CmdID

CmdID / Files

browser_assistant.exe

Opera Browser Assistant file version info

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

Opens CmdID with your command. It is read in your browser and sent nowhere.

Is it the real browser_assistant.exe?

file version info and known copies
Installed inC:\Program Files\Opera\assistant\
Signed byOpera Software AS
ProductOpera Browser Assistant, Opera Software
DescriptionOpera Browser Assistant

2 known copies

81.0.4196.31 · C:\Program Files\Opera\assistant\browser_assistant.exe · signed by Opera Software AS

d79476f82522cd77aa9a0eb13799ab44153784d5f6f2ba8a33d24da46be9766c

71.0.3770.171 · C:\Program Files\Opera\assistant\browser_assistant.exe · signed by Opera Software AS

882d11a5d9f605bbe27168cd2aa302df52cfff12c792234d32a7c54cd976ca2a

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