/* Yara Rule Set Author: Florian Roth Date: 2016-07-19 Identifier: Mimikittenz */ /* Rule Set ----------------------------------------------------------------- */ rule Invoke_mimikittenz { meta: description = "Detects Mimikittenz - file Invoke-mimikittenz.ps1" author = "Florian Roth" reference = "https://github.com/putterpanda/mimikittenz" date = "2016-07-19" score = 90 hash1 = "14e2f70470396a18c27debb419a4f4063c2ad5b6976f429d47f55e31066a5e6a" strings: $x1 = "[mimikittenz.MemProcInspector]" ascii $s1 = "PROCESS_ALL_ACCESS = PROCESS_TERMINATE | PROCESS_CREATE_THREAD | PROCESS_SET_SESSIONID | PROCESS_VM_OPERATION |" fullword ascii $s2 = "IntPtr processHandle = MInterop.OpenProcess(MInterop.PROCESS_WM_READ | MInterop.PROCESS_QUERY_INFORMATION, false, process.Id);" fullword ascii $s3 = "&email=.{1,48}&create=.{1,2}&password=.{1,22}&metadata1=" ascii $s4 = "[DllImport(\"kernel32.dll\", SetLastError = true)]" fullword ascii condition: ( uint16(0) == 0x7566 and filesize < 60KB and 2 of them ) or $x1 }