISA adds MRLG, PHPMailer, Rails Ruby on Rails, and Synacor Zimbra Collaboration Suite flaws to its Known Exploited Vulnerabilities catalog

 | 

IT Worker arrested for selling access in $100M PIX cyber heist

 | 

New Batavia spyware targets Russian industrial enterprises

 | 

Taiwan flags security risks in popular Chinese apps after official probe

 | 

U.S. CISA adds Google Chromium V8 flaw to its Known Exploited Vulnerabilities catalog

 | 

Hunters International ransomware gang shuts down and offers free decryption keys to all victims

 | 

SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 52

 | 

Security Affairs newsletter Round 531 by Pierluigi Paganini – INTERNATIONAL EDITION

 | 

North Korea-linked threat actors spread macOS NimDoor malware via fake Zoom updates

 | 
  • Home
  • Cyber Crime
  • Cyber warfare
  • APT
  • Data Breach
  • Deep Web
  • Digital ID
  • Hacking
  • Hacktivism
  • Intelligence
  • Internet of Things
  • Laws and regulations
  • Malware
  • Mobile
  • Reports
  • Security
  • Social Networks
  • Terrorism
  • ICS-SCADA
  • POLICIES
  • Contact me
  • Home
  • Breaking News
  • Malware
  • RensenWare ransomware – You will decrypt files only scoring .2 Billion in TH12 Game

RensenWare ransomware – You will decrypt files only scoring .2 Billion in TH12 Game

Pierluigi Paganini April 08, 2017

The rensenWare ransomware rather than demanding money, it requires the victims to score “over 0.2 billion” playing “TH12 game.

Security experts at MalwareHunterTeam have spotted a new ransomware dubbed ‘rensenWare’. The ransomware is very strange, rather than demanding money, it requires the victims to score “over 0.2 billion” playing “TH12 — Undefined Fantastic Object”.

The RensenWare ransomware would scan a machine for certain file types and used the AES-256 to encrypt the files. When the malware encrypts a file it would append the .RENSENWARE extension to it.

When RensenWare ransomware completes the file encrytion, it displays a ransom note featuring Captain Minamitsu Murasa from the Touhou Project series of shooting games made by Team Shanghai Alice.

The ransomware note tells the victims that they must score over .2 billion in the Lunatic level of a Touhou Project game called TH12 ~ Undefined Fantastic Object. If the victim does not reach that score or close the ransomware, he will not able to rescue the files forever.

“That’s easy. You just play TH12 ~ Undefined Fantastic Object and score over 0.2 billion in LUNATIC level. this application will detect TH12 process and score automatically. DO NOT TRY CHEATING OR TEMRMINATE THIS APPLICATION IF YOU DON’T WANT TO BLOW UP THE ENCRYPTION KEY!” reads the ransom note.

Found a surprising ransomware today: "rensenWare".
Not asks for any money, but to play a game until you reach a score – and it's not a joke. pic.twitter.com/Pu53WZFALA

— MalwareHunterTeam (@malwrhunterteam) April 6, 2017

“A new ransomware called RensenWare was discovered today by MalwareHunterTeam that makes a unique ransom demand;  score over 0.2 billion in the LUNATIC level of TH12 ~ Undefined Fantastic Object or kiss your files goodbye!” wrote Lawrence Abrams from BleepingComputers. “While I do not think this ransomware was ever meant to be distributed, it shows what a creative developer can do to torment their victims.”

The RensenWare ransomware will monitor the gaming progress of the victim by looking for a process called “th12.” The malware reads the processes memory to determine the current score and level of the game. When the victim reaches the Lunatic level and has scored over .2 billion points, the ransomware will save the key to the Desktop and initiate the decryption process.

Lawrence Abrams excludes that the rensenWare ransomware was developed for criminal purposes, “this program was most likely created as a joke. Regardless of the reasons, it illustrates another new and innovative way that a ransomware can be developed.”

During the encryption operation, the malware doesn’t try to delete shadow volumes or make any other action to prevent a victim from restoring their files. This suggests the ransomware was created as a joke or to only disturb a specific group of people.

The author of the ransomware Tvple Eraser explained its intent with a message shared on Twitter:

https://twitter.com/0x00000Ff/status/850332408847024128

The rensenWare ransomware demonstrates the great creativity of the community of malware coders, the experts have no doubt, we will see many other ‘creative’ themes the future.

This malware doesn’t represent a threat, but it has the potential to become it.

[adrotate banner=”9″]

Pierluigi Paganini

(Security Affairs – RensenWare, ransomware)


facebook linkedin twitter

Gaming malware RensenWare ransomware

you might also like

Pierluigi Paganini July 11, 2025
U.S. CISA adds Citrix NetScaler ADC and Gateway flaw to its Known Exploited Vulnerabilities catalog
Read more
Pierluigi Paganini July 10, 2025
UK NCA arrested four people over M&S, Co-op cyberattacks
Read more

leave a comment

newsletter

Subscribe to my email list and stay
up-to-date!

    recent articles

    Athlete or Hacker? Russian basketball player accused in U.S. ransomware case

    Uncategorized / July 11, 2025

    U.S. CISA adds Citrix NetScaler ADC and Gateway flaw to its Known Exploited Vulnerabilities catalog

    Hacking / July 11, 2025

    UK NCA arrested four people over M&S, Co-op cyberattacks

    Cyber Crime / July 10, 2025

    PerfektBlue Bluetooth attack allows hacking infotainment systems of Mercedes, Volkswagen, and Skoda

    Hacking / July 10, 2025

    Qantas data breach impacted 5.7 million individuals

    Data Breach / July 10, 2025

    To contact me write an email to:

    Pierluigi Paganini :
    pierluigi.paganini@securityaffairs.co

    LEARN MORE

    QUICK LINKS

    • Home
    • Cyber Crime
    • Cyber warfare
    • APT
    • Data Breach
    • Deep Web
    • Digital ID
    • Hacking
    • Hacktivism
    • Intelligence
    • Internet of Things
    • Laws and regulations
    • Malware
    • Mobile
    • Reports
    • Security
    • Social Networks
    • Terrorism
    • ICS-SCADA
    • POLICIES
    • Contact me

    Copyright@securityaffairs 2024

    We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept All”, you consent to the use of ALL the cookies. However, you may visit "Cookie Settings" to provide a controlled consent.
    Cookie SettingsAccept All
    Manage consent

    Privacy Overview

    This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities...
    Necessary
    Always Enabled
    Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
    Non-necessary
    Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.
    SAVE & ACCEPT