rcdll.dll

Microsoft Windows Resource Compiler DLL file version info

Library on Windows 3 known copies with hashes 1 Sigma rule names it

Is it the real rcdll.dll?

file version info and known copies

Installed inC:\Program Files (x86)\Windows Kits\10\bin\10.0.19041.0\arm64\
C:\Program Files (x86)\Windows Kits\10\bin\10.0.19041.0\x64\
C:\Program Files (x86)\Windows Kits\10\bin\10.0.19041.0\x86\

Signed byMicrosoft Corporation

ProductMicrosoft Windows Operating System, Microsoft Corporation

DescriptionMicrosoft Windows Resource Compiler DLL

3 known copies

10.0.19041.1 (WinBuild.160101.0800) · C:\Program Files (x86)\Windows Kits\10\bin\10.0.19041.0\x64\rcdll.dll · signed by Microsoft Corporation

214fdfb377a8ae4213324c65ca1139bf499700f88cc04d9a534b89b04bbbe5ce

10.0.19041.1 (WinBuild.160101.0800) · C:\Program Files (x86)\Windows Kits\10\bin\10.0.19041.0\arm64\rcdll.dll · signed by Microsoft Windows Kits Publisher

4354a85ff6fcbee0751c2decce1aa544a91778bb06cc166bac85a77081c77dda

10.0.19041.1 (WinBuild.160101.0800) · C:\Program Files (x86)\Windows Kits\10\bin\10.0.19041.0\x86\rcdll.dll · signed by Microsoft Corporation

d1a31d347831c90e35688687857de77991b127493a50c1ba6d71402a91fffe38

From 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

Sigma names rcdll.dll in 1 rule, for every kind of event; none is a process creation rule CmdID evaluates, so none is listed.