rule XWorm_v31_Mutex strings: $mutex = "XWorm_31_Global_Mutex" wide ascii $api = "EnumWindows" wide ascii $net = "SendKeys" wide ascii condition: $mutex and $api and $net
As of [Current Month]
Attackers send invoices or legal notices containing .iso or .img files. When mounted, the user sees a .lnk shortcut. Clicking it executes PowerShell to download the XWorm "Crypsi" loader. xworm v31 updated