CmdID

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msIso.dll

Isolation Library for Internet Explorer file version info

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

Is it the real msIso.dll?

file version info and known copies
Installed inC:\Windows\system32\
C:\Windows\SysWOW64\
Signed byMicrosoft Windows
ProductInternet Explorer, Microsoft Corporation
DescriptionIsolation Library for Internet Explorer

2 known copies

11.00.19041.488 (WinBuild.160101.0800) · C:\Windows\SysWOW64\msIso.dll · signed by Microsoft Windows

d8217c720deac2628efe60927461c14c977ab03b9bf502fdee2064baa51f0a9d

11.00.19041.488 (WinBuild.160101.0800) · C:\Windows\system32\msIso.dll · signed by Microsoft Windows

d931588a07839ab3e56e02ca6b41eb31408629258079ca7d3508b2ea400b9d09

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