1、安全厂商发布勒索软件Cerber5新变种分析
标题:Cerber 5.0.1 Arrives with New Multithreading Method
作者信息:Dec 02, 2016 by RSS Sarah Wu, Jacob Leong
//BEGIN
Introduction
A new update of Cerber Ransomware, Cerber 5.0.1, has just arrived, appearing shortly after Cerber 5.0.0. had been released. Cerber 5.0.1 handles
multithreading differently when it comes to encrypting files, probably aiming for better performance. It also changes the instruction file name from
“README.hta” to “_README_.hta”. The intention of this might be to avoid simple AV detection, such as checking instruction file names. The major updates in the new version are described in the following sections.
Cerber的最新版本为5.0.1,与5.0.0相比没有特别大的变化,只是在组态文件的一个变量发生变化:去掉了multithread多线程这一个变量;另外一个变化是指令文件从README变化为_README_,也就是文件名从README.hta变化为_README_.hta。这两个版本的Cerber勒索软件推出的时间间隔还很短。
//END
Conclusion
We have observed a lot of different versions of Cerber variant in these two months. Although Cerber updates its version quite frequently, there was no
significant update until version 5. We will continue to track this family and share any new updates with our readers. Stay tuned!
近两个月来,勒索软件Cerber推出了很多不同的版本,虽然升级很频繁,但是直到5.0版以后,才有显著的变化。
点评:对付勒索软件,建议还是备份备份再备份。 |