Summary
A program that connects the computer to the Internet via a telephone line and modem. Malicious dialers will secretly connect the computer to premium-rate lines.
Removal
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Technical Details
The detection name Dialer:W32/Carpediemidentifies various premium-rate content dialers associated with the Carpediem.fr domain.
These programs provide users with an Internet connection by dialing an expensive pay-per-minute phone number with the computer's modem, while offering access to pornographic content.
Installation
When first executed, the dialer will create copies of itself in the following locations:
- %windir%\Temp\MT\[filename].exe
- %programfiles%\Montorgueil\[filename]\[filename].exe
A start menu folder with the name HOT Dialer containing shortcuts to the file will be created, as well as a desktop shortcut.
It then presents the user with an End User License Agreement (EULA) and various message boxes, which the user must click through to approve usage of the premium number. The user is given multiple opportunities to decline usage.
Registry Modifications
Sets these values:
- HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\4\MUICache\& C:\WINDOWS\Temp\MT\sample.exe = H o t C o n n e c t o r
- HKCU\Software\Microsoft\SystemCertificates\TrustedPublisher\Certificates\2DCB4C0C78BBE64B52C0312BAB2E95EA2971C353& Blob =
- HKCU\Software\Montorgueil\Kit0& Modem =
- HKCU\Software\Montorgueil\Kit0& CanLaunch = N
- HKCU\Software\Montorgueil\Kit0& Device =
- HKCU\Software\Montorgueil\Kit0& Num = 0
- HKCU\Software\Montorgueil\Kit0& Prefixe =
- HKCU\Software\Montorgueil\Kit0& Silent = N
- HKCU\Software\Montorgueil\Kit0& Standard = N
- HKCU\Software\Montorgueil\Kit0/17165\1& Fournisseur = 0
- HKCU\Software\Montorgueil\Kit0/17165\1& Ver = 1406368
- HKCU\Software\Montorgueil\Kit0/17165\1& Produit = 429
- HKCU\Software\Montorgueil\Kit0/17165\1& Tracking = 0
- HKCU\Software\Montorgueil\Kit0\UserId& ID = 0025718
- HKCU\Software\Montorgueil\Kit0\UserId& Pays = 1
- HKCU\Software\Montorgueil\Kit0\UserId& Langue = 9
Creates these keys:
- HKCU\Software\Microsoft\SystemCertificates\TrustedPublisher\Certificates\2DCB4C0C78BBE64B52C0312BAB2E95EA2971C353
- HKCU\Software\Montorgueil
- HKCU\Software\Montorgueil\Kit0
- HKCU\Software\Montorgueil\Kit0\17165
- HKCU\Software\Montorgueil\Kit0/17165
- HKCU\Software\Montorgueil\Kit0/17165\1
- HKCU\Software\Montorgueil\Kit0\UserId
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