DM.Setup

Classification

Category:

Malware

Type:

Trojan

Platform:

W32

Aliases:

DM.Setup, DMSetup, DM_Setup, IRC, Goaway

Summary

This is an IRC trojan, affecting only people who use the mIRC application to chat.

Removal

Automatic action

Based on the settings of your F-Secure security program, it will either automatically delete, quarantine or rename the detected program or file, or ask you for a desired action.

Suspect a file is incorrectly detected (a False Positive)?

A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:

  • Check for the latest database updates

    First check if your F-Secure security program is using the latest detection database updates, then try scanning the file again.

  • Submit a sample

    After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.

    NOTE If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.

  • Exclude a file from further scanning

    If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.

    Note You need administrative rights to change the settings.

For more Support

Community

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User Guide

See the user guide for your product on the Help Center.

Contact Support

Chat with or call an expert for help.

Submit a sample

Submit a file or URL for further analysis.

Technical Details

Simple rules to avoid problems like this:

- Do NOT use AutoGet. Type /sreq ASK
 - Do NOT accept files from people/sites you do not know and trust
 - Never run an exe, or load a mIRC script, without knowing what it does

On execution of dmsetup.exe, the program will do the following:

1. COPY itself to four different directories on your hard drive
 2. ADD "dmsetup" to the end of your AUTOEXEC.BAT (possibly past the
    EOF). This will run dmsetup.exe whenever you start your computer
 3. CREATE c:\configg.sys (5 bytes), containing just one line, "ni!".
 4. Make a BACKUP of the original mirc.ini as backup0412.ini (or
    backup04.ini).
 5. create a NEW mirc.ini, which will load mircrem.ini
 The new mirc.ini installed by dmsetup.exe will:
  - overwrite your old settings, remove notify & channel lists, etc
  - window fonts will be back to default Fixedsys
  - your sign-on nick will be "a", userID and full name field "s".
  - the dccserver will be enabled for chat, send, and fserve,
  - this will allow outsiders to access your hard drive
  - fserve warning will be disabled, root dir will be c:\mirc\
  - cause you to send the dmsetup.exe file to other people
  - cause you to quit IRC if sent a /msg with the word "goawaysilly"
  - quit message will be "'tis to I who seem so sad"

All replaced INI files should be restored from backups or the whole chat client should be reinstalled.