Showing posts with label Computer worm. Show all posts
Showing posts with label Computer worm. Show all posts

Tuesday, May 16, 2017

New Variant Of "WannaCry" Virus Emerges Infecting 3,600 Computers Per Hour

Update: according to the latest data from Check Point Software, cited by Reuters, a new variant of the WannaCry ransomware is now infecting on average 3,600 computers per hour.



* * *


Governments and companies around the world began to gain the upper hand against the first wave of the unrivaled global cyberattack this morning.





More than 200,000 computers in at least 150 countries have so far been infected, according to Europol, the European Union’s law enforcement agency. The U.K.’s National Cyber Security Centre said new cases of so-called ransomware are possible “at a significant scale.”



"For now, it does not look like the number of infected computers is increasing," said a Europol spokesman. "We will get a decryption tool eventually, but for the moment, it’s still a live threat and we’re still in disaster recovery mode."



The initial attack was stifled when a security researcher disabled a key mechanism used by the worm to spread, but experts warned the hackers were likely to mount a second attack because so many users of personal computers with Microsoft operating systems couldn’t or didn’t download a security patch released in March that Microsoft had labeled “critical.”





“I will confess that I was unaware registering the domain would stop the malware until after I registered it, so initially it was accidental,” wrote the researcher, who uses the Twitter name @MalwareTechBlog.



“So long as the domain isn’t revoked, this particular strain will no longer cause harm, but patch your systems ASAP as they will try again.”



But the world is still digging out...





Europol executive director Rob Wainwright told Britain"s ITV television on Sunday that the attack had been "unprecedented". "We"ve never seen anything like this," he said.



In China, "hundreds of thousands" of computers were affected, including petrol stations, cash machines and universities, according to Qihoo 360, one of China"s largest providers of antivirus software. The malware affected computers at “several” unspecified Chinese government departments, the country’s Cyberspace Administration said on its WeChat blog Monday. Since that initial attack, agencies and companies from the police to banks and communications firms have put preventive measures in place, while Qihoo 360 Technology Co., Tencent Holdings Ltd. and other cybersecurity firms have begun making protection tools available, the internet overseer said.



French carmaker Renault said its Douai plant, one of its biggest sites in France employing 5,500 people, would be shut on Monday as systems were upgraded.



At Germany’s national Deutsche Bahn railroad, workers were laboring under "high pressure" Monday to repair remaining glitches with train stations’ electronic departure boards, a spokesman said.



In Japan, Hitachi Ltd. said that some of its computers had been affected.



In South Korea, CJ CGV Co., the country’s largest cinema chain, said advertising servers and displays at film theaters were hit by ransomware. Movie servers weren’t affected and are running as normal, it said in a text message Monday.



Indonesia’s government reported two hospitals in Jakarta were affected.



About 97 percent of U.K. facilities and doctors disabled by the attack were back to normal operation, Home Secretary Amber Rudd said Saturday after a government meeting. At the height of the attack Friday and early Saturday, 48 organizations in the NHS were affected, and hospitals in London, North West England and Central England urged people with non-emergency conditions to stay away as technicians tried to stop the spread of the malicious software.



As Microsoft"s president and chief legal officer, Brad Smith, said in a blog post Sunday:





"An equivalent scenario with conventional weapons would be the US military having some of its Tomahawk missiles stolen," Smith wrote.



"The governments of the world should treat this attack as a wake up call."



And waking up they seem to be...(as Axios notes)





President Trump"s homeland security adviser, Tom Bossert, said that Friday"s global cyberattack is something that "for right now, we"ve got under control" in the U.S., reports AP:



"Bossert tells ABC"s "Good Morning America" that the malware is an "extremely serious threat" that could inspire copycat attacks. But Microsoft"s security patch released in March should protect U.S. networks for those who install it."



"Micrsoft"s top lawyer has criticized U.S. intelligence for "stockpiling" software code that can aid hackers. Cybersecurity experts say the unknown hackers behind the latest attacks used a vulnerability exposed in U.S. government documents leaked online."



"Bossert said "criminals" are responsible, not the U.S. government. Bossert says the U.S. hasn"t ruled out involvement by a foreign government, but that the recent ransom demands suggest a criminal network."



However, new variants of the rapidly replicating malware were discovered Sunday. One did not include the so-called kill switch that allowed researchers to interrupt the malware"s spread Friday by diverting it to a dead end on the internet.


As Bloomberg reports that Matt Suiche, founder of United Arab Emirates-based cyber security firm Comae Technologies warns a new version of the ransomware may have also been spreading over the weekend.


About 50% of machines that would have spread the infection by the second variation of the malware have Russian I.P. addresses, according to Suiche.


Over 40,000 machines appear to have been infected by the second variation of the malware already.



Ryan Kalember, senior vice president at Proofpoint Inc., which helped stop its spread, said the version without a kill switch could spread. It was benign because it contained a flaw that prevented it from taking over computers and demanding ransom to unlock files but other more malicious ones will likely pop up.


"We haven"t fully dodged this bullet at all until we"re patched against the vulnerability itself," Kalember said.

Sunday, May 14, 2017

"Over 200,000 Infected": Europol Fears Computers Simply Won't Start Monday After "Unrivalled" Global Cyberattack

There was a silver lining in what has been dubbed the "world"s biggest ransomware attack" - it struck on Friday mid-afternoon (in Europe), just as businesses were winding down for the weekend, and as a result the full impact of the forced system shutdowns would not be fully felt over the weekend when businesses and infrastructure are generally operating at a subdued pace. However, with the weekend coming to a close, the full extent of the inflicted damage may become apparent in just a few hours.


That was the warning by Europol Executive Director Rob Wainwright who on ITV’s “Peston on Sunday” broadcast, said that additional disruptions are likely as people return to work Monday and turn on their desktop systems, and as a result the "unrivaled" global cyberattack is poised to continue claiming victims.



Speaking to ITV’s, Wainwright added the attack was indiscriminate across the private and public sectors.


“At the moment we are in the face of an escalating threat, the numbers are going up, I am worried about how the numbers will continue to grow when people go to work and turn their machines on Monday morning."


“The latest count is over 200,000 victims in at least 150 countries. Many of those will be businesses including large corporations.”


“We’ve seen the rise of ransomware becoming the principal threat, I think, but this is something we haven’t seen before -- the global reach is unprecedented,” Wainwright also said. He also said that organisations across the globe, including investigators from the National Crime Agency (NCA), are now working non-stop to hunt down those responsible for the ransomware.


As we reported on Saturday, the initial attack was halted when a security researcher disabled a key mechanism used by the worm to spread, but experts said the hackers were likely to mount a second attack because so many users of personal computers with Microsoft operating systems couldn’t or didn’t download a security patch released in March that Microsoft had labeled “critical.” Microsoft said in a blog post Saturday that it was taking the “highly unusual“ step of providing the patch for older versions of Windows it was otherwise no longer supporting, including Windows XP and Windows Server 2003.




As the WSJ confirms, the attacks could worsen on Monday morning because of how the virus works.





The virus contains two parts. One is the ransomware, which locks the computer files and displays a message saying that the files will be locked and eventually destroyed unless the user sends payment over the internet to the hacker.



The other part is known as the "spreader." Once the virus makes its way onto one computer--perhaps when a user opens an infected email attachment--the spreader transmits itself to other computers on the network.



The British researcher, who wishes to be identified only as MalwareTech, found a kill switch in the spreader. The spreader was designed to contact a web address to see whether it should further spread itself, but hackers hadn"t bought that web address. So MalwareTech did, and effectively stopped the virus"s spread. It meant that one computer in a network could be infected, but the worm wouldn"t spread to the rest of the network.



Cybersecurity experts expect the latest versions of the worm to have no kill switch for the spreader. So when workers return to the office Monday morning and turn on their computers, they might open an infected email attachment or connect an already-infected laptop to their organization"s non-security-patched network and spread the worm.



There was some good news: having tipped their hand on Friday, and allowing hacking countermeasures to be implemented, about 97% of U.K. facilities and doctors disabled by the attack were back to normal operation, Home Secretary Amber Rudd said Saturday after a government meeting. As reported on Friday, at the height of the attack Friday and early Saturday, 48 organizations in the NHS were affected, and hospitals in London, North West England and Central England urged people with non-emergency conditions to stay away as technicians tried to stop the spread of the malicious software.


“There will be lessons to learn from what appears to be the biggest criminal cyber-attack in history,” Rudd said cited by Bloomberg in response to a letter from Jonathan Ashworth, the shadow secretary of state for health.


Meanwhile, according to Tom Robinson, chief operating officer and co-founder of Elliptic Enterprises Ltd., a ransomware consultant that works with banks and companies, victims have already paid about $30,000 in ransom so far, with the total expected to rise substantially next week, said . Robinson, in an interview by email, said he calculated the total based on payments tracked to Bitcoin addresses specified in the ransom demands. The number, which is likely a conservative estimate, will only embolden the hackers to become even more aggressive in their next attack.





Ransomware is a particularly stubborn problem because victims are often tricked into allowing the malicious software to run on their computers, and the encryption happens too fast for security software to catch it. Some security expects calculate that ransomware may bring in as much as $1 billion a year in revenue for the attackers.



According to Bloomberg, last year an acute-care hospital in Hollywood paid $17,000 in bitcoin to an extortionist who hijacked its computer systems and forced doctors and staff to revert to pen and paper for record-keeping.


On one hand, it is probable that the weekend gave many companies the opportunity to prepare for the next ransomware attack: "While any sized company could be vulnerable, many large organizations with robust security departments would have prioritized the update that Microsoft released in March and wouldn’t be vulnerable to Friday’s attack."


Even so, it does not explain why some of the world"s biggest corporations were so strikingly unprepared for Friday"s events. 





A spokesman for Spain’s Telefonica SA said the hack affected some employees at its headquarters, but the phone company is attacked frequently and the impact of Friday’s incident wasn’t major. FedEx said it was “experiencing interference,” the Associated Press reported.



Renault halted production at some factories to stop the virus from spreading, a spokesman said Saturday, while Nissan’s U.K. car plant in Sunderland, in northeast England, was affected without causing any major impact on business, an official said.



In Germany, Deutsche Bahn faced “technical disruptions” on electronic displays at train stations, but travel was unaffected, the company said in a statement on its website. Newspaper reports showed images of a ransomware message on display screens blocking train information.



Russia’s Interior Ministry, with oversight of the police forces, said about “1,000 computers were infected,” which it described as less than 1 percent of the total, according to its website.



Indonesia’s government reported two hospitals in Jakarta were affected.



Meanwhile, the latest anti-Russia narrative is growing.


"There is a high probability that Russian-language cybercriminals were behind the attack" said Aleks Gostev, chief cybersecurity expert for Kaspersky Labs. “Ransomware is traditionally their topic,” he said. “The geography of attacks that hit post-Soviet Union most also suggests that.” In retrospect, what more convenient confluence of events could there be than having a handy justification for Q2 GDP missing again - just blame it on the computer virus - and accusing Russia of being responsible for the latest global slowdown.

Saturday, May 13, 2017

24 Hours Later: "Unprecedented" Fallout From "Biggest Ransomware Attack In History"

24 hours after it first emerged, it has been called the first global, coordinated ransomware attack using hacking tools developed by the NSA, crippling over a dozen hospitals across the UK, mass transit around Europe, car factories in France and the UK, universities in China, corporations in the US, banks in Russia and countless other mission-critical businesses and infrastructure.


According to experts, "this could be one of the worst-ever recorded attacks of its kind." The security researcher who tweets and blogs as MalwareTech told The Intercept, “I’ve never seen anything like this with ransomware,” and “the last worm of this degree I can remember is Conficker.” Conficker was a notorious Windows worm first spotted in 2008; it went on to infect over 9 million computers in nearly 200 countries.


The fallout, according to cyber-specialists, has been "unprecedented": it has left unprepared governments, companies and security experts from China to the United Kingdom on Saturday reeling, and racing to contain the damage from the audacious cyberattack that spread quickly across the globe, raising fears that people would not be able to meet ransom demands before their data are destroyed.


As reported yesterday, the global efforts come less than a day after malicious software, transmitted via email and stolen from the National Security Agency, exposed vulnerabilities in computer systems in almost 100 countries in one of the largest “ransomware” attacks on record. The cyberattackers took over the computers, encrypted the information on them and then demanded payment of $300 or more from users in the form of bitcoin to unlock the devices.


The ransomware was subsequently identified as a new variant of "WannaCry" that had the ability to automatically spread across large networks by exploiting a known bug in Microsoft"s Windows operating system.



The ransomware has been identifed as WannaCry


The hackers, who have not come forward to claim responsibility or otherwise been identified, likely made it a "worm", or self spreading malware, by exploiting a piece of NSA code known as "Eternal Blue" that was released last month by a group known as the Shadow Brokers (see "Hacker Group Releases Password To NSA"s "Top Secret Arsenal" In Protest Of Trump Betrayal") , researchers with several private cyber security firms said.


"This is one of the largest global ransomware attacks the cyber community has ever seen," said Rich Barger, director of threat research with Splunk. The extremely well coordinated attack first emerged in the United Kingdom around noon on Friday and spread like wildefire around the globe. According to the Times "it has set off fears that the effects of the continuing threat will be felt for months, if not years" and raised questions about the intentions of the hackers: Did they carry out the attack for mere financial gain or for other unknown reasons?


The animated map below shows the speed and scale of the global infestation which took just a few hours to cover the globe:



Meanwhile, some of the world’s largest institutions and government agencies have been affected, including the Russian Interior Ministry, FedEx in the United States and Britain’s National Health Service. As people fretted over whether to pay the digital ransom or lose data from their computers, experts said the attackers might pocket more than $1 billion worldwide before the deadline ran out to unlock the machines.


Across Asia, several universities and organizations said they had been affected. In China, the virus hit the computer networks of both companies and universities, according to the state-run news media. News about the attack began trending on Chinese social media on Saturday, though most attention was focused on university networks, where there were concerns about students losing access to their academic work. The attack, however, focused on the UK and Europe where in addition to the British healthcare system, companies like Deutsche Bahn, the German transport giant; Telefónica, a Spanish telecommunications firm; and Renault, the French automaker, said some of their systems had been affected.


"Seeing a large telco like Telefonica get hit is going to get everybody worried," said Chris Wysopal, chief technology officer with cyber security firm Veracode.


The British National Health Service said that 45 of its hospitals, doctors’ offices and ambulance companies had been crippled — making it perhaps one of the largest institutions affected worldwide. Surgical procedures were canceled and some hospital operations shut down as government officials struggled to respond to the attack.


“We are not able to tell you who is behind that attack,” Amber Rudd, Britain’s home secretary, told the British Broadcasting Corporation on Saturday. “That work is still ongoing.”


Things only got worse on Saturday as auto production facilities across Europe have been shuttered, including car plants in the UK and France, in the aftermath of the cyberattack.




In total, more than 75,000 computers in 99 countries were compromised in Friday’s attack, with a heavy concentration of infections in Russia and Ukraine, according to Dutch security company Avast Software BV. Russia’s Interior Ministry, with oversees the country’s police forces, said “around 1,000 computers were infected,” which it described as less than 1 percent of the total, the New York Times reported. The ministry said technicians had stopped the attack and were updating the department’s “antivirus defense systems,” according to the Times. Russia"s RIA reported that the central bank said on Saturday it had detected "massive" cyber attacks on domestic banks, which successfully thwarted them.


* * *


There has been some good news: an ingenious discovery appears to have halted the spread of the virus for now. 


As part of the digital attack, the hackers included a way of disabling the malware in case they wanted to shut down their activities, Ars Technica reported. To do so, the assailants included code in the ransomware that would stop it from spreading if the virus sent an online request to a website created by the attackers. The kill switch would stop the malware from spreading as soon as the website went online and communicated with the spreading digital virus.


A British-based researcher, who declined to give his name, registered a
domain that he noticed the malware was trying to connect to, limiting
the worm"s spread. When the 22-year-old British researcher, whose Twitter handle is @MalwareTechBlog, confirmed his involvement but insisted on anonymity because he did not want the public scrutiny, saw that the kill switch’s domain name — a long and complicated set of letters — had yet to be registered, he bought it himself. By making the site go live, the researcher shut down the hacking attack before it could fully spread to the United States.


However, this temporary workaround will only last for a few days if not hours.


“I will confess that I was unaware registering the domain would stop the malware until after I registered it, so initially it was accidental,” wrote the @MalwareTechBlog researcher. “So long as the domain isn’t revoked, this particular strain will no longer cause harm, but patch your systems ASAP as they will try again.”



“The kill switch is why the U.S. hasn’t been touched so far,” said Matthieu Suiche, founder of Comae Technologies, a cybersecurity company in the United Arab Emirates. “But it’s only temporary. All the attackers would have to do is create a variant of the hack with a different domain name. I would expect them to do that.”


Adds Reuters: "We are on a downward slope, the infections are extremely few, because the malware is not able to connect to the registered domain," said Vikram Thakur, principal research manager at Symantec.


"The numbers are extremely low and coming down fast." But the attackers may yet tweak the code and restart the cycle. The British-based researcher who may have foiled the ransomware"s spread told Reuters he had not seen any such tweaks yet, "but they will."


* * *


Meanwhile, questions are mounting why code created by the NSA. has i) fallen in the wrong hands and ii) is being used to hold the world hostage. As the NYT notes, the ability of the cyberattack to spread so quickly was partly because of its high level of sophistication.


The malware, experts said, was based on a method that the N.S.A. is believed to have developed as part of its arsenal of cyberweapons. Last summer, a group calling itself the “Shadow Brokers” posted online digital tools that it had stolen from the United States government’s stockpile of hacking weapons.  The connection to the N.S.A. is likely to draw further criticism from privacy advocates who have repeatedly called for a clampdown on how the agency collects information online.





Brian Lord, a former deputy director for intelligence and cyber operations at Government Communications Headquarters, Britain’s equivalent to the N.S.A., said that any investigation, which would include the F.B.I. and the National Crime Agency of Britain, would take months to name the potential attackers, if it ever does. And by focusing the attacks on large institutions with a track record of not keeping their technology systems up-to-date, global criminal organizations were cherry-picking easy targets that were highly susceptible to such hacks, according to Mr. Lord.



“Serious organized crime is looking to these new technologies to the maximum effect,” Mr. Lord said. “With cybercrime, you can operate globally without leaving where you already are.”



He added of this attack: “It was well thought-out, well timed and well coordinated. But, fundamentally, there is nothing unusual about its delivery. It is still fundamentally robbery and extortion.”



For now, the victims - both actual and potential - may have bought themselves some time. As part of the efforts to combat the attack, Microsoft, whose Windows software lies at the heart of the potential hacking vulnerability, released a software update available to those affected by the attack and others who could be potential targets. Microsoft took the “highly unusual” step of securing early operating systems in the wake of a massive ransomware attack that wreaked havoc on global computer networks, including the UK’s National Health Service. Overnight, Microsoft XP received the new security patch three years after the computer giant discontinued support for the OS.


“Seeing businesses and individuals affected by cyberattacks, such as the ones reported today [Friday], was painful,” a Microsoft statement read. “We are taking the highly unusual step of providing a security update for all customers to protect Windows platforms that are in custom support only, including Windows XP, Windows 8, and Windows Server 2003.”


Security experts however said the upgrade came too late for many of the tens of thousands of machines that were locked out and whose data could be erased if people did not pay the ransom. Earlier this year, Microsoft created a patch called MS17-010 to guard against the virus. But older, unsupported operating systems were not included in the update.


Making matters worse, government officials and industry watchers also warned on Saturday that other hackers might now try to use the global ransomware attack for their own means, potentially tweaking the code and developing their own targets for new cyberattacks.


* * *


Finally, there is the question who is behind this coordinated global attack. Not surprisingly, Russia has been named. There is a high-probability that Russian-language cyber-criminals were behind the attack, said Aleks Gostev, chief cybersecurity expert for Kaspersky Labs. “Ransomware is traditionally their topic,” he said cited by Bloomberg. “The geography of attacks that hit post-Soviet Union most also suggests that.”


Whoever is the responsible party behind this first, global, coordinated ransomware attack, the have demonstrated one thing: the world is thoroughly unprepared for cyberwar.


“As with everything in cyber, we’re now waiting for the next type of attack,” Paul Bantick, a cyber security expert at Beazley, a global insurance underwriter, told the NYT.


“Ransomware like this has been on the rise over the last 18 months,” he added. “This represents the next step that people were expecting.”


As such, it is only a matter of time now before an even greater, more destructive cyberattack is unleashed on the world.