Eset desarrolló un análisis sobre el nuevo ataque de ransomware que se inició en Ucrania, y cifró información de máquinas de todo el mundo, afectando compañías de distintas industrias como bancos, red eléctrica y empresas postales, entre otras. El ransomware (secuestro de información) es el término genérico para referirse a todo tipo de software malicioso que le exige al usuario del equipo el pago de un rescate.
“El día martes un nuevo ataque de ransomware dejó en evidencia que sigue habiendo sistemas desactualizados, falta de soluciones de seguridad y de planes necesarios para evitar una infección. Los ataques continúan creciendo y evolucionando, por lo que desde Eset seguimos apostando a que la prevención y la concientización son claves para evitar ser víctimas.”, aseguró Camilo Gutierrez, jefe del Laboratorio de Eset Latinoamérica
Con el fin de despejar todas las dudas en torno a este nuevo ataque global, la compañía comparte el siguiente cuestionario:
¿Cuáles son las características de este ransomware?
Se destacan tres aspectos que lo diferencian:
Cifrado: no solo cifra los archivos con una extensión determinada, sino que además intenta cifrar, generalmente con éxito, el MBR (Master Boot Record), que es el registro principal de arranque.
Propagación: tiene la propiedad de un gusano, o sea, puede propagarse a través de diferentes técnicas por la red logrando infectar nuevos equipos.
Exploit: hace uso de ellos para explotar vulnerabilidades en equipos que no han sido actualizados o no se les han instalado los parches correspondientes.
¿Es igual de poderoso que WannaCryptor?
Ambos tienen el mismo impacto: impiden el acceso a la información almacenada en el sistema. Sin embargo, este nuevo ataque no solo cifra la información que se encuentra en los equipos, sino que, luego de que se reinicia el sistema, deja inutilizable al sistema operativo, por lo que las víctimas se ven obligadas a realizar una reinstalación.
¿Qué es lo que hace exactamente esta amenaza?
Luego de que el ransomware es ejecutado, crea una tarea programada con el fin de reiniciar el equipo en un determinado tiempo, que no suele ser más de sesenta minutos. Además, verifica si existen carpetas o discos compartidos para propagarse.
A continuación, comienza a cifrar archivos que contengan una determinada extensión. A diferencia de la mayoría del ransomware, este código malicioso no cambia o agrega una extensión particular luego de cifrar cada archivo, una técnica muy utilizada por los atacantes para distinguir a los archivos infectados.
Por último, el malware intentará eliminar los registros de eventos para no dejar rastro alguno, como también ocultar sus acciones.
¿Cómo se propaga de un país a otro? ¿Llegó a Latinoamérica?
La propagación es una característica destacable de esta amenaza. Una vez que logra infectar un equipo, intenta extraer las credenciales del usuario para luego usarlas con PsExec y WMIC para realizar una búsqueda de carpetas y discos compartidos, y así propagarse por la red a la cual el equipo esté conectado. De esta manera, logra infectar equipos situados en distintos países y regiones.
Sí, llegó a Latinoamérica, en la mayoría de los casos a equipos de empresas multinacionales conectados en red con los de otras filiales en Europa o Asia, desde las cuales se propagó con su capacidad de gusano.
¿Qué se puede hacer para evitarlo?
Tanto en hogares como en empresas, contar con una solución antivirus es imprescindible. La misma tiene que estar correctamente configurada, contemplar qué puertos están abiertos y por qué.
Además, la red debe estar configurada y segmentada correctamente, y monitorear constantemente el tráfico para detectar algún tipo de comportamiento fuera de lo normal. Es esencial realizar un estudio detallado de la información más relevante y hacer backup de la misma, para que, en caso de que se cifre, haya una forma de restaurarla.
En cuanto a las contraseñas, es primordial llevar una buena gestión de las mismas, ya que si tan solo una de las máquinas infectadas posee las credenciales de administrador, podría infectar toda la red.
Si estoy infectado y no puedo acceder al sistema, ¿cómo tendría que avanzar?
Se podrían utilizar técnicas forenses para intentar correr en memoria otro sistema operativo y de esta forma acceder a los archivos cifrados. Sin embargo, no hay mucho que se pueda hacer más que aplicar el backup, lo cual sería crucial para evitar la reinstalación del sistema operativo.
En última instancia, si no hay backup, los cibercriminales siempre ofrecerán la opción extorsiva, pero desde ESET no sugerimos de pagar el rescate ya que mientras siga siendo rentable, el ransomware continuará creciendo.
¿Cómo están operando los atacantes? ¿Esperan un pago a cambio?
El proceso para recuperar la información es el mismo al que nos tiene acostumbrado este tipo de ataques. Una vez finalizada la infección, el ransomware emite las instrucciones, en donde los atacantes solicitan un pago en bitcoins, en este caso, equivalente a 300 dólares.
Pie de imagen: Aviso de que el equipo ha sido infectado.
¿Por qué se ha vuelto tan común el secuestro de datos?
Dentro de los puntos destacables se encuentran la falta de concientización y educación a nivel seguridad que tienen muchos usuarios y empresas. Una gran parte todavía no conoce el impacto que puede tener en un modelo de negocio un ciberataque hasta que es víctima y se ve obligada a pagar para recuperar su información.
Ante esta cuestión, a pesar de la velocidad con que circulan las noticias sobre ataques informáticos y los problemas que generan, los cibercriminales encuentran una motivación importante para continuar desarrollando nuevas amenazas.
¿El ataque está armado por una persona o un grupo? ¿Se necesitan conocimientos técnicos altos?
Resulta difícil pensar que una sola persona puede estar detrás de este ataque, ya que es una amenaza que incorpora varias técnicas en cuanto a exploits, propagación, y cifrado, así como para evadir medidas de seguridad. Sin embargo, no podemos asegurar cuántas son las personas involucradas en el desarrollo de un ataque de tal magnitud.
¿Se puede dar con los autores del ataque?
No por ahora. A diferencia de una botnet, por ejemplo, no hay un Centro de Comando y Control al que se conecte la amenaza como para rastrearlo y dar con los autores; y de usarlo, seguramente sería un servidor ajeno al cual atacaron para tomar el control y accederían desde TOR, logrando anonimidad. Por otro lado, el pago del rescate se hace en bitcoins y, por las características de esta criptomoneda, se hace prácticamente imposible rastrear su destino final.
Para más información ingrese al portal de noticias de ESET llamado WeLiveSecurity en: https://www.welivesecurity.com/la-es/2017/06/29/todo-sobre-nuevo-ataque-de-ransomware/
Escuela de Internet es la única escuela en Latinoamérica en que los alumnos aprenden marketing digital manejando presupuesto real que Google dispone de modo pro-bono para ONG.
Con los elementos de productividad aumentada, los datos de activos inteligentes y los robots, los minoristas están adoptando soluciones tecnológicas para mejorar dicha experiencia de compra.
La tecnología, junto con una planificación estratégica de la fuerza laboral y la inversión en optimización de flujos de trabajo, ofrece la oportunidad de cerrar la brecha entre las grandes y pequeñas empresas en cuanto a las expectativas de cumplimiento de pedidos. La adaptación de las organizaciones a estos desafíos mediante el uso de soluciones tecnológicas será clave para lograr el pedido perfecto y asegurar la satisfacción del cliente a largo plazo.
Elder Ren glanced at the bronze corpse and the mid grade magic weapon Gatling in the bronze corpse s hand, and said lightly.The first step is the vomiting lotus flower technique and Buddhist relics.
Originally, monks at the same time needed to take care of each other, but this group of newcomers was a little special.This is the greatest merit and what the old monk values most in his journey.
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The formation of Seven Star Island is shining brightly.Has your body refining improved again Elder Su glanced at Li Shiming with his mind and asked with slight hesitation.
I am a junior Ling Zhifu. Li Shiming also thought about where Changming Island is.Tianhai Hall is the main hall of Zhongfeng. It is on the mountainside of Zhongfeng and is also the core of Tianhai Sect.
In addition, there is a long term sect task, which is to maintain the sect s formation, and the rewards are also good deeds.The muscles of the Taoist body have also changed. Due to the practice of the Vajra Body Protection Divine Art and the Sword Demon Secret Book , his muscles are as hard as iron, but Mama June Shocks Fans with 65-Pound Weight Loss, Revealing How Determination and Family Support Changed Her Life now they are relaxed and there is no trace of the body refining techniques
The bones of the Taoist body have completely turned into jade color.
The Yun clan members were still in the sect, and he also knew that the Yun clan had two Blue Raspberry Gummies: Benefits and Reviews foundation building monks, and there were countless other closely related foundation building monks.The flying boat took him there and quickly reached the destination.
There is an essential difference between the two. Master is really extraordinary Li Shiming responded hurriedly after hearing what he said.The new batch of newcomers whose spiritual roots were inferior started to advance to the first level of Qi Refining a month later, and the gap began to appear at this time.
One is to transfer the consciousness into the clone body for complete control, and the main body will lose control of consciousness.He was either a desperado or someone who was absolutely sure.
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This is the back garden, belonging to a private residence.The monk s promise was very prudent, and Li Shiming s acceptance represented a responsibility.
You must know that the sect has allocated a public defensive array to Yingzui Island.You must know that this is the conclusion reached by Li Shiming through micron level observations.
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Those five nodes had the aura he was familiar with, and they were the five elements of energy How Mike Pompeo Lost 90 Pounds: His 2025 Weight Loss Secrets contained in the second grade Tieli spirit wood, green crystal, firework crystal, earth stone, and wood based iron.Talisman is more convenient than casting spells by himself, but the talismans in his hand are too few.
And his self imposed Light Body Technique allowed the speed to reach 120 kilometers per hour.It was only then that he felt the difference between the array masters.
and even lost a magic weapon. Although Elder Baili did not know that Baili Jinyan was killed by him, nor did he know that his injury and loss of the magic weapon were also caused by him, but with Elder Baili s temperament, he would definitely take revenge.Coupled with Li Shiming s overly young face, his trust in Li Shiming increased a little.
At least the spiritual weapons in the hands of foundation building casual cultivators are very few.What are you going to do I won t say anything Guan Laosan looked at Li Shiming in horror and shouted.
The monks who enter the Demon Sect will usually choose Demonic Skills at the beginning.
What do you mean, were they defeated by the guards of Shenmu Castle The angry dragon asked with a puzzled look on his face.Is that so Anluosi nodded clearly. When it comes to the existence of gods, no matter what happens, it is normal.
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Next to Archimonde, a figure wearing a yellow sand robe and holding a scepter made of yellow sand suddenly appeared.After all, not only do you lose Regen CBD Gummies Penis Enlargement: Product Review and Insights level experience, but you also lose skill proficiency.
In fact, there is still an army in this chaotic battlefield.Of course, we are not talking about pure blood elves here.
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The situation of True Lord Hongguang is in danger and he may lose at any time.Today s Master Heyi has long been numb to Qingyang s killing spree.
Others discovered the situation and quickly gathered in the direction of the accident.In addition, his true energy was not pure enough, and his foundation always felt a little frivolous, which would definitely Benefits of Semaglutide for Weight Loss affect the performance of his strength.
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I don t know what happened. It can make his four followers escape one after another.It is said that the total number of disciples of all the sects is only a few thousand.
There are benefits to being serious. Three days later, Qingyang completely adjusted his condition, then took out his Ziyun Tongxiao Cauldron, followed the requirements of the three color Tianbu Dan, placed the alchemy furnace in a certain direction and principle, and then took out the Exorcist Pill.
Most people will be at the bottom. Hongguang Zhenjun is also considered a figure in Crouching Tiger City, but compared with the Yuanying monks in the entire Demon Spirit Realm, he is far behind.These three conditions of yours have no appeal to me.
They gathered together again and fell into the alchemy furnace below.One of them was a passer by, and Qingyang had no intention of seeing him again.
Different from others, he is probably his eldest disciple.The magic weapon of Lord Hongguang is a colorful spindle shaped treasure called the fatal rainbow shuttle.
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Among the friends of Zhenjun Yao Yue, Zhenjun Shifu is the only one who can pose a threat to him.It seems that the Lingming Heshou Pill is indeed very attractive to the monks.
If Qingyang was just a foundation building cultivator, even a golden elixir cultivator, she could still hope that there would be a chance to renew their relationship.He was just afraid that the dragon would appear inside and did Wie viele Kalorien am Tag zum Abnehmen? Ein detaillierter Leitfaden not dare to step into the dragon cave.
No matter how secretive the blood clothed man of the Yang family is, it is impossible for True Lord Qingyan, the lord of a city, to not know anything about it.The Ghost King with Long Eyebrows has a transcendent and respected status.
Even a great sect wouldn t necessarily have so many spirit stones.Boom Ye Fei s body roared, like a tide, with surging energy.
Then It s a bad feeling to have your destiny controlled by others at any time.I just
You are talking nonsense. It is clear that you have good intentions.
Red. What is this Ye Fei couldn t help but was startled.He would kill Ye Fei first to prevent him from becoming a demon in the next day.
He did not dare to offend him, but he never expected that he would accept Ye Fei as his disciple.That s what I meant, come on. Looking at the fifth prince, Ye Fei took a deep breath and said calmly.
He rushed over and touched several of Murong Xue s acupuncture points, then checked her physical condition.Lao Wang looked solemn, analyzing the general trend of the world.
Ye Fei said seriously. Since they didn t mention anything about Lu Xie, they might not have seen him, so Ye Fei didn t say anything.However, that thing never made a move. Therefore, I did not take action against her because I was worried about causing you Disgusted.
However, in the face of the crowd s encirclement and killing, Ye Fei was not afraid at all.Ye Fei comforted the female disciple, and at the same time, holding the Liayan sword, he looked around vigilantly to prevent the underground demon from appearing.
It can be compared with a strong person who can be called Huazang Realm.After all, the red dragon is a red dragon, extremely powerful, and there is a wild aura erupting.
With this fourth grade alchemist, to be honest, Ye Fei felt more confident, although this fourth grade alchemist was a bit watery.If I give you a chance to go back to the academy, I m afraid you won t have the shame to come back.
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Eset desarrolló un análisis sobre el nuevo ataque de ransomware que se inició en Ucrania, y cifró información de máquinas de todo el mundo, afectando compañías de distintas industrias como bancos, red eléctrica y empresas postales, entre otras. El ransomware (secuestro de información) es el término genérico para referirse a todo tipo de software malicioso que le exige al usuario del equipo el pago de un rescate.