System administrators typically manage SPF records using standard tools like nslookup.exe or dig , not a standalone spf.exe file.
It exploits SeImpersonatePrivilege to gain administrative access on a target machine. spf.exe
It is important to distinguish this executable from legitimate SPF-related activities: spf.exe
How to setup a SPF record to prevent spam and spear phishing spf.exe
It may store large amounts of binary data in the registry to maintain persistence. Contextual Confusion