www.microsoft.com
Open in
urlscan Pro
2a02:26f0:1700:1b5::356e
Public Scan
URL:
https://www.microsoft.com/en-us/security/blog/2023/06/22/iot-devices-and-linux-based-systems-targeted-by-openssh-trojan-ca...
Submission: On July 21 via api from DE — Scanned from DE
Submission: On July 21 via api from DE — Scanned from DE
Form analysis
2 forms found in the DOMName: searchForm — GET https://www.microsoft.com/en-us/security/site-search
<form class="c-search" autocomplete="off" id="searchForm" name="searchForm" role="search" action="https://www.microsoft.com/en-us/security/site-search" method="GET" data-seautosuggest=""
data-seautosuggestapi="https://www.microsoft.com/msstoreapiprod/api/autosuggest"
data-m="{"cN":"GlobalNav_Search_cont","cT":"Container","id":"c3c1c9c3c1m1r1a1","sN":3,"aN":"c1c9c3c1m1r1a1"}" aria-expanded="false"
style="overflow-x: visible;">
<div class="x-screen-reader" aria-live="assertive"></div>
<input id="cli_shellHeaderSearchInput" aria-label="Search Expanded" aria-autocomplete="list" aria-expanded="false" aria-controls="universal-header-search-auto-suggest-transparent" aria-owns="universal-header-search-auto-suggest-ul" type="search"
name="q" role="combobox" placeholder="Search Microsoft Security" data-m="{"cN":"SearchBox_nav","id":"n1c3c1c9c3c1m1r1a1","sN":1,"aN":"c3c1c9c3c1m1r1a1"}" data-toggle="tooltip"
data-placement="right" title="Search Microsoft Security" data-open="false" style="overflow-x: visible;">
<button id="search" aria-label="Search Microsoft Security" class="c-glyph" data-m="{"cN":"Search_nav","id":"n2c3c1c9c3c1m1r1a1","sN":2,"aN":"c3c1c9c3c1m1r1a1"}"
data-bi-mto="true" aria-expanded="false" style="overflow-x: visible;">
<span role="presentation" style="overflow-x: visible;">Search</span>
<span role="tooltip" class="c-uhf-tooltip c-uhf-search-tooltip" style="overflow-x: visible;">Search Microsoft Security</span>
</button>
<div class="m-auto-suggest" id="universal-header-search-auto-suggest-transparent" role="group" style="overflow-x: visible;">
<ul class="c-menu" id="universal-header-search-auto-suggest-ul" aria-label="Search Suggestions" aria-hidden="true" data-bi-dnt="true" data-bi-mto="true" data-js-auto-suggest-position="default" role="listbox" data-tel="jsll"
data-m="{"cN":"search suggestions_cont","cT":"Container","id":"c3c3c1c9c3c1m1r1a1","sN":3,"aN":"c3c1c9c3c1m1r1a1"}" style="overflow-x: visible;"></ul>
<ul class="c-menu f-auto-suggest-no-results" aria-hidden="true" data-js-auto-suggest-postion="default" data-js-auto-suggest-position="default" role="listbox" style="overflow-x: visible;">
<li class="c-menu-item" style="overflow-x: visible;"> <span tabindex="-1" style="overflow-x: visible;">No results</span></li>
</ul>
</div>
</form>
https://www.microsoft.com/en-us/security/blog/
<form role="search" id="searchform-1" action="https://www.microsoft.com/en-us/security/blog/" class="search-form" type="searchForm">
<meta itemprop="target" content="https://www.microsoft.com/en-us/security/blog/?s={s}">
<label for="searchform-1-field" class="sr-only"> Search the Microsoft security blog </label>
<div class="bg-white border border-gray-300 d-flex">
<input itemprop="query-input" class="form-control form-control-sm border-0 flex-grow-1 h-100 py-2" type="search" id="searchform-1-field" name="s" placeholder="Search the blog" value="">
<button class="btn btn-link-secondary m-0 py-1" type="submit">
<span class="sr-only">Submit</span>
<span class="svg" aria-hidden="true">
<svg fill="none" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 12 13" width="13" height="12">
<path d="M4.833.097a4.833 4.833 0 0 1 3.753 7.879l3.268 3.267a.5.5 0 0 1-.651.756l-.057-.049L7.88 8.683A4.833 4.833 0 1 1 4.833.097Zm0 1a3.833 3.833 0 1 0 0 7.666 3.833 3.833 0 0 0 0-7.666Z" fill="#4C4C51"></path>
</svg> </span>
</button>
</div>
</form>
Text Content
We use optional cookies to improve your experience on our websites, such as through social media connections, and to display personalized advertising based on your online activity. If you reject optional cookies, only cookies necessary to provide you the services will be used. You may change your selection by clicking “Manage Cookies” at the bottom of the page. Privacy Statement Third-Party Cookies Accept Reject Manage cookies Experience AI-powered browsing with the new Bing built-in Get comprehensive answers and summarized information side-by-side in Microsoft Edge No, thanks Try now Skip to main content Microsoft Microsoft Security Microsoft Security Microsoft Security * Home * Solutions * Cloud security * Cloud workload protection * Frontline workers * Identity & network access * Identity threat detection & response * Industrial & critical infrastructure * Information protection & governance * IoT security * Passwordless authentication * Phishing * Ransomware * Risk management * Secure remote work * SIEM & XDR * Small & medium business * XDR * Zero Trust * Products * Product families Product families * Microsoft Defender * Microsoft Entra * Microsoft Intune * Microsoft Priva * Microsoft Purview * Microsoft Sentinel * Security AI Security AI * Microsoft Security Copilot * Identity & access Identity & access * Azure Active Directory (Microsoft Entra ID) * Microsoft Entra External ID * Microsoft Entra ID Governance * Microsoft Entra ID Protection * Microsoft Entra Internet Access * Microsoft Entra Private Access * Microsoft Entra Permissions Management * Microsoft Entra Verified ID * Microsoft Entra Workload ID * Azure Key Vault * SIEM & XDR SIEM & XDR * Microsoft Sentinel * Microsoft Defender for Cloud * Microsoft 365 Defender * Microsoft Defender for Endpoint * Microsoft Defender for Office 365 * Microsoft Defender for Identity * Microsoft Defender for Cloud Apps * Microsoft Defender Vulnerability Management * Microsoft Defender Threat Intelligence * Cloud security Cloud security * Microsoft Defender for Cloud * Microsoft Defender Cloud Security Posture Mgmt * Microsoft Defender for DevOps * Microsoft Defender External Attack Surface Management * Azure Firewall * Azure Web App Firewall * Azure DDoS Protection * GitHub Advanced Security * Endpoint security & management Endpoint security & management * Microsoft Defender for Endpoint * Microsoft 365 Defender * Microsoft Intune core capabilities * Microsoft Intune Endpoint Privilege Management * Microsoft Intune Remote Help * Microsoft Defender for IoT * Microsoft Defender for Business * Microsoft Defender Vulnerability Management * Risk management & privacy Risk management & privacy * Microsoft Purview Insider Risk Management * Microsoft Purview Communication Compliance * Microsoft Purview eDiscovery * Microsoft Purview Compliance Manager * Microsoft Purview Audit * Microsoft Priva Risk Management * Microsoft Priva Subject Rights Requests * Information protection Information protection * Microsoft Purview Information Protection * Microsoft Purview Data Lifecycle Management * Microsoft Purview Data Loss Prevention * Services * Microsoft Security Experts * Microsoft Defender Experts for XDR * Microsoft Defender Experts for Hunting * Microsoft Incident Response * Microsoft Security Services for Modernization * Partners * Resources * Get started Get started * Cybersecurity awareness * Customer stories * Security 101 * Product trials * How we protect Microsoft * Reports and analysis Reports and analysis * Industry recognition * Microsoft Security Insider * Microsoft Digital Defense Report * Security Response Center * Community Community * Microsoft Security Blog * Microsoft Security Events * Microsoft Tech Community * Documentation and training Documentation and training * Documentation * Technical Content Library * Training & certifications * Cyberattack support Cyberattack support * Under attack? * Additional sites Additional sites * Compliance Program for Microsoft Cloud * Microsoft Trust Center * Security Engineering Portal * Service Trust Portal * Microsoft built in security * Contact Sales * More * Start free trial * All Microsoft * GLOBAL * Microsoft Security * Azure * Dynamics 365 * Microsoft 365 * Microsoft Teams * Windows 365 * Tech & innovation Tech & innovation * Microsoft Cloud * AI * Azure Space * Mixed reality * Microsoft HoloLens * Microsoft Viva * Quantum computing * Sustainability * Industries Industries * Education * Automotive * Financial services * Government * Healthcare * Manufacturing * Retail * All industries * Partners Partners * Find a partner * Become a partner * Partner Network * Find an advertising partner * Become an advertising partner * Azure Marketplace * AppSource * Resources Resources * Blog * Microsoft Advertising * Developer Center * Documentation * Events * Licensing * Microsoft Learn * Microsoft Research * View Sitemap Search Search Microsoft Security * No results Cancel 1. Blog home 2. Threat intelligence Search the Microsoft security blog Submit * Research * Threat intelligence * Microsoft Defender * IoT / OT threats 11 min read IOT DEVICES AND LINUX-BASED SYSTEMS TARGETED BY OPENSSH TROJAN CAMPAIGN * By Microsoft Threat Intelligence June 22, 2023 * * * * Microsoft Defender for Endpoint * Microsoft Defender for IoT * Microsoft Sentinel * Attacker techniques, tools, and infrastructure more Cryptojacking, the illicit use of computing resources to mine cryptocurrency, has become increasingly prevalent in recent years, with attackers building a cybercriminal economy around attack tools, infrastructure, and services to generate revenue from targeting a wide range of vulnerable systems, including Internet of Things (IoT) devices. Microsoft researchers have recently discovered an attack leveraging custom and open-source tools to target internet-facing Linux-based systems and IoT devices. The attack uses a patched version of OpenSSH to take control of impacted devices and install cryptomining malware. Utilizing an established criminal infrastructure that has incorporated the use of a Southeast Asian financial institution’s subdomain as a command and control (C2) server, the threat actors behind the attack use a backdoor that deploys a wide array of tools and components such as rootkits and an IRC bot to steal device resources for mining operations. The backdoor also installs a patched version of OpenSSH on affected devices, allowing threat actors to hijack SSH credentials, move laterally within the network, and conceal malicious SSH connections. The complexity and scope of this attack are indicative of the efforts attackers make to evade detection. In this blog post, we present our analysis of the tools and techniques used in this attack and the efforts made by the threat actor to evade detection on affected devices. We also provide indicators of compromise and relevant Microsoft Defender for IoT and Microsoft Defender for Endpoint detections, as well as recommendations for defenders to protect devices and networks. ATTACK CHAIN The threat actors initiate the attack by attempting to brute force various credentials on misconfigured internet-facing Linux devices. Upon compromising a target device, they disable shell history and retrieve a compromised OpenSSH archive named openssh-8.0p1.tgz from a remote server. The archive contains benign OpenSSH source code alongside several malicious files: the shell script inst.sh, backdoor binaries for multiple architectures (x86-64, arm4l, arm5l, i568, and i686), and an archive containing the shell script vars.sh, which holds embedded files for the backdoor’s operation. After installing the payload, the shell script inst.sh runs a backdoor binary that matches the target device’s architecture. The backdoor is a shell script compiled using an open-source project called Shell Script Compiler (shc), and enables the threat actors to perform subsequent malicious activities and deploy additional tools on affected systems. Figure 1. OpenSSH trojan attack chain. CUSTOM BACKDOOR DEPLOYS OPEN-SOURCE ROOTKITS Once running on a device, the shell script backdoor tests access to /proc to determine whether the device is a honeypot. If it can’t access /proc, it determines the device is a honeypot and exits. Otherwise, it exfiltrates information about the device, including its operating system version, network configuration, and the contents of /etc/passwd and /etc/shadow over email to the hardcoded address dotsysadmin[@]protonmail[.]com, and to any email address provided by the threat actor as an argument to the script. On supported systems, the backdoor downloads, compiles, and installs two open-source rootkits available on GitHub, Diamorphine and Reptile. The backdoor configures Reptile to connect to the C2 domain rsh.sys-stat[.]download on port 4444 and to hide its child processes, files, or their content. Microsoft researchers assess that the Diamorphine rootkit is used to hide processes as well. Figure 2. Any content in a file that appears between __R_TAG, which is defined as “ubiqsys”, will be hidden. To ensure persistent SSH access to the device, the backdoor appends two public keys to the authorized_keys configuration files of all users on the system. Figure 3. Adding SSH keys to all users to preserve SSH access. The backdoor obscures its activity by removing records from Apache, nginx, httpd, and system logs that contain the IP and username specified as arguments to the script. Additionally, it has the capability to install an open-source utility called logtamper to clear the utmp and wtmp logs, which record information about user sign-in sessions and system events. The backdoor eliminates cryptomining competition from other miners that may exist on the device by monopolizing device resources and preventing communication with a hardcoded list of hosts and IPs related to these activities. It accomplishes this by adding iptables rules to drop communication with the hosts and IPs and configuring /etc/hosts to make the hosts resolve to the localhost address. It also identifies miner processes and files by their names and either terminates them or blocks access to them, and removes SSH access configured in authorized_keys by other adversaries. PATCHING OPENSSH SOURCE CODE The backdoor uses the Linux patch utility to apply the patch file ss.patch, which is embedded in vars.sh, to the OpenSSH source code files included in its package. Once the patches are applied, the backdoor compiles and installs the modified OpenSSH on the device. The compromised OpenSSH grants the attackers persistent access to the device and to the SSH credentials the device handles. The patches install hooks that intercept the passwords and keys of the device’s SSH connections, whether as a client or a server. The passwords and keys are then stored encrypted in a file on the disk. Moreover, the patches enable root login over SSH and conceal the intruder’s presence by suppressing the logging of the threat actors’ SSH sessions, which are distinguished by a special password. The modified version of OpenSSH mimics the appearance and behavior of a legitimate OpenSSH server and may thus pose a greater challenge for detection than other malicious files. The patched OpenSSH could also enable the threat actors to access and compromise additional devices. This type of attack demonstrates the techniques and persistence of adversaries who seek to infiltrate and control exposed devices. Figure 4. OpenSSH patch to save incoming SSH passwords (ss.patch) BOTNET OPERATION The backdoor runs a secondary payload embedded in the shell script vars.sh, which is a slightly modified version of ZiggyStarTux, an open-source IRC bot based on the Kaiten malware. Among its features is executing bash commands issued from the C2 and possessing distributed denial of service (DDoS) capabilities. The backdoor employs various mechanisms to set up ZiggyStarTux’s persistence on compromised systems. It copies the ZiggyStarTux binary to several locations on the disk and establishes cron jobs to invoke it at regular intervals. Moreover, it runs a bash script that registers ZiggyStarTux as a systemd service by creating and configuring the service file /etc/systemd/system/network-check.service. Figure 5. Registration of ZiggyStarTux as a systemd service Analysis of ZiggyStarTux revealed that the threat actors stripped the binary of logging-related strings and incorporated a function that writes the bot’s process ID to /var/run/sys_checker.pid, allowing the backdoor to read that file and conceal that process ID using the installed rootkits. The ZiggyStarTux bots communicate with the C2 via an IRC server hosted on various domains and IPs located in different geographical regions. Evidence indicates that the threat actors disguise their traffic by utilizing the subdomain of a Southeast Asian financial institution that is hosted on one of their own servers. To receive commands, the ZiggyStarTux bots connect to the IRC server and join a hidden password-protected channel named ##..##. The server was observed issuing bash commands that instruct bots to download and launch two shell scripts from a remote server. The first script, lscan, retrieves lssh.tgz from the server, an archive of scripts that scan each IP in the subnet for SSH access using a password list. The scripts record the results of each connection attempt in a log file. The second script, zaz, fetches the compromised OpenSSH package with the embedded backdoor from the remote server. The installation is carried out using the email address ancientgh0st@yahoo[.]com as an argument to serve as an additional exfiltration point for device information. Additionally, zaz retrieves an archive called hive-start.tgz which contains mining malware crafted for Hiveon OS systems, a Linux-based open-source operating system designed for cryptomining. INDICATIONS OF CRIMINAL COOPERATION Microsoft researchers have traced the campaign to a user named asterzeu on the hacking forum cardingforum[.]cx, who offered multiple tools for sale on the platform, including an SSH backdoor. The domain madagent[.]tm was registered in 2015 with an email address matching the username and shared numerous servers over a four-year period with madagent[.]cc, one of the C2 domains of ZiggyStarTux. Furthermore, the distribution of the shell script backdoor between threat actors has been identified, adding to the evidence of a network of tools and infrastructure shared or sold on the malware-as-a-service market. Figure 6. Post on hacking forum where malicious tools are being sold by the user “asterzeu” MITIGATION AND PROTECTION GUIDANCE Microsoft recommends the following steps to protect devices and networks against this threat: * Harden internet-facing devices against attacks * Ensure secure configurations for devices: Change the default password to a strong one, and block SSH from external access. * Maintain device health with updates: Make sure devices are up to date with the latest firmware and patches. * Use least-privileges access: Use a secure virtual private network (VPN) service for remote access and restrict remote access to the device. * When possible, update OpenSSH to the latest version. * Adopt a comprehensive IoT security solution such as Microsoft Defender for IoT to allow visibility and monitoring of all IoT and OT devices, threat detection and response, and integration with SIEM/SOAR and XDR platforms such as Microsoft Sentinel and Microsoft 365 Defender. * Use security solutions with cross-domain visibility and detection capabilities like Microsoft 365 Defender, which provides integrated defense across endpoints, identities, email, applications, and data. DETECTIONS MICROSOFT DEFENDER FOR IOT Microsoft Defender for IoT uses detection rules and signatures to identify malicious behavior. Microsoft Defender for IoT has alerts for the use of open-source tools and exploits that may be tied to this attack. MICROSOFT DEFENDER ANTIVIRUS Microsoft Defender Antivirus detects this threat as the following malware: * Trojan:Linux/SamDust!MTB * Trojan:Linux/SamDust.D!MTB * Trojan:Linux/SamDust.B!MTB * Trojan:Linux/SamDust.A!MTB * Trojan:Linux/SamDust.N!MTB * Trojan:Linux/Reptile.A * Trojan:Linux/Reptile.B * Trojan:Linux/Reptile.C * Trojan:Linux/Reptile.D * Trojan:Linux/Diamorphine.A!MTB MICROSOFT DEFENDER FOR ENDPOINT The following Microsoft Defender for Endpoint alerts can indicate associated threat activity: * Unusual number of failed sign-in attempts The following alerts might also indicate threat activity related to this threat. Note, however, that these alerts can be also triggered by unrelated threat activity. * Suspicious file property modification occurred * Suspicious termination of security tool * Suspicious service launched * Suspicious Linux service created * File masquerading HUNTING QUERIES MICROSOFT SENTINEL Microsoft Sentinel customers can use the TI Mapping analytics (a series of analytics all prefixed with ‘TI map’) to automatically match the malicious domain indicators mentioned in this blog post with data in their workspace. If the TI Map analytics are not currently deployed, customers can install the Threat Intelligence solution from the Microsoft Sentinel Content Hub to have the analytics rule deployed in their Sentinel workspace. More details on the Content Hub can be found here: https://learn.microsoft.com/azure/sentinel/sentinel-solutions-deploy. In addition, customers can use the SSH Brute force detection template in the Syslog solution package to monitor for brute force attempts against their exposed SSH endpoints. INDICATORS OF COMPROMISE IndicatorTypeasterzeu[@]yahoo[.]comEmail addressdotsysadmin[@]protonmail[.]comEmail address185.161.208[.]234C2139.180.185[.]24C2199.247.30[.]230C2149.28.239[.]146C2209.250.234[.]77C270.34.220[.]100C2irc[.]socialfreedom[.]partyC2singapore[.]sg[.]socialfreedom[.]partyC2amsterdam[.]nl[.]socialfreedom[.]partyC2frankfurt[.]de[.]socialfreedom[.]partyC2sidney[.]au[.]socialfreedom[.]partyC2losangeles[.]us[.]socialfreedom[.]partyC2mumbaitravelers[.]orgC2sh[.]madagent[.]tmC2ssh[.]madagent[.]tmC2dumpx[.]madagent[.]tmC2reg[.]madagent[.]tmC2sshm[.]madagent[.]tmC2z[.]madagent[.]tmC2ssho[.]madagent[.]tmC2sshr[.]madagent[.]tmC2sshu[.]madagent[.]tmC2user[.]madagent[.]tmC2madagent[.]ccC2cler[.]madagent[.]ccC2dumpx[.]madagent[.]ccC2mh[.]madagent[.]ccC2ns1[.]madagent[.]ccC2ns2[.]madagent[.]ccC2ns3[.]madagent[.]ccC2ns4[.]madagent[.]ccC2reg[.]madagent[.]ccC2ssh[.]madagent[.]ccC2sshm[.]madagent[.]ccC2ssho[.]madagent[.]ccC2sshr[.]madagent[.]ccC2sshu[.]madagent[.]ccC2user[.]madagent[.]ccC2www[.]madagent[.]ccC2rsh[.]sys-stat[.]downloadC2sh[.]sys-stat[.]downloadC2sh[.]rawdot[.]netC2ssho[.]rawdot[.]netC2donate[.]xmr[.]rawdot[.]netC2pool[.]rawdot[.]netC22018[.]rawdot[.]netC2blog[.]rawdot[.]netC2clients[.]rawdot[.]netC2ftp[.]rawdot[.]netC2psql01[.]rawdot[.]netC2www[.]rawdot[.]netC2sh[.]0xbadc0de[.]streamC2ss[.]0xbadc0de[.]streamC2a26631dcc1aef92a92d2d37476fb1e9becae54541e0411224a441d3afc20b02aScript to launch ZiggyStarTux6e9b692b401a57db306bd6c95409042aa6ed075088a40a6ceb74f96895116b62ZiggyStarTux5e11731e570fc79ad07da4f137e103e0ebfa45530fabd8fa9a9fece4e497bce0ZiggyStarTux22c2115becd1d0ff9dfe70d14a52ab0354e420f4bfe0df70ca0d55d3c557c6b3ZiggyStarTuxd335c83c0dd5bc9a078e796016f9a9f845ff89ee434c63c7a2e7b360e8be3e95ZiggyStarTux336928c813f3c0ab9aaad5a9853ed96b3f82e7b2b6d96139a7ebb146337dd248ZiggyStarTux1f6a52ce5ee017f88bd5f9028e3741e69837437cc48444d31d50ef28f1ed03f4ZiggyStarTuxb72f21077f9f4d85d555cc6c18677e285b61f980ca99d0495d52f0cbbe66517aMalicious OpenSSH8e7c6cbbb17ffe5ea98986dd36c3e979bc348626637ff9bfd55cb08414f3494cMalicious OpenSSH39b640f62c0046139c41bccd0f98f96165597d50c4823ed88154160c0cae6bd1Malicious OpenSSHb77f991a9e0533a7bb39480ba7e96c29a1c1c9e2e212497cfbf6221751a196a2Malicious OpenSSH1782930bc2d46da541c980c09b13811f504b743e485a2befb0df1e5865a95847Malicious OpenSSH7ea1db1581afb977ec6d4abadf98660526205f23c366f7ba6aa04061762b5a7eMalicious OpenSSH4b23d2126a6aec79396630dc10bdf279d9dafc71358145ab0b726cdf0a90dedfMalicious OpenSSH081ad11e67af3fd98cb34cae89a5d26699f132a7ada62b1409eb85eaa4431437Malicious OpenSSH8ff06c7f0c105301397d15b1be3f6fe3ba081bbe042136c5b0fa4478ab59650dBackdoor28616594b320b492c04429ab2f569d22d56bd9a047903f214d8b0eacab9b9c14Backdoore22148ae0cb1a5cc7743351909cd0ae99ba6a84e181dded1cfa9fa0ed9e4f0e2Backdoor6101fcda212f2ee2340e85eaac071ffa95507166ba253d555a69c9ab6c16b148Backdoor52fb0dcd929d57e32c8383873897963dd671b626d7e31dd98d2b092a9b57be43Backdoor78701d6cafb3e477a033d63b99d480c2d7647079133ecabdcb54cd7a520e46deBackdoor2eb5a4766dd7b90674f16eea62ba4e9c33dac8023e1692ed67c917bca448d14fBackdoorc775964fe1207b6a6f9faf818c63874b2bf5612581e3c3b2d9f6eeee969229d8Backdoor75385bb1548c567c4814ad5c13fde6bf64e47694c244e1c26e903abc4523c667Backdoorbc1e444ab92bb40e41e08846f3e485ffa17ab98563f2ed2129ef1b02c3d5a878Backdoor8cb1df542bc60eb187066c136ae413540b33dd28c856ee472dd073affb96a84bBackdoor55448d04183a253c939a6463c8992cbc007be237c80de92ff31e3f6606ebd470Backdoor9967921339799ed6f510c8a567f8bd69129d75d113f5c63612ceef0d5c4bf019Backdoor0a565ebae65fb5fbb34801c2948d35a0b7b5762a9ce51bd55a43181f46bc9723Backdoorfdfed7c2bf55d0f2440f623e265ab8b8006987f94d23982688914feffb3c549eBackdoor32aa3e5fd9b79dcfd9ebe590b6784527cb17217cdeb61a1791bd4a5f721f0099vars.sh archive30d456d6dbd492923972d5f3ceb72c0f7e80d1f6391d6f9c0f5e889b6f71be66vars.sh archive74f4b030529435a8872c3e10d3341a1988d4fdbba89d9afd876458980f6f7a49vars.sh archive3033bb18554ce62f2f96338af682efb647c98d126734bb20426da8ec49ec1cddDecode utility used by the backdoor58b9622960e1bb189a403da6cd73e6ec2cb446680a18092351e5a9fa1a205cbcss.patch0027edb4a3c33f3d0cb5cc6fc85b58a8f7c70b8e57a2d28bed53f11c5f649848inst.sh7ca66932d9015bf14b89b8650408e39a65c96f59f9273feaede28cabca8a3bbchive-start.tgz9564172445e66f0d3cb64c42f2298f14093c342b95b023bcb82408b6f2a66cd3lssh.tgz722b1970caa804154d85fb3dba88cf192bf3eedd2fea40c8c49c98130797649dFile from lssh.tgz85877eb8f60c903ccb256e776c3e077295cf10eccff8d8ce4400edc699e8021fFile from lssh.tgz635b3dfadeab6b3c2574b1689607b776518d42c2b9fdb895e25c04a8ae9dee92File from lssh.tgz3ba302f533fcf065fe3f80b4bbea4653e86a5a8c1c752e4798a64a6be3d06e5dFile from lssh.tgzb8a360e7094e27857c7daacf624f2d9916e002201caf8a88c5aa3bd37f7bc264File from lssh.tgz Rotem Sde-Or, Microsoft Threat Intelligence Community FURTHER READING For the latest security research from the Microsoft Threat Intelligence community, check out the Microsoft Threat Intelligence Blog: https://aka.ms/threatintelblog. To get notified about new publications and to join discussions on social media, follow us on Twitter at https://twitter.com/MsftSecIntel. RELATED POSTS * * Research * Threat intelligence * IoT / OT threats Published Dec 21 12 min read MICROSOFT RESEARCH UNCOVERS NEW ZEROBOT CAPABILITIES The Microsoft Defender for IoT research team details information on the recent distribution of a Go-based botnet, known as Zerobot, that spreads primarily through IoT and web-application vulnerabilities. * * Research * Threat intelligence * Microsoft Defender * IoT / OT threats Published Dec 15 9 min read MCCRASH: CROSS-PLATFORM DDOS BOTNET TARGETS PRIVATE MINECRAFT SERVERS The Microsoft Defender for IoT research team analyzed a cross-platform botnet that infects both Windows and Linux systems from PCs to IoT devices, to launch distributed denial of service (DDoS) attacks against private Minecraft servers. * * Research * Threat intelligence * Microsoft Defender * Supply chain attacks Published Nov 22 6 min read VULNERABLE SDK COMPONENTS LEAD TO SUPPLY CHAIN RISKS IN IOT AND OT ENVIRONMENTS As vulnerabilities in network components, architecture files, and developer tools have become an increasingly popular attack vector to leverage access into secure networks and devices, Microsoft identified such a vulnerable component and found evidence of a supply chain risk that might affect millions of organizations and devices. * * Research * Threat intelligence * Microsoft Defender * IoT / OT threats Published Oct 21 4 min read SECURING IOT DEVICES AGAINST ATTACKS THAT TARGET CRITICAL INFRASTRUCTURE South Staffordshire PLC, a company that supplies water to over one million customers in the United Kingdom, notified its customers in August of being a target of a criminal cyberattack. This incident highlights the sophisticated threats that critical industries face today. According to South Staffordshire, the breach did not appear to have caused damage to […] GET STARTED WITH MICROSOFT SECURITY Microsoft is a leader in cybersecurity, and we embrace our responsibility to make the world a safer place. Learn more CONNECT WITH US ON SOCIAL * * * What's new * Surface Pro 9 * Surface Laptop 5 * Surface Studio 2+ * Surface Laptop Go 2 * Surface Laptop Studio * Surface Go 3 * Microsoft 365 * Windows 11 apps Microsoft Store * Account profile * Download Center * Microsoft Store support * Returns * Order tracking * Trade-in for Cash * Microsoft Store Promise * Flexible Payments Education * Microsoft in education * Devices for education * Microsoft Teams for Education * Microsoft 365 Education * How to buy for your school * Educator training and development * Deals for students and parents * Azure for students Business * Microsoft Cloud * Microsoft Security * Dynamics 365 * Microsoft 365 * Microsoft Power Platform * Microsoft Teams * Microsoft Industry * Small Business Developer & IT * Azure * Developer Center * Documentation * Microsoft Learn * Microsoft Tech Community * Azure Marketplace * AppSource * Visual Studio Company * Careers * About Microsoft * Company news * Privacy at Microsoft * Investors * Diversity and inclusion * Accessibility * Sustainability English (United States) California Consumer Privacy Act (CCPA) Opt-Out Icon Your Privacy Choices California Consumer Privacy Act (CCPA) Opt-Out Icon Your Privacy Choices * Sitemap * Contact Microsoft * Privacy * Manage cookies * Terms of use * Trademarks * Safety & eco * Recycling * About our ads * © Microsoft 2023 Notifications