npmproxy.dll
Network List Manager Proxy file version info
Library on Windows 2 known copies with hashes 1 Sigma rule names it
Is it the real npmproxy.dll?
Original name
npfproxy.dll in the file’s header: a renamed copy still carries itInstalled in
C:\Windows\system32\C:\Windows\SysWOW64\Signed byMicrosoft Windows
ProductMicrosoft Windows Operating System, Microsoft Corporation
DescriptionNetwork List Manager Proxy
2 known copies
10.0.19041.423 (WinBuild.160101.0800) · C:\Windows\system32\npmproxy.dll · signed by Microsoft Windows
f67a5d1145ee905236ed8df8bd1c2545d24eb4b925aad8643f53a7fbab8c759110.0.19041.117 (WinBuild.160101.0800) · C:\Windows\SysWOW64\npmproxy.dll · signed by Microsoft Windows
b7fabd4735521d38a023b26545833d00d6ce571aedf818870aab5773fd296a4cFrom the file’s version info and the copies recorded by xCyclopedia (MIT). A copy in another folder, signed by someone else or with another hash is not necessarily malicious, but it is worth a closer look. In Ceplin, "<sha256>".whatis() says which known copy a hash is.
What detects it
Sigma names npmproxy.dll in 1 rule, for every kind of event; none is a process creation rule CmdID evaluates, so none is listed.