From thehackernews.com
![ransomware malware](https://thehackernews.com/images/-zc1PNnrY9Fw/YKdy6KLBfgI/AAAAAAAACmU/zF6OAVlgp3oHei2gYxwBN53U6TaU0zpbwCLcBGAsYHQ/s728-e1000/ransomware-malware.jpg)
Microsoft on Thursday warned of a “massive email campaign” that’s pushing a Java-based STRRAT malware to steal confidential data from infected systems while disguising itself as a ransomware infection.
“This RAT is infamous for its ransomware-like behavior of appending the file name extension .crimson to files without actually encrypting them,” the Microsoft Security Intelligence team said in a series of tweets.