Endpoint Protection Cloud

 View Only
  • 1.  SEP SBE Cloud - 2 separate virus alerts

    Posted Nov 13, 2018 09:37 AM

    Hey

    I've gotten 2 similar virus alerts recently and it is unclear from where they originate. It's a small business with 1 LAN, 10 users and 15 PCs running Win7Pro 32bit. 

    One alert says: 
    Source: External Media

    ...and there is no guidance on how to interprete that, eg if its USBs & CDs or just a generic term for something.

     

    The other alert is not logged in the client logs, which is odd. I just have the alert email and cloud log.
    It is not unheard of that hapless endusers try to remove evidence of errors in order to escape the wrath of some management, though.
    -> Deliberate malicious removal of log entries is not a top suspect. 

    Nevertheless, 2 alerts with similar patterns with no clear indication of their origin is... "interesting".

    So, what does 
    Source: External Media
    actually indicate in this context

    ...and any pointers or information on what kind of relevant activity happens in files like

    Infected file: c:\Windows\System32\ 00026202.tmp Removed
    Infected file: c:\Windows\System32\ 00009493.tmp Removed

    Infected file: c:\Windows\System32\ 00012746.tmp Removed

    Infected file: c:\Windows\System32\ 00012652.tmp Removed

    Infected file: c:\Windows\System32\ 00032759.tmp Removed

    Infected file: c:\Windows\System32\ 00012277.tmp Removed

    ...is appreciated. 

    cheers

    Erik

     

     

    1. 

    ----------------------------------

     

    Filename: 00026202.tmp

    Threat name: DownloaderFull Path: c:\Windows\System32\00026202.tmp

     

    ____________________________

     

    ____________________________

     

     

    On computers as of 

    2018-10-31 at 12:10:40

     

    Last Used 

    2018-10-31 at 12:13:22

     

    Startup Item 

    No

     

    Launched 

    No

     

    Threat type: Virus. Programs that infect other programs, files, or areas of a computer by inserting themselves or attaching themselves to that medium.

     

     

    ____________________________

     

     

    00026202.tmp Threat name: Downloader

    Locate

     

     

    Very Few Users

    Fewer than 5 users in the Symantec Community have used this file.

     

    Very New

    This file was released less than 1 week  ago.

     

    High

    This file risk is high.

     

     

    ____________________________

     

     

    Source: External Media

     

    Source File:

    00026202.tmp

     

    ____________________________

     

    File Actions

     

    Infected file: c:\Windows\System32\ 00026202.tmp Removed

    Infected file: c:\Windows\System32\ 00009493.tmp Removed

    Infected file: c:\Windows\System32\ 00012746.tmp Removed

    Infected file: c:\Windows\System32\ 00012652.tmp Removed

    Infected file: c:\Windows\System32\ 00032759.tmp Removed

    Infected file: c:\Windows\System32\ 00012277.tmp Removed

     

     

     

    2. 

     

    -------------------------------------------------

     

     

    A high-risk incident was detected .[... edited ...]

    Incident Details

    00032053.tmp (Trojan.Dropper) detected by Virus scanner

    Threat Name

    Trojan.Dropper

    Threat Type

    Virus

    File Name

    c:\windows\system32\00032053.tmp

    Action Required

    To resolve this security risk a reboot is required

     

     

     



  • 2.  RE: SEP SBE Cloud - 2 separate virus alerts

    Posted Nov 14, 2018 04:14 AM
    Hi Erik, Generally external media means something like a USB stick or removable external HDD, not CD/DVD. Those files are *.tmp files, and temporary by nature. They are generically created by applications and should be cleaned up. Sometimes, they aren't. Those files are being infected by whatever infected external media was inserted into a PC and then SPE SBE did its job and cleaned the files by removing them. What I would do if I was you is narrow this down and find the PC that this was generated from, and go speak to the user. Let them know whatever they have put into the PC has a virus on. And possibly look at an application to prevent this. Thanks!


  • 3.  RE: SEP SBE Cloud - 2 separate virus alerts

    Posted Nov 14, 2018 08:44 AM

    Hey, thanks for answering.

    The user in question say they were at lunch at the time, which makes this .. "interesting". 

    That is why the accuracy of the Symantec heading: "external media" is of some relevance.

    BYOD & external USB device blocking is not really an option. Logging and profiling external/ temporary devices on LAN and clients would be interesting though.

    cheers

     



  • 4.  RE: SEP SBE Cloud - 2 separate virus alerts

    Posted Nov 16, 2018 08:15 AM

    this thread is ongoing and a solution is not yet at hand.. watch this space...



  • 5.  RE: SEP SBE Cloud - 2 separate virus alerts

    Posted Nov 29, 2018 03:48 PM

    Hi,

    Can you open a support ticket for this, that way we can monitor it better?