hunt_memory_evtmutehook.yara

rule Hunt_EvtMuteHook_Memory {
meta:
 description = "memory hunt for default wevtsv EtwEventCallback hook pattern to apply to eventlog svchost memory dump"
 reference = "https://blog.dylan.codes/pwning-windows-event-logging/"
 author = "SBousseaden"
 date = "2020-09-05"
strings:
 $a = {49 BB ?? ?? ?? ?? ?? ?? ?? ?? 41 FF E3 54 24 20 4C 8B 05 61 CB 1A 00 0F 57 C0 66 0F 7F 44 24 20 E8 5B 0A 00 00 48 83 C4 38 C3}
 $b = {48 83 EC 38 4C 8B 0D 65 CB 1A 00 48 8D 54 24 20 4C 8B 05 61 CB 1A 00 0F 57 C0 66 0F 7F 44 24 20 E8 5B 0A 00 00 48 83 C4 38 C3}
condition: $a and not $b
}