It is 564E36A29E02897F48E11F46315ADB840C268E3E.hfs
You need the file expression_table_evy_common.tx*****mp in there.
For "Mark Of Death" it's DeadSign_Range and DeadSign_MaxNum .
For "Bloody Thread" it's DeadString_Range and DeadString_MaxNum .
Bloody Thread works a little buggy though. It may mark any maps on the map but depending on the difference of the height of each enemy you will sometimes not be able to activate the skill after you have marked them.
There's also another file where you can edit the damage of those attacks but it's not in the 564E36A29E02897F48E11F46315ADB840C268E3E.hfs one.