Promail trojan

From: Patrick Oonk (patrickat_private)
Date: Fri Mar 19 1999 - 13:40:30 PST

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    http://cool.icestorm.net/aeon/news.html
    
    News and security advisories from Aeon Labs.
    
    [03.99]
    
    ProMail v1.21, an advanced freeware mail program for Windows 95/98, is a
    trojan.
    It has been spread through several worldwide distribution networks
    (SimTel.net, Shareware.com and others) as proml121.zip.
    
    Upon discovering - through LAN sniffing - that the program would attempt
    to connect to SMTP instead of POP3 when a regular mail check was
    performed, we reverse-engineered the software.
    
    The executable, which appears to have been created with Borland Delphi,
    has been packed with Petite (a shareware Win32-EXE compressor) and then
    "hexed" to make disassembly harder.
    
    ProMail v1.21 supports multiple mailboxes; every time a new mailbox is
    created, an "ini" file containing the users full name, passwords, email
    addresses, servers and more is generated.
    
    Prior to doing any other action, the program performs a check for a
    valid network connection which, if found, allows for the sending of ALL
    of the personal user data, including the user's password in encrypted
    format, to an account on NetAddress - a free email provider.
    
    Apart from this "feature", the software is 100 % functional and very
    well done.
    
    For further information or a more detailed analysis contact us.
    
    --
    : Patrick Oonk -    http://patrick.mypage.org/  - patrickat_private :
    : Pine Internet B.V.           Consultancy, installatie en beheer :
    : Tel: +31-70-3111010 - Fax: +31-70-3111011 - http://www.pine.nl/ :
    : -- Pine Security Digest - http://security.pine.nl/ (Dutch) ---- :
    : "unix is voor types zonder sociaal leven..." - Patrick van Eijk :
    



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