Blackmail $300 Bitcoin! Many university campus networks are black

(Original title: Bitcoin extortion broke out! The campus network of Xiasha University has been hacked

A classmate of Hangzhou Normal University after computer poisoning screen. Here shows: Please pay $300 equivalent Bitcoin to this address.

Source: City Express Author: Reporters Hu Xinchang Lin Bibo Edit: As Lee Dong / strong>

Last night, many college campuses in Xiasha were blacked out

Students receive a letter:

To unlock the documents on your computer, please pay $300 equivalent Bitcoin

At 11 o'clock last night, a Ms. Chen reported to the Express: About an hour ago, the campus network of Xiasha Higher Education Park was hacked. The data file on the student's computer is locked and you need to pay to unlock it. At present, there are Zhe Chuan, Metrology, University of Science and Technology... many campus campus networks have been darkened.

Tang’s student was a virus at about 8 last night.

He said: "I put video on the bedroom computer at night and went out for a while. After I came back, I discovered that there was a move in the computer. A ransom letter was displayed on the computer desktop. In this letter, you can choose to display the language, Chinese, Korean, In both Japanese and English, the letter basically says that if you want to unlock the documents on your computer, you have to pay US$ 300 worth of Bitcoin.The above also threatens that if you do not pay within a week, you will never be able to recover files.

"I turned off the virus display window, but after a while, the virus window jumped out again. Check my computer and find out that my computer's documents including word, MP3, and ppt have all been locked. Now I There was no way to prepare the system for reinstallation, after all, I couldn't afford such a lot of money, but it was a pity that I did the music.

"My roommate also had the same virus. We used the same campus network, that is, the kind of network that would break down at night."

Cheng Cheng of Zhejiang Gongshang University said: “In the past two days, many people in my circle of friends are talking about this issue. Many people are complaining that the virus has locked doc, ppt and other documents in the computer. There is no way to open the file. I know the schools involved include Ningbo University, Zhejiang University of Traditional Chinese Medicine, Zhejiang Gongshang University, and Zhejiang Sci-Tech University."

Yesterday, the WeChat public number of many universities had issued early warning information, saying that the campus network of many universities in China and students’ computers had been infected during this time. Remind everyone not to click on unknown links and install anti-virus software.

Mr. Li said that around 3 pm yesterday, he visited an internet company in Yuhang District and heard a staff member say that in the afternoon, the network of a world-class Internet company in Hangzhou was attacked by hackers, and it could not reach the server. At 4 o'clock in the afternoon, when Mr. Li left, the server was not connected.

What is Bitcoin?

Bitcoin is a kind of virtual currency that is not issued by a specific institution and is generated by a large number of calculations based on a specific algorithm. You can buy real or virtual items, or you can redeem them into the currencies of most countries.

What is Bitcoin Hacking Virus?

According to the Baidu Encyclopedia, CTB-Locker was introduced to China as early as the beginning of 2015, followed by explosive propagation. The virus remotely encrypts the user's computer files, thus extorting the ransom from the user. The user can only open the file after paying the ransom.

The extortion amount of its latest variant is 3 bitcoins, approximately RMB 6,000. The virus is disguised as an e-mail attachment. Once the victim clicks to run, an English document similar to "order details" will pop up. At this time, the virus has run quietly in the background of the system and will begin to attack after 10 minutes.

Where does the Bitcoin extortion virus come from?

CTB-Locker is one of the most widespread virus families in the world, and the FBI has also been involved in the investigation. However, because the virus uses an anonymous network and bitcoin transactions to obtain ransom anonymously, it is difficult to track and locate the initiator of the virus. At present, the virus culprit is still at large.

According to Reuters, the author of the “bitcoin blackmailer” Trojan family is Ivgeniyah Mikhailovich Bogchev, a Russian hacker who is on the list of the top ten hackers wanted by the FBI. Ranked second.

There were schools posting notices suggesting that teachers and students guard against viruses

On May 9, a school posted a notice detailing the dangers of Bitcoin's extortion virus and provided solutions.

Virus Type: Blackmailer Virus

Ransomware attack patterns: exploit kits, puddle attacks, malicious advertisements, or large-scale phishing campaigns.

Infection: mail, web pages, flash play, etc.

Virus hazards: Once an extortion virus launches an attack and the attack is successful, the loss is almost unstoppable. The files in the infected computer are encrypted as sage files, and a ransom of ten thousand yuan is required to recover the data. However, it may happen that the ransom payment is cheated.

Solution: At present, there is no effective solution. Only the system can be reinstalled, but the infected files cannot be recovered.

Coping methods: 1. Data backup and recovery measures are important tasks for recovering losses from blackmail incidents. It is recommended that all teachers make timely backups or cloud backups of important file data to prevent loss due to infection.

2. Make sure the computer firewall you are using is turned on.

3. Do not easily open unknown emails or links.

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