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Lockdown Microsoft Edge

Hello @all,

I have a small problem regarding InterceptX Endpoint on some of my PCs in a branch office.

As soon as I start Microsoft Edge the Endpoint Protection delivers a notification saying there has been a 'Lockdown Exploit' in Edge.

However after a few minutes I get a notification in my central saying there was nothing to delete in the path of MS Edge.

Do you have any suggestions on how to handle this?



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  • Hello quasar,

    Thank you for reaching out to the Sophos Community. 

    An initial step you can try is deploying the "Hotfix Package" for Intercept X onto the affected device. 

    If this still does not work, I'd recommend creating a new "Threat Protection policy" to be applied to the affected device. Within the new policy, you can try turning off certain protection features under "Runtime Protection", specifically "Protect web browsers" to see if you can find a usable configuration that will allow the app to work. This can be used as a work-around for the time being. 

    Can you check the Windows Application Event Viewer and filter by Event ID 911? If you're able to find an entry that corresponds with the lockdown detection, please paste the contents of the log entry here. 

    Kushal Lakhan
    Team Lead, Global Community Support
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  • Hello Qoosh,

    I found a entry regarding PID 911.

    Mitigation   Lockdown
    Timestamp    2021-11-09T15:10:13

    Platform     10.0.19043/x64 v523 06_9e-
    PID          14044
    Application  C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    Created      2021-05-22T11:10:56
    Modified     2021-11-04T08:54:54
    Description  Microsoft Edge 95

    Operation    SetValueKey
    Key          \REGISTRY\USER\S-1-5-21-291532225-531189968-1237804090-12199\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\
    Value Name   MicrosoftEdgeAutoLaunch_35F8F3346C021A489FDBFF14FD72277C
    Value        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --no-startup-window --win-session-start /prefetch:5

    Process Trace
    1  C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe [14044]
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --no-startup-window /prefetch:5
    2  C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe [8100]
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --no-startup-window /prefetch:5
    3  C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe [13216]
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --no-startup-window /prefetch:5
    4  C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe [12884]
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --no-startup-window /prefetch:5
    5  C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe [13112]
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --profile-directory=Default
    6  C:\Windows\explorer.exe [2032]
    7  C:\Windows\System32\userinit.exe [4472]
    8  C:\Windows\System32\winlogon.exe [888]
    winlogon.exe
    9  C:\Windows\System32\smss.exe [732]
    \SystemRoot\System32\smss.exe 00000198 00000084
    10 C:\Windows\System32\smss.exe [572]
    \SystemRoot\System32\smss.exe

    Thumbprint
    5c33b6d562ede47fec2489d32a7682e0bfb68ecde904eb2dc1c2cf1c3c396714
    Data based thumbprint
    fdbd40f805606908af0450ce42e7a30eb990627335f12cf0a8de3aa69a25431e

Reply
  • Hello Qoosh,

    I found a entry regarding PID 911.

    Mitigation   Lockdown
    Timestamp    2021-11-09T15:10:13

    Platform     10.0.19043/x64 v523 06_9e-
    PID          14044
    Application  C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    Created      2021-05-22T11:10:56
    Modified     2021-11-04T08:54:54
    Description  Microsoft Edge 95

    Operation    SetValueKey
    Key          \REGISTRY\USER\S-1-5-21-291532225-531189968-1237804090-12199\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\
    Value Name   MicrosoftEdgeAutoLaunch_35F8F3346C021A489FDBFF14FD72277C
    Value        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --no-startup-window --win-session-start /prefetch:5

    Process Trace
    1  C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe [14044]
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --no-startup-window /prefetch:5
    2  C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe [8100]
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --no-startup-window /prefetch:5
    3  C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe [13216]
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --no-startup-window /prefetch:5
    4  C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe [12884]
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --no-startup-window /prefetch:5
    5  C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe [13112]
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --profile-directory=Default
    6  C:\Windows\explorer.exe [2032]
    7  C:\Windows\System32\userinit.exe [4472]
    8  C:\Windows\System32\winlogon.exe [888]
    winlogon.exe
    9  C:\Windows\System32\smss.exe [732]
    \SystemRoot\System32\smss.exe 00000198 00000084
    10 C:\Windows\System32\smss.exe [572]
    \SystemRoot\System32\smss.exe

    Thumbprint
    5c33b6d562ede47fec2489d32a7682e0bfb68ecde904eb2dc1c2cf1c3c396714
    Data based thumbprint
    fdbd40f805606908af0450ce42e7a30eb990627335f12cf0a8de3aa69a25431e

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