Variante de ransomware BITMAN (mezcla de CTBLOCKER, CRYPTOWALL, CRYPTOLOCKER, TESLACRYPT…) controlado a partir de ELISTARA 32.86 de hoy

Otra variante de ransomware, esta vez mezcla de varios de los ya conocidos ya que utiliza el nombre de MSCONFIG.EXE para guardar el fichero malicioso y lanzarlo en el siguiente reinicio en una clave O4 RUN, como el CTBLOCKER, añade tres letras al nombre de los ficheros cifrados, como el TESLACRYPT, presenta una pantalla de informacion para descifrado muy similar a la del CRYPTOWALL

Pasamos a controlarlo especificamente a partir de ELISTARA 32.86, si bien anteriores versiones ya eliminan la carga en los posteriores reinicios, al eliminar la clave O4 RUN … MSCONFIG.EXE por su similitud con el CTBLOCKER, pero añadimos su deteccion por cadenas desde el ELISTARA 32.86 de hoy

La pantalla de información del propio malware indica lo siguiente:

What happened to your files ?
All of your files were protected by a strong encryption with RSA-2048.
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. http://aep554w4fm8j.fflroe598qu.com/5EE4842387BFE54A
2. http://aoei243548ld.keedo93i1lo.com/5EE4842387BFE54A
3. https://zpr5huq4bgmutfnf.onion.to/5EE4842387BFE54A

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: zpr5huq4bgmutfnf.onion/5EE4842387BFE54A
4. Follow the instructions on the site.

IMPORTANT INFORMATION:
Your personal page: http://aep554w4fm8j.fflroe598qu.com/5EE4842387BFE54A
Your personal page (using TOR): zpr5huq4bgmutfnf.onion/5EE4842387BFE54A
Your personal identification number (if you open the site (or TOR ‘s) directly): 5EE4842387BFE54A

Y el preanalisis de virustotal ofrece el siguiente informe:

MD5 d2db87e5b0f4edf9b6d88e9ee61b0fff
SHA1 2d44c57f34f7c03ac1817819200744b95007addc
File size 257.5 KB ( 263654 bytes )
SHA256: a3eee91bc759ccb521b5658d35a8e413965a76bb369c3cc0cd18e3eaed39953f
File name: vcweke.exe
Detection ratio: 46 / 57
Analysis date: 2015-09-02 07:40:06 UTC ( 11 minutes ago )

0 1

Antivirus Result Update
ALYac Trojan.GenericKD.2644411 20150902
AVG Crypt4.BWCK 20150902
AVware Trojan.Win32.Generic!BT 20150901
Ad-Aware Trojan.GenericKD.2644411 20150902
Agnitum Trojan.Bitman! 20150901
AhnLab-V3 Trojan/Win32.CryptoWall 20150902
Antiy-AVL Trojan[Ransom]/Win32.Bitman 20150902
Arcabit Trojan.Generic.D2859BB 20150902
Avast Win32:Malware-gen 20150902
Avira TR/Crypt.ZPACK.152774 20150902
BitDefender Trojan.GenericKD.2644411 20150902
Bkav HW32.Packed.42DB 20150901
CAT-QuickHeal Trojan.Bagsu.r4 20150901
Comodo UnclassifiedMalware 20150902
Cyren W32/Trojan.LCYX-0212 20150902
DrWeb Trojan.DownLoader15.44548 20150902
ESET-NOD32 a variant of Win32/Kryptik.DTLD 20150902
Emsisoft Trojan.GenericKD.2644411 (B) 20150902
F-Secure Trojan.GenericKD.2644411 20150902
Fortinet W32/Bitman.DTLD!tr 20150902
GData Trojan.GenericKD.2644411 20150902
Ikarus Trojan.Win32.Crypt 20150902
Jiangmin Trojan/Bitman.hz 20150901
K7AntiVirus Trojan ( 004cd1521 ) 20150902
K7GW Trojan ( 004cd1521 ) 20150902
Kaspersky Trojan-Ransom.Win32.Bitman.vu 20150902
Malwarebytes Trojan.Agent.rgk 20150902
McAfee RDN/Ransom 20150902
McAfee-GW-Edition RDN/Ransom 20150902
MicroWorld-eScan Trojan.GenericKD.2644411 20150902
Microsoft Trojan:Win32/Bagsu!rfn 20150902
NANO-Antivirus Trojan.Win32.Bitman.dvfagf 20150902
Panda Trj/Genetic.gen 20150901
Qihoo-360 HEUR/QVM07.1.Malware.Gen 20150902
Rising PE:Trojan.Win32.Generic.18F76E0B!418868747[F1] 20150901
SUPERAntiSpyware Trojan.Agent/Gen-Dropper 20150829
Sophos Troj/Ransom-BDO 20150901
Symantec Trojan.Cryptolocker.N 20150901
Tencent Win32.Trojan.Bp-ransomware.Ejqz 20150902
TheHacker Trojan/Kryptik.dtld 20150831
TrendMicro TROJ_CRYPTESLA.CP 20150902
TrendMicro-HouseCall TROJ_CRYPTESLA.CP 20150902
VBA32 Hoax.Bitman 20150901
VIPRE Trojan.Win32.Generic!BT 20150901
ViRobot Trojan.Win32.S.Agent.263654[h] 20150902
nProtect Trojan/W32.Bitman.263654 20150901
Dicha version del ELISTARA 32.86 que lo detecta y elimina, estará disponible en nuestra web a partir de las 19 h CEST de hoy

Si se ha detectado dicho engendro, antes de volver a conectar el ordenador que causó la codificación al ejecutar el fichero malicioso, recomendamos ARRANCAR EN MODO SEGURO y lanzar el ELISTARA 32.86 o superior, aceptando, cuando lo pregunte, ELIMINAR LOS TEMPORALES.

Y recordamos las recomendaciones sobre los ransomware en general:

torio/

saludos

ms, 2-9-2015