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Showing posts with label Malware. Show all posts
Showing posts with label Malware. Show all posts

Tuesday, 11 November 2014

APT28 — State Sponsored Russian Hacker Group



APT28 Hacker Group — Cyber Espionage Attacks Tied to Russian Government


Nearly a decade-long cyber espionage group that targeted a variety of Eastern European governments and security-related organizations including the North Atlantic Treaty Organization (NATO) has been exposed by a security research firm.

The US intelligence firm FireEye released its latest Advanced Persistent Threat (APT) report on Tuesday which said that the cyber attacks targeting various organisations would be of the interest to Russia, and "may be" sponsored by the Russian government.

The Report entitled "APT28: A Window Into Russia's Cyber Espionage Operationspublished by FireEye has "evidence of long-standing, focused operations that indicate a government sponsor - specifically, a government based in Moscow."
"Despite rumours of the Russian government's alleged involvement in high-profile government and military cyber attacks, there has been little hard evidence of any link to cyber espionage," Dan McWhorter, FireEye vice president of Threat Intelligence, wrote in a blog post discussing the report.
"FireEye's latest APT report sheds light on cyber espionage operations that we assess to be most likely to be sponsored by the Russian government, long believed to be a leader among major nations in performing sophisticated network attacks."
The cyber-espionage group believed to have been operating since at least 2007 in order to steal political and state secrets from businesses and foreign governments. The group launched a cyber attack on government in Georgia, Eastern Europe, as well as NATO and the Organisation for Security and Co-operation in Europe, according to the report.

Whereas the Russian cyber criminal groups are known for conducting massive cyber campaigns aimed at stealing money and financial information, but APT28 focuses on "privileged information related to governments, militaries and security organizations."
This group, unlike the China-based threat actors we track, does not appear to conduct widespread intellectual property theft for economic gain,” FireEye stated in the report. “Nor have we observed the group steal and profit from financial account information.
The security firm analyzed that the malware used by APT28 features a consistent use of the Russian language. Moreover, more than 96 percent of malware samples analyzed by the researchers were compiled between Monday and Friday, between 8AM and 6PM in the time zone paralleling working hours in Moscow and St. Petersburg. This regularity in the work suggests that the hackers were in Moscow, the report argues.
APT28 Hacker Group — Cyber Espionage Attacks Tied to Russian Government
The APT28 group has constantly updated their software and made the resulting binaries difficult to reverse engineer. It used a downloader tool that FireEye dubbed "SOURFACE", a backdoor labelled "EVILTOSS" that gives hackers remote access and a flexible modular implant called "CHOPSTICK" to enhance functionality of the espionage software.

Infection is usually achieved via a spear phishing email with a relevant lure and the malware hidden in the attachment. The hacker group has also created a number of fake domains for UK-based defence events, including the Counter Terror Expo, as part of the operation to gather intelligence on attendees.

Together with the help of above mentioned tools, the group gained access to the file system and registry; enumerate network resources; create processes; log keystrokes; access stored credentials; execute shellcode, and encrypt exfiltrated data uploaded with an RSA public key.
The coding practices evident in the group’s malware suggest both a high level of skill and an interest in complicating reverse engineering efforts,” the report stated.
In  another report , a top White House official has confirmed that Russian hackers have hacked into the unclassified White House computer networks. "we identified activity of concern on the unclassified Executive Office of the President network,".

Russia has been suspected of attacks on Ukraine too, including attempts to gain access to politicians’ mobile phone communications.

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Masque Attack — New iOS Vulnerability Allows Hackers to Replace Apps with Malware




Masque Attack — New iOS Vulnerability Allows Hackers to Replace Apps with Malware
Android have been a long time target for cyber criminals, but now it seems that they have turned their way towards iOS devices. Apple always says that hacking their devices is too difficult for cyber crooks, but a single app has made it possible for anyone to hack an iPhone.

A security flaw in Apple's mobile iOS operating system has made most iPhones and iPads vulnerable to cyber attacks by hackers seeking access to sensitive data and control of their devices, security researchers warned.

The details about this new vulnerability was published by the Cyber security firm FireEye on its blog on Monday, saying the flaw allows hackers to access devices by fooling users to download and install malicious iOS applications on their iPhone or iPad via tainted text messages, emails and Web links.

MASQUE ATTACK - REPLACING TRUSTED APPS
The malicious iOS apps can then be used to replace the legitimate apps, such as banking or social networking apps, that were installed through Apple's official App Store through a technique that FireEye has dubbed "Masque Attack."
"This vulnerability exists because iOS doesn't enforce matching certificates for apps with the same bundle identifier," the researchers said on the company's blog. "An attacker can leverage this vulnerability both through wireless networks and USB."
Masque attacks can be used by cyber criminals to steal banking and email login credentials or users’ other sensitive information.

Security researchers found that the Masque attack works on Apple’s mobile operating system including iOS 7.1.1, 7.1.2, 8.0, 8.1, and the 8.1.1 beta version and that all of the iPhones and iPads running iOS 7 or later, regardless of whether or not the device is jailbroken are at risk.

According to FireEye, the vast majority, i.e. 95 percent, of all iOS devices currently in use are potentially vulnerable to the attack.

MASQUE ATTACK IS MORE DANGEROUS THAN WIRELURKER
The Masque Attack technique is the same used by "WireLurker," malware attack discovered last week by security firm Palo Alto Networks targeting Apple users in China, that allowed unapproved apps designed to steal information downloaded from the Internet. But this recently-discovered malware threat is reportedly a "much bigger threat" than Wirelurker.
"Masque Attacks can pose much bigger threats than WireLurker," the researchers said. "Masque Attacks can replace authentic apps,such as banking and email apps, using attacker's malware through the Internet. That means the attacker can steal user's banking credentials by replacing an authentic banking app with an malware that has identical UI."

"Surprisingly, the malware can even access the original app's local data, which wasn't removed when the original app was replaced. These data may contain cached emails, or even login-tokens which the malware can use to log into the user's account directly."
HOW TO PROTECT YOURSELF FROM MASQUE ATTACK
Apple devices running iOS are long considered more safe from hackers than devices running OS like Microsoft’s Windows and Google’s Android, but iOS have now become more common targets for cybercriminals.

In order to avoid falling victim to Masque Attack, users can follow some simple steps given below:
  • Do not download any apps offer to you via email, text messages, or web links.
  • Don't install apps offered on pop-ups from third-party websites.
  • If iOS alerts a user about an "Untrusted App Developer," click "Don't Trust" on the alert and immediately uninstall the application.
In short, a simple way to safeguard your devices from these kind of threats is to avoid downloading apps from untrusted sources, and only download apps directly from the App Store.



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Darkhotel APT Malware Targets Global CEOs Using Hotel Internet




Darkhotel APT Malware Targets Global CEOs Using Hotel Internet
A seven-year-old cyber espionage campaign has targeted senior level executives from large global companies by using a specialized Advanced Persistent Threat (APT), zero-day exploits, and well-developed keyloggers to extract information from them when they stay in luxury hotels during their business trips.

The researchers at Moscow-based security firm Kaspersky Lab dubbed the threat as "DarkHotel APT," appear to have the ability to know in advance when a targeted executive checks in and checks out of a hotel.

The group has been operating in Asia since from 2009 but there have been infections recorded in the United States, South Korea, Singapore, Germany, Ireland and many others, as well. It uses hotel Wi-Fi networks to target elite executives at organisations in manufacturing, defense, investment capital, private equity, automotive and other industries.

The group has access to zero day vulnerabilities and exploits, and it used them to infect victims. Threat actors use three different malware distribution methods including malicious Wi-Fi networks, booby-trapped P2P torrents, and highly customized spear phishing, Kaspersky Lab reported in research paper.

When the target executives connect their devices to the hotel’s Wi-Fi or wired Internet access, they are shown bogus software updates, typically something that looks legitimate, for Adobe Flash, Google Toolbar, or Windows Messenger. But these updates also contain a type of malware called a Trojan dropper bundled with moremalware.
"When unsuspecting guests, including situationally aware corporate executives and high-tech entrepreneurs, travel to a variety of hotels and connect to the internet, they are infected with a rare APT Trojan posing as any one of several major software releases," the researchers wrote in a report published Monday. "These might be GoogleToolbar, Adobe flash, Windows Messenger, etc. This first stage of malware helps the attackers to identify more significant victims, leading to the selective download of more advanced stealing tools."
"At the hotels, these installs are selectively distributed to targeted individuals. This group of attackers seems to know in advance when these individuals will arrive and depart from their high-end hotels. So, the attackers lay in wait until these travelers arrive and connect to the internet."
The trojan dropper then installs various keyloggers and other tracking applications in order to track each of the victim's keystrokes and scan browsers for saved passwords, exposing a wealth of trade secrets and other secret information to the Darkhotel group.

In addition, the Darkhotel malware has ability to manipulate trusted digital certificates by factoring the underlying private keys of the cloned certificates generated using 512-bit md5 keys. The ability of attackers to factor the weak keys for use in such malware attacks has long been known, as advisories issued from Fox-IT, Microsoft, Mozilla, and Entrust warned in 2011.
"All related cases of signed Darkhotel malware share the same Root Certificate Authority and Intermediate Certificate Authority that issued certificates with weak md5 keys (RSA 512 bits)," Monday's Kaspersky report stated. "We are confident that our Darkhotel threat actor fraudulently duplicated these certificates to sign its malware. These keys were not stolen."
The DarkHotel malware operating group have also recently stolen third-party certificates to sign their malware.

In order to protect your device, the easiest way for you is to avoid connecting to hotel Wi-Fi networks or to any other public or untrusted networks, and instead, use your mobile device hotspot to get access to the Internet.


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Thursday, 6 November 2014

New BlackEnergy Crimeware Enhanced to Target Linux Systems and Cisco Routers




BlackEnergy Cyber Crimeware equipped to Target Linux Systems and Cisco Routers
Security researchers at Kaspersky Lab have unearthed new capabilities in the BlackEnergy Crimeware weapon that has now ability to hacking routers, Linux systems and Windows, targeting industry through Cisco network devices.

The antivirus vendor’s Global Research & Analysis Team released a report Monday detailing some of the new “relatively unknown” custom plug-in capabilities that the cyber espionage group has developed for BlackEnergy to attack Cisco networking devices and target ARM and MIPS platforms.

The malware was upgraded with custom plugins including Ciscoapi.tcl which targets The Borg's kit, and According to researchers, the upgraded version contained various wrappers over Cisco EXEC-commands and "a punchy message for Kaspersky," which reads, "F*uck U, Kaspersky!!! U never get a fresh B1ack En3rgy. So, thanks C1sco 1td for built-in backd00rs & 0-days."

BlackEnergy malware program was originally created and used by cybercriminals to launch Distributed Denial-of-Service (DDoS) attacks. The malware developer then added some custom plugins used to funnel banking information.

Most recently BlackEnergy malware was observed in alleged state-sponsored attacks targeting the North Atlantic Treaty Organization (NATO), Ukrainian and Polish government agencies, and a variety of sensitive European industries over the last year.

Now, the cyber espionage group has enhanced the malware program which also has the capabilities like port scanning, password stealing, system information gathering, digital certificate theft, remote desktop connectivity and even hard disk wiping and destroying.

In case if a victim knew of the BlackEnergy infection on their system, the attacker activates "dstr," the name of a plugin that destroys hard disks by overwriting them with random data. A second victim was compromised by using VPN credentials taken from the first victim.

Security researchers, Kurt Baumgartner and Maria Garnaeva, also came across BlackEnergy version that works on ARM and MIPS based systems and found that it has compromised networking devices manufactured by Cisco Systems.

However, the experts are not sure for the purpose of some plugins, including one that gathers device instance IDs and other information on connected USB drives and another that collects details on the BIOS (Basic Input/Output System), motherboard, and processor of infected systems.
"We are pretty sure that our list of [BlackEnergy] tools is not complete," the researchers wrote. "For example, we have yet to obtain the router access plugin, but we are confident that it exists. Evidence also supports the hypothesis that there is a decryption plugin for victim files."
Multiple unnamed victim companies in different countries were targeted with the latest BlackEnergy malware, including victims in Russia, Germany, Belgium, Turkey, Libya, Vietnam and several other countries.

Another Crimeware group, the Sandworm Team, believed to have used the BlackEnergy exclusively throughout 2014 at victim sites and included custom plugin and scripts of their own. Also last month, the Sandworm Team had targeted organizations across the world in an espionage campaign, and iSIGHT Partners revealed that the team used spear phishing as the major attack vector to victimize their targets.


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Tuesday, 4 November 2014

AirHopper — Hacking Into an Isolated Computer Using FM Radio Signals


Hacking into an Isolated Computer Using Just FM Radio Signals
In order to secure sensitive information such as Finance, many companies and government agencies generally use totally secure computer systems by making sure it aren't connected to any network at all. But the most secure systems aren't safe anymore.

Security researchers at the Cyber Security Labs at Ben Gurion University in Israel have found a way to snoop on a personal computer even with no network connection.

STEALING DATA USING RADIO SIGNALS
Researchers have developed a proof-of-concept malware that can infiltrate a closed network to lift data from a machine that has been kept completely isolated from the internet or any Wi-Fi connection by using little more than a mobile phone’s FM radio signals.

Researcher Mordechai Guri, along with Professor Yuval Elovici of Ben Gurion University, presented the research on Thursday in the 9th IEEE International Conference on Malicious and Unwanted Software (MALCON 2014) held at Denver.

This new technology is known as ‘AirHopper’ — basically a keylogger app to track what is being typed on the computer or the mobile phone.

AirHopper is a special type of keylogger because it uses radio frequencies to transmit data from a computer, all by exploiting the computer's monitor display, in order to evade air-gap security measures.
"This is the first time that a mobile phone is considered in an attack model as the intended receiver of maliciously crafted radio signals emitted from the screen of the isolated computer," according to arelease by Ben Gurion University.
HOW DOES AIRHOPPER WORK ?
The technology works by using the FM radio receiver included in some mobile phones. AirHopper is able to capture keystrokes by intercepting certain radio emissions from the monitor or display unit of the isolated computer.

The researchers can then pick up the FM signals on a nearby smartphone and translate the FM signals into the typed text.

LIMITATIONS
The technique is completely new, although it has some limitations. The team claims that textual and binary information can be gathered from a distance of up to 7 meters with an effective FM-bandwidth of 13-60 bps (bytes per second).
"AirHopper demonstrates how textual and binary data can be exfiltrated from physically a (sic) isolated computer to mobile phones at a distance of 1-7 meters, with effective bandwidth of 13-60 (bytes per second). Enough to steal a secret password."
This, according to researchers, is enough to steal a secret password. Therefore, in an effort to obtain secret data an attacker can infect a mobile phone of someone from the staff using AirHopper method worked in stealth mode, and then transmit the data.

VIDEO DEMONSTRATION AND POTENTIAL DANGER
Researchers have also provide the Proof-of-concept video, so you can Watch the demonstration video and find out if you should be worried or not.

According to the researchers, the Airhopper technique of data theft was developed by the University in order to protect against potential intrusions of its kind in the future.

"Such technique can be used potentially by people and organizations with malicious intentions and we want to start a discussion on how to mitigate this newly presented risk." said Dudu Mimran, chief technology officer of the Ben Gurion University’s cyber security labs.


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Saturday, 1 November 2014

AirHopper — Hacking Into an Isolated Computer Using FM Radio Signals


Hacking into an Isolated Computer Using Just FM Radio Signals
In order to secure sensitive information such as Finance, many companies and government agencies generally use totally secure computer systems by making sure it aren't connected to any network at all. But the most secure systems aren't safe anymore.

Security researchers at the Cyber Security Labs at Ben Gurion University in Israel have found a way to snoop on a personal computer even with no network connection.

STEALING DATA USING RADIO SIGNALS
Researchers have developed a proof-of-concept malware that can infiltrate a closed network to lift data from a machine that has been kept completely isolated from the internet or any Wi-Fi connection by using little more than a mobile phone’s FM radio signals.

Researcher Mordechai Guri, along with Professor Yuval Elovici of Ben Gurion University, presented the research on Thursday in the 9th IEEE International Conference on Malicious and Unwanted Software (MALCON 2014) held at Denver.

This new technology is known as ‘AirHopper’ — basically a keylogger app to track what is being typed on the computer or the mobile phone.

AirHopper is a special type of keylogger because it uses radio frequencies to transmit data from a computer, all by exploiting the computer's monitor display, in order to evade air-gap security measures.
"This is the first time that a mobile phone is considered in an attack model as the intended receiver of maliciously crafted radio signals emitted from the screen of the isolated computer," according to arelease by Ben Gurion University.
HOW DOES AIRHOPPER WORK ?
The technology works by using the FM radio receiver included in some mobile phones. AirHopper is able to capture keystrokes by intercepting certain radio emissions from the monitor or display unit of the isolated computer.

The researchers can then pick up the FM signals on a nearby smartphone and translate the FM signals into the typed text.

LIMITATIONS
The technique is completely new, although it has some limitations. The team claims that textual and binary information can be gathered from a distance of up to 7 meters with an effective FM-bandwidth of 13-60 bps (bytes per second).
"AirHopper demonstrates how textual and binary data can be exfiltrated from physically a (sic) isolated computer to mobile phones at a distance of 1-7 meters, with effective bandwidth of 13-60 (bytes per second). Enough to steal a secret password."
This, according to researchers, is enough to steal a secret password. Therefore, in an effort to obtain secret data an attacker can infect a mobile phone of someone from the staff using AirHopper method worked in stealth mode, and then transmit the data.


"Such technique can be used potentially by people and organizations with malicious intentions and we want to start a discussion on how to mitigate this newly presented risk." said Dudu Mimran, chief technology officer of the Ben Gurion University’s cyber security labs.





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Sunday, 26 October 2014

Koler Android Ransomware Learns to Spread via SMS



Koler Android Ransomware Learns to Spreads via SMS
Users of Android operating system are warned of a new variant of Android malware Koler that spreads itself via text message and holds the victim’s infected mobile phone hostage until a ransom is paid.

Researchers observed the Koler Android ransomware Trojan, at the very first time, in May when the Trojan was distributed through certain pornographic websites under the guise of legitimate apps. It locks the victim’s mobile screen and then demands money from users with fake notifications from law enforcement agencies accusing users of viewing and storing child pornography.

ANDROID SMS WORM
Recently, researchers from mobile security firm AdaptiveMobile has discovered a new variant of the rare piece of mobile malware – named Worm.Koler – that allows the malware to spread via text message spam and attempts to trick users into opening a shortened bit.ly URL, turning Koler into an SMS worm.

Once the device is infected by the Koler variant, it will first send an SMS message to all contacts in the device's address book with a text stating, "Someone made a profile named -[the contact's name]- and he uploaded some of your photos! is that you?" followed by a Bitly link, according to the security firm.

When a victim clicks on the Bitly link, he or she is then redirected to a Dropbox page with a download link for a 'PhotoViewer' app that, if installed, will push a ransom screen to pop up incessantly on the users' screen. The ransom message reads that the device has been locked up because of having illicit content and users must pay $300 via MoneyPak to 'wave the accusations.'
"The device appears to be completely locked down with the screen on the phone blocked, so the user won't be able to close the window, or deactivate the malware through the app manager," reads the blog post. "The victim is forced to buy a voucher as instructed on the blocking page, and send the voucher code to a malware author."
INFECTION SPREADING RAPIDLY
The Worm.Koler is capable of displaying localized ransomware messages to users from at least 30 countries, including the U.S., where three quarters of the latest Koler variant infections were seen by the firm, and smaller number of infections were also being detected in parts of the Middle East.
"Due to the Worm.Koler's SMS distribution mechanism, we are seeing a rapid spread of infected devices since the 19th of October, which we believe to be the original outbreak date," the blog post states. "During this short period, we have detected several hundred phones that exhibit signs of infection, across multiple US carriers. In addition to this, other mobile operators worldwide—predominantly in the Middle East, have been affected by this malware."
HOW TO PROTECT YOURSELF
If users suspect they are infected by the malware, they should never authorize any payment as it won't guarantee the unlocking of your device, as well as it will further encourage cyber criminals to carry out such ransomware practices again and again.

Koler does not encrypt files, according to the security firm, therefore it becomes easy for users to eliminate the threat from their infected devices by following two simple steps:
  • Reboot your phone in the "Safe Mode"
  • Remove the 'PhotoViewer' app using standard Android app uninstallation tool
In order to protect yourself from such threats in future, the best practice is to have the "Unknown Sources" option turned off in your Android device' security settings menu. Turning off of this option won't let users to install applications from unknown sources, but only from the official Google Play store.

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Monday, 6 October 2014

Malware Turning USB into undetectable Cyber Weapons






BadUSB Malware Code Released — Turn USB Drives Into Undetectable CyberWeapons

Once again USB has come up as a major threat to a vast number of users who use USB drives – including USB sticks and keyboards. Security researchers have released a bunch of hacking tools that can be used to convert USB drive into silent malware installer.

This vulnerability has come about to be known as "BadUSB", whose source code has been published by the researchers on the open source code hosting website Github, demanding manufacturers either to beef up protections for USB flash drive firmware and fix the problem or leave hundreds of millions of users vulnerable to the attack.

The code released by researchers Adam Caudill and Brandon Wilson has capability to spread itself by hiding in the firmware meant to control the ways in which USB devices connect to computers. The hack utilizes the security flaw in the USB that allows an attacker to insert malicious code into their firmware.

But Wait! What this means is that this critical vulnerability is now available online for hackers, cyber criminals and everybody to use so as to infect as many computers as they want.

SOURCE CODE AVAILABLE ONLINE TO EVERYBODY
In a talk at the Derbycon Hacker Conference in Louisville last week, the duo were able to reverse engineer the USB firmware, infect it with their own code, and essentially hijack the associated device. The researchers also underlined the danger of the Bad USB hack by going in-depth of the code.

The security hole was first revealed by researchers from Berlin-based Security Research Labs (SRLabs in Germany) at the Black Hat security conference in Las Vegas two months ago, and here you can watch the video of their presentation. The German researchers didn’t publish their source code because they thought it to be dangerous and too hard to patch.
We really hope that releasing this will push device manufactures to insist on signed firmware updates, and that Phison will add support for signed updates to all of the controllers it sells,” Caudill said in a blog post. “Phison isn’t the only player here, though they are the most common—I’d love to see them take the lead in improving security for these devices.
THE GOOD NEWS AND THE BAD
The good news is that this vulnerability presents in only one USB manufacturer Phison electronics, a Taiwanese electronics company. But the bad side of it is that Phison USB sticks can infect any given device they are plugged into, and the company has not yet revealed who it manufactures USB sticks for. This is the fact it is still unclear as to how widespread the problem may be at the moment.

A Phison USB stick can infect any type of computer, but it isn’t clear if its able to infect any other USB device that is plugged into them afterwards or not. However, Phison controllers are found in a very large number of USB thumb drives available on the market.



Bad USB VULNERABILITY IS UNPATCHABLE
The flaw in USB basically modifies the firmware of USB devices, which can easily be done from inside the operating system, and hides the malware in USB devices in a way that it become almost impossible to detect it. The flaw goes worst when complete formatting or deleting the contents of a USB device wouldn't vanish the malicious code, since its embedded in the firmware.

According to Wired, the vulnerability is "practically unpatchable" because it exploits "the very way that USB is designed." Once infected, each USB device will infect anything it's connected to, or any new USB stick coming into it.

IMPACT OF BadUSB ATTACK
Once compromised, the USB devices can reportedly:
  • enter keystrokes
  • alter files
  • affect Internet activity
  • infect other systems, as well, and then spread to additional USB devices
  • spoofs a network card and change the computer’s DNS setting to redirect traffic
  • emulates a keyboard and issue commands on behalf of the logged-in user, for example to exfiltrate files or install malware
During their Derbycon demonstration, the two researchers replicated the emulated keyboard attack, but also showed how to create a hidden partition on thumb drives to defeat forensic tools and how to bypass the password for protected partitions on some USB drives that provide such a feature.

MANUFACTURER DENIES THE PROBLEM
Security researchers tried to contact Phison electronics, the manufacturer of the vulnerable USB devices, but the company "repeatedly denied that the attack was possible."

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