That is 3764.zip にはDLKeyが設定されています
COMMENT[DLKey]
DATE21/09/16(Thu),03:09:02
SIZE688KB (705516bytes)
ORGMIMEapplication/x-zip-compressed
ORGNAMEIxaMokoPack22.2021.09.16.zip
DLKey:

That's ローダーに戻る