Tag: Internet of Things

Shellbot Botnet Targets Linux, Android Devices

An IRC bot built using Pearl is targeting Internet of Things (IoT) devices and Linux servers, but can also affect Windows systems and Android devices, Trend Micro warns. Dubbed Shellbot, the malware is being distributed by a threat group called Outlaw, which recently compromised FTP servers of a Japanese art institution and a Bangladeshi government site. The hackers linked compromised servers to a high availability cluster to host an IRC bouncer and control the botnet.

The campaign Trend Micro’s security researchers investigated leveraged previously brute-forced or compromised hosts for distribution purposes. The bot was observed targeting Ubuntu and Android devices.

Read more about the Shellbot botnet on SecurityWeek.

This botnet snares your smart devices to perform DDoS attacks with a little help from Mirai

Chalubo is a new botnet which is targeting poorly-secured Internet of Things (IoT) devices and servers for the purpose of distributed denial-of-service (DDoS) attacks. Researchers from cybersecurity firm Sophos said that the botnet is becoming “increasingly prolific” and is ramping up efforts to target Internet-facing SSH servers on Linux-based systems alongside IoT products.

The main Chalubo bot is not only adopting obfuscation techniques more commonly found in Windows-based malware but is also using code from Xor.DDoS and the infamous Mirai botnet.

Read more about the rise of the Chalubo botnet on ZDNet.

AWS FreeRTOS Bugs Allow Compromise of IoT Devices

Researchers have found that a popular Internet of Things real-time operating system – FreeRTOS – is riddled with serious vulnerabilities. The bugs could allow hackers to crash connected devices in smart homes or critical infrastructure systems, leak information from the devices’ memory, and take them over. And while patches have been issued, researchers warn that it still may take time for smaller vendors to update.

Researcher Ori Karliner, with Zimperium’s zLabs team, recently analyzed some of the leading operating systems in the IoT market – including FreeRTOS, an open-source OS specifically designed for the microcontrollers that are within IoT devices. Within several versions of FreeRTOS, Karliner found 13 vulnerabilities enabling an array of attacks.

Read more about the vulnerabilities affecting FreeRTOS on Threatpost.

California’s new Internet of Things law only protects against a small portion of cyberthreats

The Golden State’s governor just signed a law barring companies from selling Internet-connected devices with preprogrammed passwords that are easy to guess or crack and leave them vulnerable to malicious hackers. Starting in 2020, all Internet of Things devices made or sold in California must come equipped with unique passwords, or a feature that requires the user to set their own unique password.

However, eliminating weak default passwords is an elementary move that only offers a basic safeguard against a sliver of digital threats.

Read more about California’s new IoT law on The Washington Post.

Sony Smart TV Bug Allows Remote Access, Root Privileges

As the number of smart TVs grows, so does the number of vulnerabilities inside of them. Security researchers recently revealed that eight Sony Bravia smart TV models are vulnerable to three separate bugs, one rated critical.

The flaws – a stack buffer overflow, a directory traversal and a command-injection bug – were found by Fortinet in March by its FortiGuard Labs team. The most serious of the vulnerabilities is the command-injection (CVE-2018-16593) bug, which could be exploited to recruit a TV into a botnet or be used as springboard for additional attacks against devices that shared the same network.

Read more about the critical Sony Smart TV bug on Threatpost.

‘Torii’ Breaks New Ground For IoT Malware

A dangerous and potentially destructive new IoT malware sample has recently surfaced that for the first time this year is not just another cheap Mirai knockoff. Researchers from security vendor Avast recently analyzed the malware and have named it Torii because the telnet attacks through which it is being propagated have been coming from Tor exit nodes.

Besides bearing little resemblance to Mirai in code, Torii is also stealthier and more persistent on compromised devices. It is designed to infect what Avast says is one of the largest sets of devices and architectures for an IoT malware strain. Devices on which Torii works include those based on x86, x64, PowerPC, MIPS, ARM, and several other architectures.

Read more about the Torii IoT botnet on DarkReading.

VPNFilter’s Arsenal Expands With Newly Discovered Modules

Researchers have discovered new modules in VPNFilter – the malware behind the widespread campaign in May that infected 75 router brands – revealing that its capabilities are much more widespread and sophisticated than previously thought.

After reverse-engineering seven additional third-stage modules, Cisco Talos researchers said that it has discovered that the malware packs additional capabilities – including network-mapping functions, a denial-of-service utility and traffic obfuscation techniques.

Read more about the newly discovered modules in VPNFilter on Threatpost.

Cybercriminals Target Kodi Media Player for Malware Distribution

The Kodi media player has emerged as a malware distribution platform for cybercriminals, recently becoming the target for a cryptomining campaign that compromised about 5,000 machines before being thwarted. Those victims are still at risk, researchers warned.

Kodi is free and open-source, and can be used to play videos, music and other digital media files from local and network storage media and the internet / streaming sources. Users can extend the software’s functionality by installing add-ons. By targeting the various add-ons and relying on Kodi’s auto-update feature, it’s possible to stealthily spread bad code throughout the ecosystem.

Read more about how Kodi is used to distribute malware on Threatpost.

IoT Threats Triple Since 2017

In the first half of 2018, more than 120,000 modifications in malware attacked Internet of Things (IoT) devices — triple the total in 2017 and more than 10 times for 2016, according to a new report by researchers at Kaspersky Labs.

The report shows that simple, brute-force attacks on passwords were still the most commonly used techniques to breach IoT security, making up at least part of 93% of the attacks seen. Those attacks compromised a wide variety of devices, which were then used for malicious cryptocurrency mining, DDoS attacks, the inclusion of devices in botnet threats, and more.

Read more about the findings of the new report on DarkReading.


Five key security tips to avoid an IoT hack

Recently, Russian PIR Bank lost $1,000,000 because of a compromised router that allowed hackers to gain entry into their local network. Why did it happen and how companies can protect themselves?

Malicious IoT hacking incidents are a norm today. That is not surprising, considering that by 2020, the IoT is expected to reach a staggering amount of 20.4 Bn devices. Homes and enterprises using legacy security measures are in danger because of the ever-growing IoT.

Read more about IoT hacking and learn how you can stay safe, on Help Net Security.