Remove Mostrar. Description and removal instructions

Title: Mostrar
Type: Dialers	Severity scale: (48 / 100)

Mostrar is a dialer that connects a compromised computer to the Interent by dialing a high-cost phone number using a modem. The parasite also changes the Internet Explorer default home page to undesirable web site. Mostrar can get into the system while visiting some insecure web resources. It runs on every Windows startup.

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Mostrar properties:
• Changes browser settings
• Connects itself to the internet
• Hides from the user
• Stays resident in background

Automatic Mostrar removal:

remover for Mostrar

Mostrar manual removal:

Delete registry values:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run\dialer
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\Start Page=[site address]
HKEY_CURRENT_USER\PTPSA32.PTPSAWeb
HKEY_CURRENT_USER\PTPSA32.PTPSAWeb.1
HKEY_CURRENT_USER\CLSID\{88C51E90-8E9C-4C96-8A45-574D88B63FAF}
HKEY_CURRENT_USER\Interface\{4FC63700-2093-4AD2-8D37-3B3D86D9C940}
HKEY_CURRENT_USER\Interface\{5BF0CE3E-61D2-4A7B-BAA3-0C4667A9563D}
HKEY_CURRENT_USER\TypeLib\{095C0DB4-FEA6-440E-8DFC-00FC53AC827D}

HELP:
how to remove registry entries

Delete files:
msapasrc.dll, msa64chk.dll

HELP:
how to remove harmful files

Misc:
The dialer uses some randomly named files.

Other programs to remove Mostrar:

• Malwarebytes Anti Malware - Review - Download
• Malwarebytes Anti Malware - Review - Download
• Windows Defender - Review - Download

Information added: 19/03/04
Information updated: 29/09/05

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