Posts Tagged: WannaCry


7
Nov 19

Study: Ransomware, Data Breaches at Hospitals tied to Uptick in Fatal Heart Attacks

Hospitals that have been hit by a data breach or ransomware attack can expect to see an increase in the death rate among heart patients in the following months or years because of cybersecurity remediation efforts, a new study posits. Health industry experts say the findings should prompt a larger review of how security — or the lack thereof — may be impacting patient outcomes.

Researchers at Vanderbilt University‘s Owen Graduate School of Management took the Department of Health and Human Services (HHS) list of healthcare data breaches and used it to drill down on data about patient mortality rates at more than 3,000 Medicare-certified hospitals, about 10 percent of which had experienced a data breach.

As PBS noted in its coverage of the Vanderbilt study, after data breaches as many as 36 additional deaths per 10,000 heart attacks occurred annually at the hundreds of hospitals examined.

The researchers found that for care centers that experienced a breach, it took an additional 2.7 minutes for suspected heart attack patients to receive an electrocardiogram.

“Breach remediation efforts were associated with deterioration in timeliness of care and patient outcomes,” the authors found. “Remediation activity may introduce changes that delay, complicate or disrupt health IT and patient care processes.”

Leo Scanlon, former deputy chief information security officer at the HHS, said the findings in this report practically beg for a similar study to be done in the United Kingdom, whose healthcare system was particularly disrupted by the Wannacry virus, a global contagion in May 2017 that spread through a Microsoft Windows vulnerability prevalent in older healthcare systems.

“The exploitation of cybersecurity vulnerabilities is killing people,” Scanlon told KrebsOnSecurity. “There is a lot of possible research that might be unleashed by this study. I believe that nothing less than a congressional investigation will give the subject the attention it deserves.”

A post-mortem on the impact of WannaCry found the outbreak cost U.K. hospitals almost $100 million pounds and caused significant disruption to patient care, such as the cancellation of some 19,000 appointments — including operations — and the disruption of IT systems for at least a third of all U.K. National Health Service (NHS) hospitals and eight percent of general practitioners. In several cases, hospitals in the U.K. were forced to divert emergency room visitors to other hospitals.

But what isn’t yet known is how Wannacry affected mortality rates among heart attack and stroke patients whose ambulances were diverted to other hospitals because of IT system outages related to the malware. Or how many hospitals and practices experienced delays in getting test results back needed to make critical healthcare decisions.

Scanlon said although he’s asked around quite a bit over the years to see if any researchers have taken up the challenge of finding out, and that so far he hasn’t found anyone doing that analysis.

“A colleague who is familiar with large scale healthcare data sets told me that unless you are associated with a research institution, it would be almost impossible to pry that kind of data out of the institutions that have it,” Scanlon said. “The problem is this data is hard to come by — nobody likes to admit that death can be attributable to a non-natural cause like this — and is otherwise considered sensitive at a very high and proprietary level by the institutions that have the facts.”

A study published in the April 2017 edition of The New England Journal of Medicine would seem to suggest applying the approach used by the Vanderbilt researchers to measuring patient outcomes at U.K. hospitals in the wake of Wannacry might be worth carrying out.

In the NEJM study, morbidity and mortality data was used to show that there is a measurable impact when ambulances and emergency response teams are removed from normal service and redirected to standby during public events like marathons and other potential targets of terrorism.

The study found that “medicare beneficiaries who were admitted to marathon-affected hospitals with acute myocardial infarction or cardiac arrest on marathon dates had longer ambulance transport times before noon (4.4 minutes longer) and higher 30-day mortality than beneficiaries who were hospitalized on nonmarathon dates.” Continue reading →


14
May 19

Microsoft Patches ‘Wormable’ Flaw in Windows XP, 7 and Windows 2003

Microsoft today is taking the unusual step of releasing security updates for unsupported but still widely-used Windows operating systems like XP and Windows 2003, citing the discovery of a “wormable” flaw that the company says could be used to fuel a fast-moving malware threat like the WannaCry ransomware attacks of 2017.

The May 2017 global malware epidemic WannaCry affected some 200,000 Windows systems in 150 countries. Source: Wikipedia.

The vulnerability (CVE-2019-0708) resides in the “remote desktop services” component built into supported versions of Windows, including Windows 7, Windows Server 2008 R2, and Windows Server 2008. It also is present in computers powered by Windows XP and Windows 2003, operating systems for which Microsoft long ago stopped shipping security updates.

Microsoft said the company has not yet observed any evidence of attacks against the dangerous security flaw, but that it is trying to head off a serious and imminent threat.

“While we have observed no exploitation of this vulnerability, it is highly likely that malicious actors will write an exploit for this vulnerability and incorporate it into their malware,” wrote Simon Pope, director of incident response for the Microsoft Security Response Center.

“This vulnerability is pre-authentication and requires no user interaction,” Pope said. “In other words, the vulnerability is ‘wormable,’ meaning that any future malware that exploits this vulnerability could propagate from vulnerable computer to vulnerable computer in a similar way as the WannaCry malware spread across the globe in 2017. It is important that affected systems are patched as quickly as possible to prevent such a scenario from happening.”

The WannaCry ransomware threat spread quickly across the world in May 2017 using a vulnerability that was particularly prevalent among systems running Windows XP and older versions of Windows. Microsoft had already released a patch for the flaw, but many older and vulnerable OSes were never updated. Europol estimated at the time that WannaCry spread to some 200,000 computers across 150 countries. Continue reading →


5
Sep 17

Who Is Marcus Hutchins?

In early August 2017, FBI agents in Las Vegas arrested 23-year-old British security researcher Marcus Hutchins on suspicion of authoring and/or selling “Kronos,” a strain of malware designed to steal online banking credentials. Hutchins was virtually unknown to most in the security community until May 2017 when the U.K. media revealed him as the “accidental hero” who inadvertently halted the global spread of WannaCry, a ransomware contagion that had taken the world by storm just days before.

Relatively few knew it before his arrest, but Hutchins has for many years authored the popular cybersecurity blog MalwareTech. When this fact became more widely known — combined with his hero status for halting Wannacry — a great many MalwareTech readers quickly leapt to his defense to denounce his arrest. They reasoned that the government’s case was built on flimsy and scant evidence, noting that Hutchins has worked tirelessly to expose cybercriminals and their malicious tools. To date, some 226 supporters have donated more than $14,000 to his defense fund.

Marcus Hutchins, just after he was revealed as the security expert who stopped the WannaCry worm. Image: twitter.com/malwaretechblog

Marcus Hutchins, just after he was revealed as the security expert who stopped the WannaCry worm. Image: twitter.com/malwaretechblog

At first, I did not believe the charges against Hutchins would hold up under scrutiny. But as I began to dig deeper into the history tied to dozens of hacker forum pseudonyms, email addresses and domains he apparently used over the past decade, a very different picture began to emerge.

In this post, I will attempt to describe and illustrate more than three weeks’ worth of connecting the dots from what appear to be Hutchins’ earliest hacker forum accounts to his real-life identity. The clues suggest that Hutchins began developing and selling malware in his mid-teens — only to later develop a change of heart and earnestly endeavor to leave that part of his life squarely in the rearview mirror.

GH0STHOSTING/IARKEY

I began this investigation with a simple search of domain name registration records at domaintools.com [full disclosure: Domain Tools recently was an advertiser on this site]. A search for “Marcus Hutchins” turned up a half dozen domains registered to a U.K. resident by the same name who supplied the email address “surfallday2day@hotmail.co.uk.”

One of those domains — Gh0sthosting[dot]com (the third character in that domain is a zero) — corresponds to a hosting service that was advertised and sold circa 2009-2010 on Hackforums[dot]net, a massively popular forum overrun with young, impressionable men who desperately wish to be elite coders or hackers (or at least recognized as such by their peers).

The surfallday2day@hotmail.co.uk address tied to Gh0sthosting’s initial domain registration records also was used to register a Skype account named Iarkey that listed its alias as “Marcus.” A Twitter account registered in 2009 under the nickname “Iarkey” points to Gh0sthosting[dot]com.

Gh0sthosting was sold by a Hackforums user who used the same Iarkey nickname, and in 2009 Iarkey told fellow Hackforums users in a sales thread for his business that Gh0sthosting was “mainly for blackhats wanting to phish.” In a separate post just a few days apart from that sales thread, Iarkey responds that he is “only 15” years old, and in another he confirms that his email address is surfallday2day@hotmail.co.uk.

daloseronly15

A review of the historic reputation tied to the Gh0sthosting domain suggests that at least some customers took Iarkey up on his offer: Malwaredomainlist.com, for example, shows that around this same time in 2009 Gh0sthosting was observed hosting plenty of malware, including trojan horse programs, phishing pages and malware exploits.

A “reverse WHOIS” search at Domaintools.com shows that Iarkey’s surfallday2day email address was used initially to register several other domains, including uploadwith[dot]us and thecodebases[dot]com.

Shortly after registering Gh0sthosting and other domains tied to his surfallday2day@hotmail.co.uk address, Iarkey evidently thought better of including his real name and email address in his domain name registration records. Thecodebases[dot]com, for example, changed its WHOIS ownership to a “James Green” in the U.K., and switched the email to “herpderpderp2@hotmail.co.uk.”

A reverse WHOIS lookup at domaintools.com for that email address shows it was used to register a Hackforums parody (or phishing?) site called Heckforums[dot]net. The domain records showed this address was tied to a Hackforums clique called “Atthackers.” The records also listed a Michael Chanata from Florida as the owner. We’ll come back to Michael Chanata and Atthackers at the end of this post. Continue reading →


12
May 17

U.K. Hospitals Hit in Widespread Ransomware Attack

At least 16 hospitals in the United Kingdom are being forced to divert emergency patients today after computer systems there were infected with ransomware, a type of malicious software that encrypts a victim’s documents, images, music and other files unless the victim pays for a key to unlock them.

It remains unclear exactly how this ransomware strain is being disseminated and why it appears to have spread so quickly, but there are indications the malware may be spreading to vulnerable systems through a security hole in Windows that was recently patched by Microsoft.

The ransom note left behind on computers infected with the Wanna Decryptor ransomware strain. Image: BleepingComputer.

The ransom note left behind on computers infected with the Wanna Decryptor ransomware strain. Image: BleepingComputer.

In a statement, the U.K.’s National Health Service (NHS) said a number of NHS organizations had suffered ransomware attacks.

“This attack was not specifically targeted at the NHS and is affecting organizations from across a range of sectors,” the NHS said. “At this stage we do not have any evidence that patient data has been accessed.”

According to Reuters, hospitals across England are diverting patients requiring emergency treatment away from the affected hospitals, and the public is being advised to seek medical care only for acute medical conditions.

NHS said the investigation is at an early stage but the ransomware that hit at least 16 NHS facilities is a variant of Wana Decryptor (a.k.a. “WannaCry“), a ransomware strain that surfaced roughly two weeks ago.

Lawrence Abrams, owner of the tech-help forum BleepingComputer, said Wana Decryptor wasn’t a big player in the ransomware space until the past 24 hours, when something caused it to be spread far and wide very quickly.

“It’s been out for almost two weeks now, and until very recently it’s just been sitting there,” Abrams said. “Today, it just went nuts. This is by far the biggest outbreak we have seen to date.”

For example, the same ransomware strain apparently today also hit Telefonica, one of Spain’s largest telecommunications companies. According to an article on BleepingComputer, Telefonica has responded by “desperately telling employees to shut down computers and VPN connections in order to limit the ransomware’s reach.”

An alert published by Spain’s national computer emergency response team (CCN-CERT) suggested that the reason for the rapid spread of Wana Decryptor is that it is leveraging a software vulnerability in Windows computers that Microsoft patched in March. Continue reading →