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/
Si se garantizara la seguridad de los ciclistas y se construyeran nuevas vías especiales para ellos, 71% de los entrevistados reconocieron que utilizarían la bicicleta como medio de transporte.
On, la innovadora marca de ropa deportiva con sede en Suiza, ha dado un paso audaz hacia la optimización de su cadena de suministro al asociarse con Verity, un líder en inteligencia artificial y robótica.
Los entrevistados para este reporte coinciden en afirmar que la asociación con un 3PL integral experto, sea en gestión de operaciones como de bienes raíces, puede proporcionar una solución perfecta y potente.
IDC calcula que las empresas dedicarán al menos 28% de su presupuesto de TI a la contratación de servicios en la nube durante 2017, con lo que inician la transición a un modelo de consumo bajo un esquema de Opex (gasto operativo).
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Niu Cheng said with tears streaming down his face, and even swore an oath, willing to make a divine soul oath.
Who will I seek revenge from then Some things are difficult to explain.He says Maybe there are other good things. Yes, this boy has such cultivation at such a young age and has great potential.
Let people do their best to obey fate, that is, let them think about it, and not leave people with excuses to let others go.But if something happens to one of the seven masters, it would be too hard for people to accept.
Although the purple backed alcoholic bee was fine, it was frightened by the red feathered eagle.When Qin Ruyan also lifts the restriction, and there is another mid stage Qi Refining monk, the chance of winning will be even greater.
He looked at Shi Feng and said, I didn t dare to confirm it before.The energy and blood in his body boiled, and he almost suffered internal injuries.
They stood in the distance and stared at the soul gathering flag in front of Qingyang, their eyes full of fear.Jiao Hong seemed to notice something was wrong. He frowned and said, Junior sister Xiqiu, did you notice anything unusual Why did I feel like someone rushed out of the center of the earth just now The fourth floor of the tower Feeling that what Xiqiu said seemed to make sense, Jiao Hong said to himself, This is strange.
The other party s words made Qingyang sigh in his heart, what does it mean to be unworthy What do you mean seeing her is hurting her What kind of exercise would have such inhumane requirements But thinking about the way he looked when he first met the Love Ending Fairy, she was as cold as an iceberg.
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If there is no movement here, no one will pay special attention to it.Following this wave of water, I walked forward and soon came to a deep pit at the bottom of the river.
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They only took action when they were angry. As a result, you Yin Yang Sect disciples took advantage of the strength of the crowd and injured my Demon Suppressing Hall disciples.If they accidentally missed the opportunity to come out, they would be completely ruined.
So the one eyed dragon Lengyu made a few attacks, forcing Deng Changting and Tian Shengcai to take a few steps back.We patrolled the mountains together for more than three months, and then I followed you for another seven or eight days.
At least dozens of Mountain Shocking Rats stood stunned.In the blink of an eye, a stick of incense passed. Zhenren Gu Hong couldn t bear it anymore.
No wonder, the foundation of the Tao family was temporarily built, but this spirit in front of me Mr.During this period, the inner courtyard competition was held for two more rounds.
This is the Qi Alchemist of Jinding Pavilion, Lan Yan, on the right.As a For a big family in Yuling City, reputation is still very important.
Coupled with some of his own trump cards, the victory should be It s not difficult.Naturally, I will not I will let you go and leave trouble for the Liang family.
The other party seemed unable to hear the teasing in Lu Dingshan s words.Although it is not comparable to Qingyang, it is much richer than before.
Everyone quickly stopped what they were doing and became cautious.I shouldn t let fellow Taoist Qingyang risk his life to climb the stone peak.
The alcoholic queen bee in the middle stage of foundation building is enough to hold back the seductress Sang Fan.Qiao Shan suddenly whistled, and the sparrow flew from his shoulder with a long cry and swooped towards the alcoholic bee on the opposite side.
It was much easier for four people to draw lots. Under the witness of everyone, the games were quickly assigned.But no matter what, those Monks with rich wealth or background can still afford it.
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End of Chapter What is this Li Shiming found a familiar spiritual object from the soul crystal ring.It had only been a short time, probably just a short time after coming into contact with the hell creatures, to have suffered such a huge loss.
Li Shiming still didn t know that he was famous. He was protected by Elder Ma and gave him a year to grow up.Especially the message sent by Brother Lou was an emergency recall order, and the most urgent one was used.
Looking at this resource point, he released his restrained breath without using his divine foot power.Cooperation is cooperation, and there is no conflict between interests and hostility.
Even if he is covered with wounds, the swordsman will still challenge him again and again, and he will not stop fighting as long as he does not die.He suspected that Jian Lao was a powerful person, or a being close to a powerful person.
The stone ring, an inheritance of the invisible magnetism magical power, should not have been taken out of the Baidi Sect.When the news spread, both the early and middle Nascent Soul monks and the senior monks were a little disappointed, but none of the Nascent Soul monks bothered Li Yuanba s retreat.
He discovered that these petals were, in a sense, similar to the energy flying swords in the Ten Thousand Swords Peak.After Li Yuanba paid homage to the Jianyi Chongxiao Pavilion scroll, Elder Jian regarded him as his true one.
He is going to complete the killing mission, and will spend a long time in constant fighting.He smiled and patted Xiaofeng s head, and then touched Phantom Dragon s body, feeling the rare family affection.
He changed directions from time to time, bypassing all the Nascent Soul cultivators along the way.The flying sword magic weapon has reached the limit of its power.
Excessive self confidence is arrogance Brother Wang He said in a deep voice as lightning flashed on his body.Yes, even if he is currently in the early stage of Yuanying, his combat power has already surpassed that of himself in the middle stage of Yuanying.
He felt it quietly and felt that the earth rules in Bansheng Cave were strengthening at this time.Yun Xiao, I have some research on the formation. I wonder if you can let me try first to see if I can break through this formation When he heard that there was only a 20 chance, he said quickly.
She took out a jade bottle from her body, threw it to Li Shiming, and then operated it in front of her.He gave Mo Yan some instructions before returning to the study and looking at the pictures left by Gu Jia.
Why is his sword cultivation talent so amazing Brother Lou couldn t help complaining.
067 billion yuan, which is very close to the previous high price of 67.However, the trading volume of Xingyu Technology is not large.
Even before Link TV was launched, more than a hundred major anchors were stationed, and even a super giant like the richest man Fang Hong personally stood up.As for having children, it is even more important. It will be delayed indefinitely.
At the same time, Lu Fanghong, who had several ships stationed at Xiaobenzi from the beautiful country, learned some highly confidential information while talking to Luo Qingan, and the senior officials were also making relevant arrangements.This is the preliminary work of artificial forestation, that is, it is necessary to first confirm what kind of sand.
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There were many anchors he wanted to poach, and he didn t know who would come out to intercept them.BYD s market value has evaporated by more than 40 billion.
There are also some owners of copycat phones who have some dreams.How could it be unexpected that God K has such great appeal But the village did not do this.
68 , with the stock price closing at 2240. At 02 o clock, it reached a new low in the near future.At the end, Ma Gaoyuan said in a deep voice The money actually doesn t cost that much.
33 yuan, the cumulative increase has been 3728. 21 , an increase of more than 37 times in less than four months.The market capitalization of the top four companies is Zhong Petroleum 15,400 yuan, ICBC 1.
If we just cut out the bottom line, we can also ask them to relax their restrictions.But Huayang Group has no connections in that area. Before listening to what Zhu Shun described, Qiu Guangcheng was shocked and convinced.
Wei Qiwei was looking at his heart at this moment, and subconsciously spat on Xingzi.Big bosses of that level are so low key. If it weren t for this incident, the public still doesn t know about it.
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only a little weaker than the monks who specialize in body refining, but stronger than ordinary monks of the same level.
After being reminded by Liang Yexuan, Yin Shilan suddenly woke up.The room was quiet for as long as a stick of incense.
Instead, they will use flying swords at a certain distance to kill the enemy with sword intent.He was shocked, Wan Jianfeng s sword intent was swallowing his sword intent.
Just now, Tie Laosan desperately vomited three mouthfuls of essence and blood, causing the super grade magic weapon to self destruct, severely injuring Wei Lin, who was at the same level.Fangshi is not within Zhongdu City, but twenty miles north of Zhongdu City.
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I wasn t completely sure at first, but with the help of fellow Taoists, my confidence has increased a lot Xu Chuan said firmly
Since the Muyang clover is important, I think there are many golden elixirs in the Shushan Sect.If he used that body to seize his body, he would be able to return to the strength of the foundation building stage within a few days.
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Taoist, are you a disciple of Tianhai Sect Li Shiming finally learned about Fan Yiyang s origins.But what he didn t understand was that if the Hao family was destroyed, shouldn t the remaining four immortal cultivating families find ways to divide the benefits And that spiritual vein, he didn t believe that the four immortal cultivating families didn t want to use it for their own use.
The Jindans, who had been taught a lesson by Zang Ancestor, looked ashamed.A clone appeared next to him, and he smiled at the clone.
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Being in it for a long time can speed up the growth rate of the refined corpse.Now, even if he does not use the top spiritual pill, his cultivation speed is comparable to that of Tianlinggen.
The grading of tasks is also very simple. First level tasks are combat tasks of the same level.When Peak Master Zhao returned to Gen Peak, the first thing he did was to imprison all the important personnel of Yun s Trading Company and find Yun Song, another foundation building monk of Yun s.
Li Shiming quickly thought of the major case mentioned by the young man Mo Yan.Li Shiming took a thread and hung the relic on his chest, so that he could absorb the high quality Vajra power infiltrated from the relic at all times.
With a gentle tap of his fingers, Li Shiming, who was in retreat with his five senses closed, sensed the call from outside.
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.