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A new Golang-based botnet dubbed  HinataBot  has been observed to leverage known flaws to compromise routers and servers and use them to stage distributed denial-of-service (DDoS) attacks. "The malware binaries appear to have been named by the malware author after a character from the popular anime series, Naruto, with file name structures such as 'Hinata-<OS>-<Architecture>,'" Akamai  said  in a technical report. Among the methods used to distribute the malware are the exploitation of exposed Hadoop YARN servers and security flaws in Realtek SDK devices ( CVE-2014-8361 )and Huawei HG532 routers ( CVE-2017-17215 , CVSS score: 8.8). Unpatched vulnerabilities and weak credentials have been a low-hanging fruit for attackers, representing an easy, well-documented entry point that does not require sophisticated social engineering tactics or other methods. The threat actors behind HinataBot are said to have been active since at least December 2022, with the

A new Golang-based malware dubbed  GoBruteforcer  has been found targeting web servers running phpMyAdmin, MySQL, FTP, and Postgres to corral the devices into a botnet. "GoBruteforcer chose a Classless Inter-Domain Routing ( CIDR ) block for scanning the network during the attack, and it targeted all IP addresses within that CIDR range," Palo Alto Networks Unit 42 researchers  said . "The threat actor chose CIDR block scanning as a way to get access to a wide range of target hosts on different IPs within a network instead of using a single IP address as a target." GoBruteforcer is mainly designed to single out Unix-like platforms running x86, x64 and ARM architectures, with  the malware attempting to obtain access via a brute-force attack using a list of credentials hard-coded into the binary. If the attack proves to be successful, an internet relay chat ( IRC ) bot is deployed on the victim server to establish communications with an actor-controlled server.

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An updated version of a botnet malware called  Prometei  has infected more than 10,000 systems worldwide since November 2022. The infections are both geographically indiscriminate and opportunistic, with a majority of the victims reported in Brazil, Indonesia, and Turkey. Prometei, first observed in 2016, is a modular botnet that features a large repertoire of components and several proliferation methods, some of which also include the  exploitation  of ProxyLogon Microsoft Exchange Server flaws. It's also notable for avoiding striking Russia, suggesting that the threat actors behind the operation are likely based in the country. The cross-platform botnet's motivations are financial, primarily leveraging its pool of infected hosts to mine cryptocurrency and harvest credentials. The latest variant of Prometei (called v3) improves upon its existing features to challenge forensic analysis and further burrow its access on victim machines, Cisco Talos  said  in a report share

A sophisticated botnet known as MyloBot has compromised thousands of systems, with most of them located in India, the U.S., Indonesia, and Iran. That's according to new findings from BitSight, which  said  it's "currently seeing more than 50,000 unique infected systems every day," down from a high of 250,000 unique hosts in 2020. Furthermore, an analysis of MyloBot's infrastructure has found connections to a residential proxy service called BHProxies, indicating that the compromised machines are being used by the latter. MyloBot, which emerged on the threat landscape in 2017, was  first documented  by Deep Instinct in 2018, calling out its anti-analysis techniques and its ability to function as a downloader. "What makes MyloBot dangerous is its ability to download and execute any type of payload after it infects a host," Lumen's Black Lotus Labs  said  in November 2018. "This means at any time it could download any other type of malware th

At least 1,200 Redis database servers worldwide have been corralled into a botnet using an "elusive and severe threat" dubbed HeadCrab since early September 2021. "This advanced threat actor utilizes a state-of-the-art, custom-made malware that is undetectable by agentless and traditional anti-virus solutions to compromise a large number of Redis servers," Aqua security researcher Asaf Eitani  said  in a Wednesday report. A significant concentration of infections has been recorded in China, Malaysia, India, Germany, the U.K., and the U.S. to date. The origins of the threat actor are presently unknown. The findings come two months after the cloud security firm shed light on a Go-based malware codenamed  Redigo  that has been found compromising Redis servers. The attack is designed to target Redis servers that are exposed to the internet, followed by issuing a  SLAVEOF command  from another Redis server that's already under the adversary's control. In

The  Zerobot  DDoS botnet has received substantial updates that expand on its ability to target more internet-connected devices and scale its network. Microsoft Threat Intelligence Center (MSTIC) is tracking the ongoing threat under the moniker DEV-1061, its designation for unknown, emerging, or developing activity clusters. Zerobot,  first documented  by Fortinet FortiGuard Labs earlier this month, is a Go-based malware that propagates through vulnerabilities in web applications and IoT devices like firewalls, routers, and cameras. "The most recent distribution of Zerobot includes additional capabilities, such as exploiting vulnerabilities in Apache and Apache Spark ( CVE-2021-42013  and  CVE-2022-33891  respectively), and new DDoS attack capabilities," Microsoft researchers  said . Also called ZeroStresser by its operators, the malware is offered as a DDoS-for-hire service to other criminal actors, with the botnet advertised for sale on various social media networks.

An ongoing analysis of the  KmsdBot  botnet has raised the possibility that it's a DDoS-for-hire service offered to other threat actors. This is based on the different industries and geographies that were attacked, web infrastructure company Akamai said. Among the notable targets included  FiveM  and  RedM , which are game modifications for Grand Theft Auto V and Red Dead Redemption 2, as well as luxury brands and security firms. KmsdBot is a  Go-based malware  that leverages SSH to infect systems and carry out activities like cryptocurrency mining and launch commands using TCP and UDP to mount distributed denial-of-service (DDoS) attacks. However, a lack of an error-checking mechanism in the malware source code caused the criminal operators to inadvertently  crash their own botnet  last month. "Based on observed IPs and domains, the majority of the victims are located in Asia, North America, and Europe," Akamai researchers Larry W. Cashdollar and Allen West  said .

The operators of the Glupteba botnet resurfaced in June 2022 as part of a renewed and "upscaled" campaign, months after Google disrupted the malicious activity. The ongoing attack is suggestive of the malware's resilience in the face of takedowns, cybersecurity company Nozomi Networks said in a write-up. "In addition, there was a tenfold increase in TOR hidden services being used as C2 servers since the 2021 campaign," it  noted . The malware, which is distributed through fraudulent ads or software cracks, is also equipped to retrieve additional payloads that enable it to steal credentials, mine cryptocurrencies, and expand its reach by exploiting vulnerabilities in IoT devices from  MikroTik  and  Netgear . It's also an instance of an unusual malware that leverages blockchain as a mechanism for command-and-control (C2)  since at least 2019 , rendering its infrastructure resistant to takedown efforts as in the case of a traditional server. Specifically

A novel Go-based botnet called  Zerobot  has been observed in the wild proliferating by taking advantage of nearly two dozen security vulnerabilities in the internet of things (IoT) devices and other software. The botnet "contains several modules, including self-replication, attacks for different protocols, and self-propagation," Fortinet FortiGuard Labs researcher Cara Lin  said . "It also communicates with its command-and-control server using the WebSocket protocol." The campaign, which is said to have commenced after November 18, 2022, primarily singles out Windows and Linux operating systems to gain control of vulnerable devices. Zerobot gets its name from a propagation script that's used to retrieve the malicious payload after gaining access to a host depending on its microarchitecture implementation (e.g., "zero.arm64"). The malware is designed to target a wide range of CPU architectures such as i386, amd64, arm, arm64, mips, mips64, mips64

A previously undocumented Go-based malware is targeting Redis servers with the goal of taking control of the infected systems and likely building a botnet network. The attacks involve taking advantage of a critical security vulnerability in the open source, in-memory, key-value store that was disclosed earlier this year to deploy  Redigo , according to cloud security firm  Aqua . Tracked as CVE-2022-0543 (CVSS score: 10.0), the weakness pertains to a case of sandbox escape in the Lua scripting engine that could be leveraged to attain remote code execution. This is not the first time the flaw has come under active exploitation, what with Juniper Threat Labs uncovering attacks perpetrated by the  Muhstik botnet  in March 2022 to execute arbitrary commands. The Redigo infection chain is similar in that the adversaries scan for exposed Redis servers on port 6379 to establish initial access, following it up by downloading a shared library "exp_lin.so" from a remote server.

An ongoing analysis into an up-and-coming cryptocurrency mining botnet known as KmsdBot has led to it being accidentally taken down by the threat actors themselves. KmsdBot, as christened by the Akamai Security Intelligence Response Team (SIRT), came to light mid-November 2022 for its ability to  brute-force systems  with weak SSH credentials. The botnet strikes both Windows and Linux devices spanning a wide range of microarchitectures with the primary goal of deploying mining software and corralling the compromised hosts into a DDoS bot. Some of the major targets included gaming firms, technology companies, and luxury car manufacturers. Akamai researcher Larry W. Cashdollar, in a new update, explained how commands sent by the malware operators to carry out a DDoS attack against the bitcoin[.]com website inadvertently neutralized the malware. "Interestingly, after one single improperly formatted command, the bot stopped sending commands," Cashdollar  said . "It&#

For 6 months, the infamous Emotet botnet has shown almost no activity, and now it's distributing malicious spam. Let's dive into details and discuss all you need to know about the notorious malware to combat it. Why is everyone scared of Emotet? Emotet  is by far one of the most dangerous trojans ever created. The malware became a very destructive program as it grew in scale and sophistication. The victim can be anyone from corporate to private users exposed to spam email campaigns. The botnet distributes through phishing containing malicious Excel or Word documents. When users open these documents and enable macros, the Emotet DLL downloads and then loads into memory. It searches for email addresses and steals them for spam campaigns. Moreover, the botnet drops additional payloads, such as Cobalt Strike or other attacks that lead to ransomware. The polymorphic nature of Emotet, along with the many modules it includes, makes the malware challenging to identify. The Emotet

Microsoft on Tuesday disclosed the intrusion activity aimed at Indian power grid entities earlier this year likely involved the exploitation of security flaws in a now-discontinued web server called Boa . The tech behemoth's cybersecurity division  said  the vulnerable component poses a "supply chain risk that may affect millions of organizations and devices." The findings build on a prior report  published  by Recorded Future in April 2022, which delved into a sustained campaign orchestrated by suspected China-linked adversaries to strike critical infrastructure organizations in India. The cybersecurity firm attributed the attacks to a previously undocumented threat cluster called Threat Activity Group 38. While the Indian government described the attacks as unsuccessful "probing attempts," China denied it was behind the campaign. The connections to China stem from the use of a modular backdoor dubbed  ShadowPad , which is known to be shared among several

Google has won a lawsuit filed against two Russian nationals in connection with the operation of a botnet called Glupteba , the company  said  last week. The U.S. District Court for the Southern District of New York imposed monetary sanctions against the defendants and their U.S.-based legal counsel. The defendants have also been asked to pay Google's attorney fees. The defendants' move to press sanctions against Google was denied. The development comes nearly a year after the tech giant  took down  the malware's command-and-control infrastructure and initiated legal proceedings against Dmitry Starovikov and Alexander Filippov , who are said to have been in charge of running the illegal botnet. The defendants, along with 15 others, have also been accused of using the malware to create a hacked network of devices to mine cryptocurrencies, harvest victims' personal and financial data, and place disruptive ads. Gluteba is distinguished from its botnet counterparts b

Cybersecurity researchers have unearthed new samples of malware called RapperBot that are being used to build a botnet capable of launching Distributed Denial of Service (DDoS) attacks against game servers. "In fact, it turns out that this campaign is less like RapperBot than an older campaign that appeared in February and then mysteriously disappeared in the middle of April," Fortinet FortiGuard Labs researchers Joie Salvio and Roy Tay  said  in a Tuesday report. RapperBot, which was first  documented  by the network security firm in August 2022, is known to exclusively brute-force SSH servers configured to accept  password authentication . The nascent malware is heavily inspired by the  Mirai botnet , whose source code leaked in October 2016, leading to the rise of several variants. What's notable about the updated version of RapperBot is its ability to perform Telnet brute-force, in addition to supporting DoS attacks using the Generic Routing Encapsulation ( GRE

The threat actor behind the Fodcha distributed denial-of-service (DDoS) botnet has resurfaced with new capabilities, researchers reveal. This includes changes to its communication protocol and the ability to extort cryptocurrency payments in exchange for stopping the DDoS attack against a target, Qihoo 360's Network Security Research Lab  said  in a report published last week. Fodcha  first came to light  earlier this April, with the malware propagating through known vulnerabilities in Android and IoT devices as well as weak Telnet or SSH passwords. The cybersecurity company said that Fodcha has evolved into a large-scale botnet with over 60,000 active nodes and 40 command-and-control (C2) domains that can "easily generate more than 1 Tbps traffic." Peak activity is said to have occurred on October 11, 2022, when the malware targeted 1,396 devices in a single day. The top countries singled out by the botnet since late June 2022 comprises China, the U.S., Singapore,

The notorious  Emotet botnet  has been linked to a new wave of malspam campaigns that take advantage of password-protected archive files to drop CoinMiner and Quasar RAT on compromised systems. In an  attack chain  detected by Trustwave SpiderLabs researchers, an invoice-themed ZIP file lure was found to contain a nested self-extracting (SFX) archive, the first archive acting as a conduit to launch the second. While phishing attacks like these traditionally require persuading the target into opening the attachment, the cybersecurity company said the campaign sidesteps this hurdle by making use of a batch file to automatically supply the password to unlock the payload. The first SFX archive file further makes use of either a PDF or Excel icon to make it appear legitimate, when, in reality, it contains three components: the password-protected second SFX RAR file, the aforementioned batch script which launches the archive, and a decoy PDF or image. "The execution of the batch f

Web infrastructure and security company Cloudflare disclosed this week that it halted a 2.5 Tbps distributed denial-of-service (DDoS) attack launched by a Mirai botnet. Characterizing it as a "multi-vector attack consisting of UDP and TCP floods," researcher Omer Yoachimik said the DDoS attack targeted the Minecraft server Wynncraft in Q3 2022. "The entire 2.5 Tbps attack lasted about 2 minutes, and the peak of the 26 million rps attack [was] only 15 seconds," Yoachimik  noted . "This is the largest attack we've ever seen from the bitrate perspective." Cloudflare also pointed to a surge in multi-terabit DDoS attacks as well as longer-lasting volumetric attacks during the time period, not to mention an uptick in attacks targeting Taiwan and Japan. The disclosure comes almost 10 months after Microsoft said it thwarted a  record-breaking 3.47 Tbps DDoS attack  in November 2021 directed against an unnamed Azure customer in Asia. Other  DDoS attacks

The Emotet malware is now being leveraged by ransomware-as-a-service (RaaS) groups, including Quantum and BlackCat, after  Conti's official retirement  from the threat landscape this year. Emotet  started off as a banking trojan in 2014, but updates added to it over time have transformed the malware into a highly potent threat that's capable of downloading other payloads onto the victim's machine, which would allow the attacker to control it remotely. Although the infrastructure associated with the invasive malware loader was taken down as part of a law enforcement effort in January 2021, the Conti ransomware cartel is said to have  played an instrumental role  in its comeback late last year. "From November 2021 to Conti's dissolution in June 2022, Emotet was an exclusive Conti ransomware tool, however, the Emotet infection chain is currently attributed to Quantum and BlackCat," AdvIntel  said  in an advisory published last week. Typical attack sequences