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Managing malware

PRACTICAL STEPS TO BETTER PROTECT AGAINST THE IMPACT OF MALEVOLENT CYBER ATTACKS

OVERVIEW

The number and frequency of vulnerabilities to raise cybersecurity concerns continues to grow. On average, organizations suffer two to three focused security breaches each month—attacks they admit could take months, or even years, to detect. In some instances, such breaches could be impossible to detect. Accenture Security is monitoring existing and potential threats and offers deep experience to help organizations build resilience from the inside out. Find out more about the latest threats.

MELTDOWN/SPECTRE SECURITY ALERT

WHAT’S THE STORY?

On January 3, 2018, various media reports announced that researchers had discovered two major flaws in microprocessor design which leave the world’s laptops, desktops, servers, smartphones, other mobile devices and cloud services vulnerable to attack. Considering the nature of the vulnerabilities, it is highly unlikely that organizations will be able to detect whether a system has been successfully attacked.

Meltdown is a vulnerability affecting main microprocessor manufacturers with Advanced Micro Devices (AMD) currently being reported as unaffected. Part of the reason that this vulnerability exists is the race for microprocessor performance. To perform as fast as possible, a chip predicts which code it may need to run next. If this predictive assumption is wrong, the chip discards the operations it did not need. Remnants of the “speculative” code—which can include logins, passwords, personally identifiable information (PII) and encryption keys—remain in the memory cache at risk of exploitation. Meltdown enables attackers to execute software that can read this memory and capture the data. Meltdown is relatively easy to exploit, but patches are becoming available to remediate its effects. These patches can degrade processor speed by five to 30 percent according to reports—which will affect cost and performance.

Spectre is a flaw in the architecture of microprocessor design making processors from most, if not all, manufacturers vulnerable to attack. Fixing it is difficult and may rely on a new generation of redesigned microprocessors.

Of the two vulnerabilities, Spectre appears more serious, although it is harder to exploit. The repair for Spectre is challenging, will take the industry a long time to address completely, and the impact could be felt throughout a complete generation of CPU hardware.

DOWNLOAD REPORT [PDF]

WHAT DOES IT MEAN?

The information obtained from system memory can be used to conduct further attacks and expose vulnerabilities on a range of devices. Cloud services are also affected, as multiple virtual machines are often provided on a single physical machine. An attacker with a presence on a virtual machine in the cloud could theoretically use a specially crafted program to access the memory contents of other customers’ virtual machines on the same physical system. Although the performance impact is uncertain, older devices are likely to suffer most and the resultant poor performance costs may have to be absorbed by organizations. With the potential for services to be disrupted, and the difficulties of enforcing patch updates, the overall cost to businesses could be punitive.

WHAT CAN YOU DO?

Take practical steps today to protect your organization from future malware attacks that may exploit the Meltdown and Spectre vulnerabilities.

  • Prioritize patching, especially of virtual machine software

  • Test patches for performance before deploying them to production

  • Increase scrutiny of phishing e-mails that may contain attached executable files

  • Regularly review performance metrics on cloud-based servers looking for unexplained performance degradation

  • Conduct adequate performance testing, and add more resources as required to arrive at the desired performance level—applying operating system (OS) patches to mitigate the Meltdown attack may degrade performance.

  • Take a risk-based review of the unpatchable systems in your estate—given the ubiquity of microprocessors, older systems running critical functions may be most at risk.

TRITON/TRISIS MALWARE ALERT

WHAT’S THE STORY?

TRITON (also known as TRISIS or HatMan) is a new and destructive malware and framework that can alter and disrupt operations of safety instrumented systems (SIS). SIS are used across Oil and Gas, Chemicals, Utilities, and other sectors, to provide a mechanism to safely shut down an industrial process when it has encountered unsafe operating conditions.

DOWNLOAD CYBER ADVISORY ATTACK SUMMARY [PDF]

DOWNLOAD THREAT ANALYSIS TECHNICAL REPORT [PDF]

WHAT DOES IT MEAN?

SIS, like main process control systems used at industrial plants, can be susceptible to a cyber attack or malware. TRITON can replace safety-functional logic with alternative logic crafted by the attacker which could, for example, fail to engage the safety system when an unsafe condition occurs, leading to infrastructure damage and potentially even loss of life. TRITON was purposefully built to target a specific brand of SIS—Triconex, manufactured by Schneider Electric. Its acts as legitimate software that is normally used to analyze SIS data and event logs.

WHAT CAN YOU DO?

Download the report and take practical steps today to protect your organization from future malware attacks like the TRITON/TRISIS threat model:

  • Physical controls—SIS controllers, like all other critical hardware components, should be kept in locked spaces, monitored and accessible only to authorized personnel.

  • Logical access control—Only authorized and properly controlled USB sticks, writable media, and programming laptops, should be used for system access. Portable media should be verified each time before being allowed to connect to SIS.

  • Network segmentation—SIS components should reside in an isolated network.

  • Configuration and change management—Industrial Control System (ICS) governance roles, processes, and tools should be in place to facilitate the correct and authorized deployment, maintenance and verification of SIS equipment and its configuration.

  • Security monitoring and scanning—Deploy network security monitoring technology, along with ICS vendor certified scanning technology, where possible.

MONERO / WANNAMINE ALERT

WHAT’S THE STORY?

Monero is a cryptocurrency designed to keep users anonymous and known to be highly resistant to transaction analysis by law enforcement. It is rapidly becoming the cryptocurrency of choice in the cyber-criminal underground economy. Monero is also extremely popular with operators of miner malware—like WannaMine—malware that infects personal computers and uses the spare processing power to “mine” cryptocurrency—because of its low difficulty rate, compared to other cryptocurrencies of similar value.

DOWNLOAD THREAT ANALYSIS TECHNICAL REPORT [PDF]

WHAT DOES IT MEAN?

Monero is popular and easy to mine. It was initially positioned as a major competitive alternative to Bitcoin. Its popularity is actually due in large part to the demand from the criminal underground. In 2016 administrators of the now defunct criminal marketplace AlphaBay attempted to manipulate the price of Monero, encouraging mass buying of the currency. This pushed Monero into the cyber criminal mainstream. Monero’s capabilities are now being promoted as part of the suite of criminal malware available on the black market. It is also believed it is being used by state-sponsored cyber operations groups affiliated with North Korea attempting to avoid sanctions. Organizations in all industries should take note because they may have to deal with miner malware, or other types of criminal probing/hijacking attempts related to Monero. Financial Services and Government Agencies in particular may have already been affected.

WHAT CAN YOU DO?

To reduce the risks and impact of Monero miner malware on your organization, security teams should:

  • Monitor system performance of hosts with business IT network environments to detect unusual rises in CPU or GPU use—or performance degradation

  • Monitor outbound network communications to known Monero mining pools

  • Monitor for cryptocurrency wallet and mining pool addresses in host process memory via endpoint detection and response (EDR) tools

HOGFISH ALERT

WHAT’S THE STORY?

HOGFISH, more commonly known as APT10, is an espionage threat group attributed to China that has been heavily targeting Japan and Western organizations since as early as 2009.The malware used in this campaign uncovered by iDefense analysts, is the latest iteration of RedLeaves: a capable RAT that allows the threat group to perform the following actions on a compromised machine:

  • Take screenshots

  • Gather browser usernames and passwords

  • Gather extended system information

  • Send, receive, and execute commands from the C2 server

This report contains a full overview of a recent HOGFISH campaign targeting organizations in Japan, and taunting tactics used on other intelligence analysts, researchers and responders.

DOWNLOAD THREAT ANALYSIS TECHNICAL REPORT [PDF]

WHAT DOES IT MEAN?

Despite the recent high profile disclosure in the Operation Cloud Hopper by the National Cyber Security Centre (NCSC) and others, HOGFISH remains a highly active and innovative threat group. Hogfish does not shy away from targets around the world, but does have a particular interest on Japan. Stolen data and proprietary information is likely to be transformed by the threat group into actionable intelligence for the group’s sponsors.

WHAT CAN YOU DO?

To effectively mitigate against threats posed by this particular HOGFISH campaign, security teams should look for and block access to the following C2 domains and IP addresses:

  • firefoxcomt.arkouowi[.]com

  • update.arkouowi[.]com

  • friendlysupport.giize[.]com

  • algorithm.ddnsgeek[.]com

  • 149.36.63[.]65m

  • 83.136.106[.]108

For threat hunting, it is also useful to examine the content of the following folders and look out for anomalous data:

  • %temp%\AYRUNSC.exe

  • %temp%\PTL.AYM

  • %appdata%\Microsoft\Windows\Start Menu\Programs\Startup\GppiTEMms.lnk

  • %appdata%\Microsoft\Windows\Start Menu\Programs\Startup\EaahLDRej.lnk

  • %appdata%\Microsoft\Windows\Start Menu\Programs\Startup\BnorTEPkh.lnk

  • A mutex named jH10689DS, 2N6541mb, or rV6880B9.

Hashes (SHA-256):

d956e2ff1b22ccee2c5d9819128103d4c31ecefde3ce463a6dea19ecaaf418a1
5504e04083d6146a67cb0d671d8ad5885315062c9ee08a62e40e264c2d5eab91
f6449e255bc1a9d4a02391be35d0dd37def19b7e20cfcc274427a0b39cb21b7b
db7c1534dede15be08e651784d3a5d2ae41963d192b0f8776701b4b72240c38d

ELISE MALWARE ALERT

WHAT’S THE STORY?

After the first attack in 2015, a new form of the Elise malware has been identified by the iDefense team in Accenture Security. The well-known threat group called DRAGONFISH—also known as Lotus Blossom—is distributing a new form of the malware targeting organizations for espionage purposes.

DOWNLOAD THREAT ANALYSIS TECHNICAL REPORT [PDF]

WHAT DOES IT MEAN?

The threat actors associated with DRAGONFISH have previously focused their campaigns on targets in Southeast Asia, specifically those located in countries near the South China Sea. These attacks have mainly targeted high-profile government, military and political institutions, but other victims include those operating in the education and telecommunication industries. iDefense analysts have identified a campaign likely to be targeting members of—or those with affiliation or interest in—the ASEAN Defence Ministers’ Meeting (ADMM).

WHAT CAN YOU DO?

To mitigate the threat of the described campaign, security teams can consider blocking access to the C2 server 103.236.150[.]14 and, where applicable, ensure that the Microsoft Security Update KB2553204 is installed in order to patch the CVE-2017-11882 vulnerability. For threat hunting, iDefense also suggests that analysts look for the following artifacts:

  • A value named IAStorD in the autorun key
  • A file named FXSAPIDebugLogFile.tmp
  • A mutex handle named donotbotherme
  • thumbcache_1CD60.db in AppData\Local\Microsoft\Windows\Explorer\

PETYA/PETWRAP MALWARE ALERT

WHAT’S THE STORY?

Ransomware introduces malicious software onto a target computer or server to exploit one or more programmatic flaws and gain expanded access to the computer. With files “locked” with an encryption key that only the attacker possesses, the impacted user is asked to pay money—often in the digital currency bitcoin—to reinstate access to the encrypted files. Ransomware in itself is not the real risk. The risk lies in the impact to the business that is caused by a service or process that has been suddenly removed. Now, ransomware-as-a-service (RaaS) is enabling less-skilled malicious actors to employ this threat tactic, with high reward for little effort or technical knowledge.

DOWNLOAD REPORT [PDF]

WHAT DOES IT MEAN?

In the last year, we have seen high-profile cyber attacks from destructive malware as a result of people mistakenly downloading malicious files. A variant of the Petya/Petwrap malware was in evidence in June 2017 when companies’ computers in Europe, the Middle East and the United States were hit with a ransom note demanding US$300 to recover their files. Such an incident highlights not only the frequency and sophisticated of cyber threats, but also serves as a reminder of the outcomes of human error.

WHAT CAN YOU DO?

Download the report and take practical steps today to protect your organization from future malware attacks like Petya/Petwrap:

Adopt proactive prevention: Many, but not all, ransomware attacks are initiated by a disguised trustworthy entity asking for sensitive information via an electronic communication. Known as phishing, employees can be helped to recognize such scams through prevention training and awareness programs. Make it easy for your employees to report fraudulent e-mails quickly, and keep testing internally to prove the training is working.

Elevate e-mail controls: Strengthening e-mail controls can often prevent malicious e-mails from reaching employees. Maintain strong spam filters and authentication. Scan incoming and outgoing e-mails to detect threats and filter executable files. Consider a cloud-based e-mail analytics solution and revisit how you configure your e-mail.

Insulate your infrastructure: Stay one step ahead of smart attackers by removing or limiting local workstation admin rights or seeking out the right configuration combinations (virus scanners, firewalls and so on). Also, regular patches of operating systems and applications can foil known vulnerabilities—Microsoft patches related to the WannaCry threat is one of the measures that should be included as part of a normal patching cycle.

Plan for continuity: Having a strong cyber resilience plan for recovery that is regularly reviewed, updated, and tested makes it easier to avoid paying any ransom. Recovery objectives must be aligned to the critical tasks within an acceptable timeframe. Workstations and file servers should not be constantly connected to backup devices, and the backup solution should store periodic snapshots rather than regular overwrites of previous backups, so that in the event of a successful attack, backups will not be encrypted.

CRASHOVERRIDE/INDUSTROYER
MALWARE ALERT

WHAT’S THE STORY?

Security experts and market commentators alike are voicing their concerns after examination of a power outage in Ukraine’s capital, Kiev, in December 2016 identified a malware framework known as CRASHOVERRIDE or INDUSTROYER. The malware targeted Kiev’s electrical infrastructure via its Industrial Control Systems (ICS) in an unprecedented and sophisticated cyber-attack. The event has serious implications globally, and is proving to be a hacker’s paradise for more than power grids in the near future. Read the practical steps organizations can take to better protect themselves from future malware attacks like CRASHOVERRIDE/INDUSTROYER.

DOWNLOAD REPORT [PDF]

WHAT DOES IT MEAN?

Alongside the use of digital technologies for enhanced automation greatly increasing hackers’ potential attack surface, aging critical infrastructure support has not always been architected with cybersecurity top of mind. CRASHOVERRIDE/INDUSTROYER targeted circuit breakers and switches hijacking electrical systems from a distance by taking advantage of standard device-level communication protocols, making it almost completely undetectable in the power infrastructure.

CRASHOVERRIDE/INDUSTROYER could be a blueprint for a more widespread and longer-lasting attack. The potential to disrupt energy, water supplies and other critical industries using ICS for automation, in an economic context, could be highly damaging to a company, municipality or nation for a long period of time.

WHAT CAN YOU DO?

Download the report and take practical steps today to protect your organization from future malware attacks like CRASHOVERRIDE/INDUSTROYER.

  1. Assess and isolate

  2. Monitor and detect

  3. Plan and prepare

  4. Mitigate risk

WANACRYPT0R MALWARE ALERT

WHAT’S THE STORY?

In May 2017, the WanaCrypt0r/WannaCry ransomware attack saw systems infected in more than 200,000 organizations across 150 countries—in particular, the attack affected 47 National Health Service trusts in the United Kingdom resulting in cancelled operations and patient disruption.

DOWNLOAD REPORT [PDF]

WHAT DOES IT MEAN?

Ransomware, also known as cryptoware, attacks a company’s data by encrypting it until a ransom is paid—with no guarantees that the data will be decrypted once the payment has been made to the adversary. Threat intelligence and law enforcement agencies warn such attacks are accelerating in frequency and targeting more businesses with increasing ransom demands. Watch the webinar video for practical steps organizations can take to better protect themselves from future ransomware attacks like WanaCrypt0r.


WHAT CAN YOU DO?

Find out how you can protect your organization against ransomware attacks like WanaCrypt0r. Listen to the webinar (above) where our distinguished panel of security specialists discuss the latest ransomware attack for:

  1. In-depth analysis and remediation of the current WanaCrypt0r/WannaCry attack to prepare organizations for new variants

  2. Practical advice on steps organizations can take to better protect themselves from future ransomware attacks

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