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/
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In addition, he had a better understanding of Zhenjun Fengluan s methods, so he had no reservations in this battle, and he fought with ease
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The battle was finally over. Qingyang was extremely powerful, so it was naturally impossible for him to get into trouble at this level.After a long time, his eyes lit up and he said Could it be that you have already Did you take that Phoenix Blood Ice Lotus Become one of the rare Six Spiritual Root monks in the world The One horned Ghost King knew his situation, there was nothing to hide, but there was no need to explain in detail about the Dragon Horn Root and Kirin Thunderwood.
Seeing this scene, all the monks outside the venue took a breath.Therefore, the demise of the Blood Demon Sect is God s will.
After seeing Qingyang, the people at the auction did not dare to neglect, and a woman took the initiative to greet her.Why don t you just surrender quickly These Erectile Dysfunction & Oral Medication | Moorgate Andrology [MkSa6MjA4GN]
men in blood clothed didn t know Qingyang, but Duanmu Fei did.
Therefore, this type of spell is relatively useless and not widely spread.At this moment, Tian Dazhuang s face changed color, he exclaimed and stood in front of Qingyang.
Baimei Ghost King said Giant Ghost King, is this what you call the Divine Infant Garden Before the giant ghost king spoke, the long browed ghost king narrated He nodded excitedly Yes, this should be the legendary Divine Infant Garden.Xingjie also has some experience and can deal with it more calmly.
It s such a waste. As for whether Qingyang will be of the same mind as him, it shouldn t be a big problem.I, the Yang family, suffered this disaster entirely at my own fault.
It s just that the Nine Sons Ghost Lotus had the ninth level magic beast Black.Qingyang s voice was crisp and clear, which made people think more.
For Qingyang s speed, that s more than half a month s journey.God, Qingyang s injuries have long since healed, but Master Shi Han s vitality has been greatly damaged due to the Liuhe Tongzi Kung Fu, and Mei Qing has also been Super Slim Keto Gummies: [Reviews 2022] Beware Ingredients Side Effects? [yaFZk1mr5LP]
greatly frightened by a series of previous events, and needs to cultivate himself well
During the rest period, Qingyang took out the gourd of heaven and earth that Zhenjun Chiye helped him refine and gave it to Master Shi Han for help.
Even if it is not a rare treasure, as long as Qing can figure out the origin of the vision, Qingyang Yang also felt that the trip was worth it.After the death of Zhenjun Shifu, the humanoid monster seemed to have been drained of its energy and energy, and almost lost its ability to resist.
After the thunder and lightning passed, Qingyang did not stop.
His expression was arrogant and his clothes were arrogant.Due to the conflict of interests, the relationship between the two families is not very harmonious.
This spirit tree grows in the thunder pool and contains terrifying thunder attribute energy.The admiration and surrender in the bones can also be felt by the iron armed monkey s concern for the demon monkey group.
Unexpectedly, before they could reach the city gate, the foundation building monk sacrificed his flying sword and killed the person who escaped from the battle with one sword.The main hall was There was only one teleportation array inside, and the spiritual stones embedded in it exploded the moment Qingyang teleported over, probably because they had exhausted their energy.
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loner all these years.Although her injury was almost healed, she was slightly lacking in longevity, so she still had to make up for it if possible.
It s so simple, because there are many unknown hands hidden on his body, and these hands can launch fatal attacks at any time, making it difficult to guard against.However, this kid is really lucky, and his cultivation in the Qi Refining Stage can actually Live till now.
But he was defeated in the duel with Qingyang s overwhelming moves.It seemed that the Divine Pregnancy Fruit had no chance with them.
He could no longer use his true energy and spiritual energy, and his vision, hearing, and perception were also significantly reduced.Instead of wasting this opportunity, it is better to give it to Qing Week Seven on Testosterone [B86t_o-Epvr]
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Unexpectedly, the Xiaotian Demon King shook his head and said True Lord Crouching Tiger, one of us is the lord Apple cider vinegar gummies shorts virals [PpIWzGAuajZ]
of Crouching Tiger City, and the other is the second master of Hengyun Mountain.When he rushed to the gate, the second young master of the Yang family had already died of anger, and Qingyang had also taken back the wind improving gourd.
Sometimes Neither master nor apprentice can be trusted, not to mention they are just friends.After learning about the Duanmu family s trouble, she didn t rush to show up.
This monster was thin and small. It looked like a child at first glance, but upon closer inspection, it looked like a human being.compared with Qingyang, they felt that their cultivation was simply too slow.
He didn t say anything else after that, and the whole cave fell into a trap.The Giant Ghost King and the Long Eyebrow Ghost King were secretly frightened as they watched.
He died in a secluded place, and some people said that the One Horned Ghost King was killed by someone.If the remaining two Yuanying ghost cultivators hadn t immediately made up for it, the Ten Kings Realm Sealing Formation might have been broken.
Now that Zhenjun Chiye has taken over, the overall strength of Zhenren Guihe is at least twice as strong as that of Zhenjun Chiye.In other words, this ancient continent EVERYTHING I Eat To Lose Weight On Vacation [NVC9lRJy_ci]
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How can there be less ammunition. So ammunition is not the problem, the physical and energy consumption of shooting is the biggest problem.But this is the world of heroes and there is no need for those at all, so his solution is extremely simple.
Unless they were sworn enemies or had personal grudges, not many nobles would die during the battle or be killed afterwards.Of course, the convoy also took away the corpses of demons above the extraordinary level and handed them over to the Storm Chamber of Commerce.
In fact, the two major guilds have also specially trained many players who take the heroic route, and the other party can also equip ballistas.baby Yes, in Zhao Hao s Full Women's Keto Meal Plan - What You Should Eat in a Day [Bu2VTmA_wjm]
eyes, high sea ships, shipwrights, blueprints, and shipbuilding equipment are treasures, but ordnance and supplies are not.
Except for the sea tribe, the river bottom hundreds of meters deep is a dead end for normal creatures to enter.In other words, even if the legions that can cope with such an attack can be drawn out, the number is far from enough.
Although the opponent is not afraid of vampires, they can still cause damage, so there is no problem in covering them.It is our turn to stand guard at this moment. If you don t do S’mores for weight loss?! [8RFPG7J250W]
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It s really not easy to talk about the next plan in the forum.The thieves, wearing leather armor and Freedom Front uniforms, climbed along the rope, carrying a rope ladder tied to their bodies.
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of a god but no corresponding power, so it is not surprising that he was beaten.After all, the Storm Territory does lack a maritime hero now.
The eight principalities are just called principalities in name, but they are kingdoms in terms of strength.Although the quartermaster s words were mixed with a lot of nonsense, he also said the serious things.
After the Archangel landed, the Shadow Swordsmen were not polite and launched a siege without any moral ethics.It is impossible to see the bunker exit without getting close.
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the enemy must be defeated first.
Others will naturally have to find ways to hire caravans and the like to help transport.Life is an endless struggle for survival. Just wait, I not only want to survive, but I will also fight back to the capital to settle accounts with you.
Under the protection of the power of rules, even if the opponent bears such a heavy impact, he will only be stunned and will not be harmed.It can be said that this time it was completely stud.
Using this tactic, he delayed for a few more days. For him, every extra day he delays, the greater the chance of success of his plan.If the major aborigines send controlled monster races into the player s territory during the siege, does it count as How long does Viagra last? [TEkrJc4qsZd]
having offensive authority.
This is the name and introduction of the medicine in Zhao Hao s hand.finally reached Even Zhao Hao couldn t stand it at this time.
Yes
Yin Shilan was about to answer, but she suddenly stopped her voice and looked at the woman in black skirt with a look of reproach.The foundation building monks of the collection team fled immediately, without giving them a chance to silence them.
He asked with a frown. Elder Jian knew about the Ten Directions Sword Cultivation Technique , and his old rival Yun Xingyi practiced this technique.The clone is not accessible to Qi Refining monks, and it also allows the clone to break through and become a foundation building monk like a ***The Truth About Abs: Hidden Truths About Losing Belly Fat Fast [twOgmJ7pigg]
normal monk.
This is quite special. Because most caves will introduce spiritual veins into the training room instead of placing them in the middle of the hall.Using the authority given by Xu Peiran, he issued a mandatory task order to Li Shiming.
In other words, the Hao family hid the plants, even covering them together with the spiritual veins.Li Shiming didn t even have a rank here, so he had to give way when encountering the royal convoy.
The Monkey King and the four white monkeys were running around in the Nine Palace Sword Formation.After one attack, more than half of the spiritual energy in his body was consumed, and he could no longer sustain the second flying attack.
Outsiders think that he is preparing for spring. So no one came to disturb him.After connecting to the IBMz15, his five senses became the scanning device of the IBMz15.
The quality of the converted vajra power has been obviously improved, and the stimulation to the body is more intense.It turns out that this is the spirit stone. It seems that the world of immortality uses spirit stones as currency.
At this moment, he saw a second dark blue figure appear.The seaside was taken over by large ships until it was delivered to the sea near the sect.
But at the moment when his spiritual mind came into contact with the little flame, the small flame followed his spiritual mind and entered his body at an indescribable speed, or as if it was moving instantly.At this point, Master Song did not do anything. Li Shiming also obtained the sixth Foundation Establishment Pill, which was twice the minimum standard for three spiritual roots.
Li Shiming was not affected by this in his heart. He has been a man for two generations and has a very clear view of human nature.But even if the young man and Li Yuanba were only a short distance away from them, they had no intention of taking action.
He remembered reading reports about chicken mother beads in his previous life, including the highly toxic █ Kelly Slater talks Exercise, Diet, and Winning (insightful) █ [O9iMSeTtIOi]
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Thank you, uncle Li Shiming bowed and thanked. The sect gives the intermediate formation masters the best treatment, two thousand spirit stones per month, and formation materials worth the same two thousand spirit stones, but it also needs intermediate formation masters to serve the sect.Li Shiming s eyes swept over the round faced man s waist, and he immediately understood why the man called him Taoist friend.
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of time, a new passage was built, and a platform for people to rest was dug out at the underground exit.In known fields, the role that IBMz15 can play can be seen through the Magic Lotus.
It is a low profit business. Within the sect, there are not many junior spiritual cultivators.He controlled the copper corpse, and before taking his body away, he used the copper corpse s fingers to change the energy direction of the formation disk.
At the same time, they sent me messages to negotiate with me.After receiving the inheritance of the Jade Foot Relic, Buddha Jueyuan became the custodian of the Jade Foot Relic.
He was in a hurry to go to the cave and ignored the young man.Li Shiming also discovered that most of the rewards for tasks were spiritual stones, and there were not many tasks for good deeds.
Their speed was so fast that he had never seen them before.
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.