CmdID

CmdID / Files

WindowsCodecs.dll

Microsoft Windows Codecs Library file version info

Library on Windows 2 known copies with hashes 1 Sigma rule names it

Is it the real WindowsCodecs.dll?

file version info and known copies
Original nameWindowsCodecs in the file’s header: a renamed copy still carries it
Installed inC:\Windows\system32\
C:\Windows\SysWOW64\
Signed byMicrosoft Windows
ProductMicrosoft Windows Operating System, Microsoft Corporation
DescriptionMicrosoft Windows Codecs Library

2 known copies

10.0.19041.388 (WinBuild.160101.0800) · C:\Windows\SysWOW64\WindowsCodecs.dll · signed by Microsoft Windows

1b29675f3466578967d16fd3a679b22719e0384c10f91159726e38dde7b5b3c1

10.0.19041.388 (WinBuild.160101.0800) · C:\Windows\system32\WindowsCodecs.dll · signed by Microsoft Windows

5162bd246cff9eb7bfd55ec3ad53107bd1a353180914cdb235e717b1688d2c66

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