minimal-minimal

RDN/Ransom!eg

RDN/Ransom!eg

Threat Detail

  • Malware Type: Trojan
  • Malware Sub-type: Win32
  • Protection Added: 2014-05-08
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 e-mail, malicious or hacked Web pages, Internet Relay Chat (IRC), peer-to-peer networks, etc.

Aliases -

  • Nod32                 -             a variant of Win32/Kryptik.CBVM
  • Microsoft            -             Trojan:Win32/Crowti.A
  • IKarus                 -              Trojan.Crypt3
  • Kaspersky           -              Trojan-Ransom.Win32.Cryptodef.fc

Minimum Engine

5400.1158

File Length

Varies

Description Added

2014-05-08

Description Modified

2014-05-08

Malware Proliferation

fpo-ti-severity-legend logo-new-mcafee
RDN/Ransom!eg” " is the generic detection for the Trojan which belongs to Ransom Cryptolocker. Cryptolocker is a ransom-ware that on execution locks the user's system thereby leaving the system in an unusable state. It also encrypts the list of file types present in the user system. The compromised user has to pay the attacker with ransom to unlock the system and to get the files decrypted.

Trojan encrypts the files with following extension:

*. Odt, *. Ods, *. Odp, *. MDGs *. Odc, *. ODB, *. Doc, *. Docx, *. Docm, *. WPS *. xls, *. xlsx, *. xlsm, *. xlsb, *. XLK, *. ppt, *. pptx, *. pptm, *. mdb, *. accdb, *. pst, *. dwg, *. dxf, *. DXG, *. wpd, *. rtf, *. wb2, *. mdf, *. dbf, *. psd, *. PDD, *. pdf, *. eps, *. ai, *. indd, *. cdr *. jpg, *. jpe, *. jpg, *. dng, *. 3fr, *. ARW, *. SRF *. sr2, *. bay, *. crw, *. cr2, *. dcr, *. KDC, *. erf, *. mef, *. MRW, *. nef, *. nrw, *. orf, *. raf, *. raw, *. RWL, *. rw2, *. r3d, *. PTX, *. PEF, *. SRW, *. x3f, *. der, *. heaven *. crt, *. pem, *. pfx, *. p12, *. p7b, *. p7c

Upon execution the Trojan tries to connects to the below IP Address

  • Wa[Removed]na.com
  • qo[Removed]wea.com
  • kh[Removed]isi.com
  • 162. [Removed].163
Upon Execution, the Trojan drops file into the following location

  • %Appdata%\Sun\Java\jre1.6.0_25\DECRYPT_INSTRUCTION.HTML
  • %Appdata%\Sun\Java\jre1.6.0_25\DECRYPT_INSTRUCTION.TXT
  • %Appdata%\Sun\Java\jre1.6.0_25\DECRYPT_INSTRUCTION.URL
  • %Appdata%\Sun\Java\DECRYPT_INSTRUCTION.HTML
  • %Appdata%\Sun\Java\DECRYPT_INSTRUCTION.TXT
  • %Appdata%\Sun\Java\DECRYPT_INSTRUCTION.URL
  • %Appdata%\Sun\DECRYPT_INSTRUCTION.HTML
  • %Appdata%\Sun\DECRYPT_INSTRUCTION.TXT
  • %Appdata%\Sun\DECRYPT_INSTRUCTION.URL
  • %Appdata%\6e7db17.exe
  • %Appdata%\DECRYPT_INSTRUCTION.HTML
  • %Appdata%\DECRYPT_INSTRUCTION.TXT
  • %Appdata%\DECRYPT_INSTRUCTION.URL
  • %userprofile%Cookies\DECRYPT_INSTRUCTION.HTML
  • %userprofile%Cookies\DECRYPT_INSTRUCTION.TXT
  • %userprofile%Cookies\DECRYPT_INSTRUCTION.URL%Userprofile%\Start Menu\Programs\Startup\6e7db17.exe
Upon Execution, the Trojan drop folder into the following location

  • [System Drive]\6e7db17
The following registry keys have been added to the system.

  • HKEY_USERS\S-1-5-[Varies]\ Software\6E7DB172ECD29D41C2E652A4B4C8C5E8
  • HKEY_USERS\S-1-5-[Varies]\ Software\6E7DB172ECD29D41C2E652A4B4C8C5E8\CRYPTLIST
The following registry key values have been added to the system.

  • HKEY_USERS\S-1-5-[Varies]\Software\Microsoft\Windows\CurrentVersion\ Run\6e7db1: “[System Drive]:\6e7db17\6e7db17.exe "
  • HKEY_USERS\S-1-5-[Varies]\Software\Microsoft\Windows\CurrentVersion\ Run\6e7db1: “%AppData%\6e7db17.exe "
  • HKEY_USERS\S-1-5-[Varies]\Software\Microsoft\Windows\CurrentVersion\ RunOnce\ *e7db1: “[System Drive]:\6e7db17\6e7db17.exe "
  • HKEY_USERS\S-1-5-[Varies]\Software\Microsoft\Windows\CurrentVersion\ RunOnce\ *e7db1: “%AppData%\6e7db17.exe "
The above mentioned registry value ensures that the Trojan gets executed whenever the System starts.

  • HKEY_USERS \S-1-5-21-[Varies]\Software\6E7DB172ECD29D41C2E652A4B4C8C5E8\2: "?What happened to your files ?
All of your files were protected by a strong encryption with RSA-2048 using CryptoWall.
More information about the encryption keys using RSA-2048 can be found here: http://en.wikipedia.org/wiki/RSA_(cryptosystem)


What does this mean ?
This means that the structure and data within your files have been irrevocably changed, you will not be able to work with them, read them or see them,
it is the same thing as losing them forever, but with our help, you can restore them.


How did this happen ?
Especially for you, on our server was generated the secret key pair RSA-2048 - public and private.
All your files were encrypted with the public key, which has been transferred to your computer via the Internet.
Decrypting of your files is only possible with the help of the private key and decrypt program, which is on our secret server.


What do I do ?
Alas, if you do not take the necessary measures for the specified time then the conditions for obtaining the private key will be changed.
If you really value your data, then we suggest you do not waste valuable time searching for other solutions because they do not exist.


For more specific instructions, please visit your personal home page, there are a few different addresses pointing to your page below:
1.hxxps://kpai7ycr7jxqkilp.torexplorer.com/5jgf
2.hxxps://kpai7ycr7jxqkilp.tor2web.org/5jgf
3.hxxps://kpai7ycr7jxqkilp.onion.to/5jgf

If for some reasons the addresses are not available, follow these steps:
1.Download and install tor-browser: http://www.torproject.org/projects/torbrowser.html.en
2.After a successful installation, run the browser and wait for initialization.
3.Type in the address bar: kpai7ycr7jxqkilp.onion/5jgf
4.Follow the instructions on the site.


IMPORTANT INFORMATION:
Your personal page: https://kpai7ycr7jxqkilp.torexplorer.com/5jgf
Your personal page (using TOR): kpai7ycr7jxqkilp.onion/5jgf
Your personal identification number (if you open the site (or TOR 's) directly): 5jgf"

HKEY_USERS \S-1-5-21-[Varies]\Software\6E7DB172ECD29D41C2E652A4B4C8C5E8\3: "?[html]
[title]CryptoWall[/title]
[style]
a { color:green; }
.tb {  background:white; border-style:solid; border-width:1px; padding:3px; border-color:lime; }
.ttl { font-size:13px; color:880000; }
[/style]
[body style="width:100%; background:#58A0C7;"]
  [center]
  [div style="text-align:left; font-family:Arial; font-size:13px; line-height:20px; margin-top:10px; width:800px; background:#F4F4F4; padding:20px; border-style:solid; border-width:5px; border-color:#BABABA;"]
    [b][font class="ttl"]What happened to your files?[/b][/font]
    [br]
    [font style="font-size:13px;"]All of your files were protected by a strong encryption with RSA-2048 using CryptoWall.
    [br]
    More information about the encryption keys using RSA-2048 can be found here: [a href="http://en.wikipedia.org/wiki/RSA_(cryptosystem)" target="_blank"]http://en.wikipedia.org/wiki/RSA_(cryptosystem)[/a][br][/font]
    [br]
    [b][font class="ttl"]What does this mean?[/b][/font]
    [br]
    [font style="font-size:13px;"]
      This means that the structure and data within your files have been irrevocably changed, you will not be able to work[br] with them, read them or see them, it is the same thing as losing them forever, but with our help, you can restore them.
    [/font]
    [br][br]
    [b][font class="ttl"]How did this happen?[/b][/font]
    [br]
    [font style="font-size:13px;"]
      Especially for you, on our server was generated the secret key pair RSA-2048 - public and private.
      [br]
      All your files were encrypted with the public key, which has been transferred to your computer via the Internet.
      [br]
      Decrypting of your files is only possible with the help of the private key and decrypt program, which is on our secret server.
    [/font]
    [br][br]
    [b][font class="ttl"]What do I do?[/b][/font]
    [br]
    [font style="font-size:13px;"]
      Alas, if you do not take the necessary measures for the specified time then the conditions for obtaining the private key will be changed.
      [br]
      If you really value your data, then we suggest you do not waste valuable time searching for other solutions because they do not exist.
    [/font]
    [br][br]
    [div class="tb" style="color:#880000; font-size:13px; border-width:3px;"]
      For more specific instructions, please visit your personal home page, there are a few different addresses pointing to your page below:
      [hr]
      [b]1.[a href="https://kpai7ycr7jxqkilp.torexplorer.com/5jgf" target="_blank"]https://kpai7ycr7jxqkilp.torexplorer.com/5jgf[/a][/b]
      [br]
      [b]2.[a href="https://kpai7ycr7jxqkilp.tor2web.org/5jgf" target="_blank"]https://kpai7ycr7jxqkilp.tor2web.org/5jgf[/a][/b]
      [br]
      [b]3.[a href="https://kpai7ycr7jxqkilp.onion.to/5jgf" target="_blank"]https://kpai7ycr7jxqkilp.onion.to/5jgf[/a][/b]
    [/div]
    [br]
    [div class="tb" style="font-size:13px; border-color:#880000;"]
      If for some reasons the addresses are not available, follow these steps: [hr]
      1. Download and install tor-browser: [a href="http://www.torproject.org/projects/torbrowser.html.en" target="_blank"]http://www.torproject.org/projects/torbrowser.html.en[/a][br]
      2. After a successful installation, run the browser and wait for initialization.[br]
      3. Type in the address bar: kpai7ycr7jxqkilp.onion/5jgf[br]
      4. Follow the instructions on the site.
    [/div]
    [br]
    [br]
    [b]IMPORTANT INFORMATION:[/b][br]
    [div class="tb" style="width:790px;"]
      [font style="color:#770000;"]Your Personal PAGE: [b][a href="https://kpai7ycr7jxqkilp.torexplorer.com/5jgf" target="_blank"]https://kpai7ycr7jxqkilp.torexplorer.com/5jgf[/a][/b][/font][br]
      Your Personal PAGE(using TOR): [font style="font-weight:bold; color:#009977;"]kpai7ycr7jxqkilp.onion/5jgf[/font][br]
      Your personal code (if you open the site (or TOR 's) directly): [font style="font-weight:bold; color:#770000;"]5jgf[/font][br]
    [/div]
  [/div]
  [/center]
[/body]
[/html]"
HKEY_USERS \S-1-5-21-[Varies]\Software\6E7DB172ECD29D41C2E652A4B4C8C5E8\4: "?[DEFAULT]BASEURL=https://kpai7ycr7jxqkilp.torexplorer.com/5jgf
               [InternetShortcut]URL=hxxps://kpai7ycr7jxqkilp.torexplorer.com/5jgf

The above registry key ensures it drops the image, html or text file to alert the user that the files are encrypted and request them to decrypt the file by paying.
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).
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 spam, etc.
Presence of above mentioned activities