That is 2664.rar にはDLKeyが設定されています
COMMENT[DLKey]
DATE21/07/18(Sun),01:52:54
SIZE50.8MB (53253054bytes)
ORGMIMEapplication/octet-stream
ORGNAMEDev 3-4.rar
DLKey:

That's ローダーに戻る