Petya is a family of encrypting ransomware that was first discovered in 2016. The malware targets Microsoft Windows-based systems, infecting the master boot record to execute a payload that encrypts the NTFS file table, demanding a payment in bitcoin in order to regain access to the system. Here’s a summary of the NotPetya outbreak: The malware uses a bunch of tools to move through a network, infecting… Continue reading Petya Ransomware : Initial Analysis
Deleting traces from old devices When you’re getting rid of your old computer, simply deleting your data from it is not enough. Even if you use the format command to wipe the hard disk clean, the data can be recovered using simple, free software. The only way to make sure your data remains inaccessible is… Continue reading Ways to secure yourself against hackers
When acomputer virusinfects a computer, it must make changes tofileson your computer, critical areas like theRegistry, or sections ofmemoryto spread or damage the computer. An antivirus program protects a computer by monitoring all file changes and the memory for specific virus activity patterns. When these known or suspicious patterns are detected, the antivirus warns the… Continue reading How does an antivirus work?
The gap between graphic designers andcoders just got smaller. Until now, if you wanted to build a graphic user interface,whether for app design or custom websites, you would have to enlist a developer to turn yourideas into code. But designers could soon take this power into their own hands. Copenhagen-based startupUlzard Technologieshas developed an app,… Continue reading Neural network which transforms graphic designs into functioning code
A developer has released a tool to fight the WannaCry ransomware, which started affecting PCs worldwide last Friday and has helped hackers gain control over 300,000 systems. The tool released can potentially reverse the effects of the ransomware and free files on a system. The WannaKey software will allow users hit by the WannaCry ransomware and running Windows XP… Continue reading This Free Tool Helps Recover Windows XP PC Hit by WannaCry Ransomware
Ransomware itself typical The actual ransomware component itself is not all that remarkable, it does what ransomware does, encrypts a widerange of files and demands ransom, to be paid in bitcoins in a most insistent way. Here is a list of some of the files it encrypts. Expect more of the same to come What… Continue reading Wannacry: Detailed analysis (part 3 of 3)
Unpacking the PE file from the launcher If we unpack the PE file manually, it shows several layers. Any tool that dumps the resource (.rsrc) section of a PE file can be used. The file “R-1381” is the embedded PE file in the launcher. Running “R-1381” against the .rsrc dumper, we can see that it… Continue reading Wannacry : Detailed analysis ( part 2 of 3 )