CmdID / Files

mtxclu.dll

Microsoft Distributed Transaction Coordinator Failover Clustering Support DLL file version info

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

Is it the real mtxclu.dll?

file version info and known copies

Installed inC:\Windows\system32\
C:\Windows\SysWOW64\

Signed byMicrosoft Windows

ProductMicrosoft Windows Operating System, Microsoft Corporation

DescriptionMicrosoft Distributed Transaction Coordinator Failover Clustering Support DLL

2 known copies

2001.12.10941.16384 (WinBuild.160101.0800) · C:\Windows\SysWOW64\mtxclu.dll · signed by Microsoft Windows

b983af6199c1b80a22b1556dbd8ff2ff433900b178278d7a140bdc26d9c66e0c

2001.12.10941.16384 (WinBuild.160101.0800) · C:\Windows\system32\mtxclu.dll · signed by Microsoft Windows

ce0518342050f6d479556e2234527a16295eb497003b889f9d1739bec5dd3bc2

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