Analysis of Ransomware Epidemic In February 2019 [source: 360totalsecurity]

With the spread of Ransomware, Both company and individual have suffered serious threats. 360 Security Brain has comprehensively monitored and defended against the ransomware. The feedback on anti-ransomware services increased slightly, mainly due to the addition of several popular ransomwares in this month.

360 Total Security Ransomware Decryption Tool added GandCrab ransomware (Version 5.0.4 and 5.1), Aurora ransom (suffixed with Aurora, desu, cryptoid), CrazyCrypt ransom (version 2.1, 3.19 and 4.1), The latest variant of Satan (suffixed with evopro) and the decryption for the latest variant of KeyPass/Stop (suffixed as promok).

Infection data analysis

According to the analysis of the infection data of the mainstream ransomware in this month, the amount of infection in February 2019 increased slightly compared with January. The main reason is that the GandCrab ransomware began to spread through the Trojan-hang website after Chinese New Year Holiday, causing a large number of users to be infected while visiting the hang-up site during the process of browsing the web.

360 anti-ransomware service statistics show that there have been two significant increases in feedback this month. The first feedback volume rose after Chinese New Year Holiday and peaked on February 14. The increase in feedback was mainly affected by the holiday; the second feedback increased from February 20 and peaked on the 25th. Feedback gains were mainly affected by updates from the GandCrab ransomware family version.

In the February 2019 ransomware feedback, the family share ratio statistics show that the GandCrab ransomware family is still the most popular ransom virus, closely to 50%. This is followed by a 26% of the GlobeImposter ransom family and 16% of the Crysis ransom family. The amount of KeyPass/Stop has increased significantly this month compared to other months, and added the spread of Aurora and Blower ransomware.

Analysis of the infected system found that the top three are still Windows 7, Windows Server 2008 and Windows 10. Among them, the Windows 7 system ranks first in all system versions with 55%, and is up 5% compared to 50% in January 2019.

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