Post by
NIGHTfall_240sx »
https://forums.nicoclub.com/nightfall-240sx-u6331.html
Wed Apr 14, 2004 5:04 am
THE FIX IS HERE
Info on the Virus/Worm
Name: Win32.Netsky.D@mm Aliases: W32/Netsky.d@MM Type: Mass Mailer Size: 17424 bytes (packed) Detected: 1. March 2004 In the wild: Yes
SymptomsPresence of the following file in Windows directory (%WINDIR%) winlogon.exe
Presence of the following entry in HKLM\\Software\\Microsoft\\Windows\\CurrentVersion\\Run registry key: ICQ Net = winlogon.exe -stealth
Technical descriptionThis variant of the NetSky worm (.D) spreads only via e-mail (in contrast with previous versions, which spread through some P2P applications as well), sending itself to e-mail addresses found in the infected computer.
The worm arrives in the following e-mail format:
Subject - randomly chosen from the following strings: Re: Re: Document Re: Re: Thanks! Re: Thanks! Re: Your document Re: Here is the document Re: Your picture Re: Re: Message Re: Hi Re: Hello Re: Re: Re: Your document Re: Here Re: Your music Re: Your software Re: Approved Re: Details Re: Excel file Re: Word file Re: My details Re: Your details Re: Your bill Re: Your text Re: Your archive Re: Your letter Re: Your product Re: Your website
Body - randomly chosen from the following strings: Your document is attached. Here is the file. See the attached file for details. Please have a look at the attached file. Please read the attached file. Your file is attached.
Attached filename (and extension) - randomly chosen from the following strings: your_document.pif your_document.pif document.pif message_part2.pif your_document.pif document_full.pif your_picture.pif message_details.pif your_file.pif your_picture.pif document_4351.pif yours.pif mp3music.pif application.pif all_document.pif my_details.pif document_excel.pif document_word.pif my_details.pif your_details.pif your_bill.pif your_text.pif your_archive.pif your_letter.pif your_product.pif your_website.pif
When the user double-clicks the e-mail attachment, the worm does the following:
- copies itself to Windows directory (%WINDIR%) as winlogon.exe;
- adds the following entry to HKLM\\Software\\Microsoft\\Windows\\CurrentVersion\\Run registry key: ICQ net = winlogon.exe -stealth, (so it will be executed each time Windows starts up);
- disables some antivirus software and other known worms (such as Win32.Mydoom.A@mm and Win32.Mydoom.B@mm) by deleting relevant registry keys;
- scans the infected computers for e-mail addresses in files whose extension is one of the following: .eml .txt .php .pl .htm .html .vbs .rtf .uin .asp .wab .doc .adb .tbb .dbx .sht .oft .msg .shtm .cgi .dhtm
- creates and sends e-mails to these addresses with the above described format:
- On 01 mar. 2004, between 6:00 and 9:00 am (local time, not GMT) the worm generates in the computers speaker sounds with random tones and durations.
This variant (.D) uses an improved routine for sending itself through e-mail, allowing it to be sent several times faster than previous variants (.A - .C).
The worm avoids sending itself to addresses containing at least one of the following strings: icrosoft antivi ymantec spam avp f-secur itdefender orman cafee aspersky f-pro orton fbi abuse messagelabs skynet