mfc42u.dll
MFCDLL Shared Library - Retail Version file version info
Library on Windows 2 known copies with hashes 1 Sigma rule names it
Is it the real mfc42u.dll?
Original name
MFC42.DLL in the file’s header: a renamed copy still carries itInstalled in
C:\Windows\system32\C:\Windows\SysWOW64\Signed byMicrosoft Windows
ProductMicrosoft (R) Visual C++, Microsoft Corporation
DescriptionMFCDLL Shared Library - Retail Version
2 known copies
6.06.8063.0 · C:\Windows\SysWOW64\mfc42u.dll · signed by Microsoft Windows
4ef5ced61c3ae80323d96c2ae77a28e62cb6c4e596de6696248b79a98ba404ba6.06.8063.0 · C:\Windows\system32\mfc42u.dll · signed by Microsoft Windows
a722a348526523b7fbc85a1ca3c2101b351a4134ed31bcafff311ac220898fdaFrom 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 mfc42u.dll in 1 rule, for every kind of event; none is a process creation rule CmdID evaluates, so none is listed.