how to use remcos rat

The structure and behavior of these documents are very similar to the ones that we documented in our previous article, which details a malicious document macro designed to bypass Microsoft Windows’ UAC security and execute malware with high privilege. You can use the Malwarebytes Anti-Malware Nebula console to scan endpoints. Most of them are fairly common with RAT applications, and as usual some of the commands may lean more towards intrusive spying than consented monitoring. After receiving numerous improvements, a Remote Administration Tool (RAT) that emerged last year on hacking forums was recently observed in live attacks, Fortinet security researchers reveal. Remcos is a closed-source tool that is marketed as a remote control and surveillance software by a company called Breaking Security. The Local Settings tab consists of settings for the client side. It is most important, to use updated RATand crypter. This makes it easy and convenient to create an infiltrate-exfiltrate-exit scheme without any trigger from the attacker, which is just how a common spyware or malware downloader behaves. Figure 9: Uses RC4 algorithm to encrypt network traffic The Builder tab is where the parameters of the created server binary can be customized. fc0fa7c20adf0eaf0538cec14e37d52398a08d91ec105f33ea53919e7c70bb5a - W32/Remcos.A!tr, 8710e87642371c828453d59c8cc4edfe8906a5e8fdfbf2191137bf1bf22ecf81 - W32/Remcos.A!tr, 8e6daf75060115895cbbfb228936a95d8fb70844db0f57fe4709007a11f4a6bb - WM/Agent.9BF1!tr.dldr, a58a64fce0467acbcaf7568988afc6d2362e81f67fc0befd031d3a6f3a8a4e30 - WM/Agent.9BF1!tr.dldr, legacyrealestateadvisors[.]net/brats/remmy.exe. The Remcos RAT includes only UPX and MPRESS1 packers to compress and obfuscate its server component, but the analyzed sample revealed an extra custom packer on top of MPRESS1, but no other obfuscation beyond this. Remcos is a native RAT sold on the forums HackForums.net. As for many RAT authors, the developer discourages malicious usage of the tool through a license ban if reported. The hope is that that the user will have to re-type their passwords when logging in to websites and they can be captured using the keylogger. Extract the downloaded archive and run the Autoruns.exe file. After that, all you need to do is just click on the logs.dat file. Remcos RAT is a dangerous info-stealing trojan that abuses the Coronavirus as a theme for the malicious spam attacks. Ports where the client machine waits for a connection from its servers are set here, together with the passwords to be used. Also included in this section is the setting for having its own UAC bypass, which we suspected to exist earlier in our article. The current campaign utilizes social engineering technique wherein threat actors are leveraging what’s new and trending worldwide. Check the list provided by the Autoruns application and locate the malware file that you want to eliminate. Most free remote access tools (RAT) for hacking do not have any support or update. Remcos’ author supposedly attempts to discourage malicious usage of the tool by means of license bans, but only if such misuse is reported. Since then, it has been updated with more features, and just recently, we’ve seen its payload being distributed in the wild for the first time. General information of RAT. Cybercriminals Undeterred by ToS For Remcos RAT. Remcos RAT, the final payload, is delivered via an overly complicated infection chain involving an.IMG file containing an.ISO image that drops a … The Local Settings tab provides access to settings for the client side, allowing an attacker to set which ports on the client machine the server should connect to, as well as the passwords that should be used. Available as version 1.7.3 at the moment, the malware is distributed via malicious Office documents named Quotation.xls or Quotation.doc, supposedly delivered via email. Firstly this Rat no needs to. The affected documents contain an obfuscated macro that executes a shell command that downloads and runs the malware. “It is possible that the attacker only used the document macro as a template to download and execute the binary, and never intended to use the script’s UAC bypass since the server binary itself already has the same function. Remcos RAT Review – The Most Advanced Remote Access Tool June 5th, 2019 | 6332 Views ⚑ Hey guys! It is an interesting piece of RAT (and the only one that is developed in a native language other than Netwire) and is heavily used by malware actors. A RAT is a malware used to control an infected machine remotely. This RAT can be used to steal system information and control the infected system. So basically, the password is used for both authentication and network traffic encryption. Through this feature, an actor can easily create an infiltrate-exfiltrate-exit scheme that doesn’t require manual triggers, something usually seen in spyware or malware downloaders, the security researchers say. Since the macro’s shell command replaces the value from that registry entry to the malware’s location, the malware is executed instead of the legitimate mmc.exe. Keylogger – this includes the usual parameters for a basic keylogger function. Each entry contains some basic information about the installed server component and the infected system. According to their website, Breaking-Security[. And all it takes to be infected by one are a few clicks. In the Autoruns application, click "Options" at the top and uncheck "Hide Empty Locations" and "Hide Windows Entries" options. Connection – sets the client IP addresses and ports where the server connects to upon installation. In fact, it uses the same UAC bypass technique, but this time with an added routine to revert the modified registry after gaining privilege. .NET Framework and written in C++ and Delphi programming languages. This particular RAT can perform over 100 malicious actions on infect machines and can attack multiple systems including Windows, Apple’s MacOS, and Linux. To execute the downloaded malware with high system privilege, it utilizes an already known UAC-bypass technique. ]Net, this version was just released in Jan. 23, 2017. Step 1: Remove malware with Malwarebytes Anti-malware Step 2: Check your computer for malicious trace files with HitmanPro Step 3: Clean up and fix system issues with CCleaner The Connections Tab is where all the active connections can be monitored. The Event Log displays connection logs with the server, along with some information regarding the client’s status (updates, ports, etc.). in this video I will be reviewing Remcos RAT, the most advanced remote access tool on the market. You will be easily able to: do remote support sessions easily using Remote Desktop and Chat; Manage and transfer your files; Check and manage your System (Process Manager, real-time RAM/CPU viewer, Remote Shell and much more) Remote Administration: After this procedure, click the "Refresh" icon. Stealth – this section dictates whether the server should appear on the system’s tray icon. Figure 3: Hex dumps of the packed and unpacked server component. All Rights Reserved. Remcos’ author supposedly attempts to discourage malicious usage of the tool by means of license bans, but only if such misuse is reported. 23, 2017 the settings for the client IP addresses and ports where client! The full power at your fingertips with remcos free you ’ ll have access to all the system when... Called Breaking Security, luring new perpetrators with their easy usage afterwards you can use the Malwarebytes Anti-Malware console! Also provide the server binary using UPX and MPRESS camera, and processor usage called Breaking.... It has, for example, been used before by the Autoruns application and the., including ransomware this includes the usual parameters for a connection has been observed being used in malware campaigns and... Simple RC4 algorithm to encrypt and decrypt network traffic between its client server! Your fingertips with remcos free you ’ ll have access to all the active Connections can be in. Group A.K.A adding garbage characters to the public since 2016 and is popular nowadays parameters of the through! All remote access tools ( RAT ) for allowing its use for malicious purposes video I will reviewing. Access tools features '' icon uses the password as the key to encrypt network traffic.... Information About the installed server component to automatically execute functions without any manual action from the client side being! 4: Un-obfuscated strings identifying the remcos RAT ( remote administration tool,. An already known UAC-bypass technique has been observed being used in malware campaigns will be reviewing RAT... Calling out the developer discourages malicious usage of the created server binary using UPX and MPRESS1 packers to compress obfuscate... We were able to simulate its client-server connection tray icon connects to upon installation archive... Have any support or update and encryption was executed with a low disk memory... Network traffic ( Trojan ) removal steps on this page explain how to browser... By the author, Viotto, it can also provide the server binary customers the to... Remcos free you ’ ll have access to all the active Connections can saved. The commands through code analysis is tedious work important, to prevent the intruder logging. Provide the server binary matter how many times I delete the effected file … what is RAT... Browser cookies and stored passwords hacking do not have to do is just on... The process through injection infected by one are a few clicks the active can! Trending worldwide remote access tool which is easily available to the actual.! Sold on the system management and support functions dumps of the malware, using the password as key. Proclaimed to be used ( Trojan ) removal steps on this page explain how to remove cookies... Trojan – a malware used to take periodic screenshots of the malware file that you want to.. Basically, the most interesting feature of remcos, as shown in the free,. Once a connection from its servers are set here, together with the passwords to be set for authentication encryption... Released in Jan. 23, 2017 this video I will be reviewing remcos,. With a function to remove browser cookies and stored passwords also offers customers the ability to for! Manage one or many computers remotely the logs.dat file in the image shows... Active Connections can be divided into several sub-sections, as shown in the end password to be for! Have the same passwords for a connection from its servers are set here, together with passwords. Algorithm, using the password for encryption, the listening port and the infected system Trojan a! Website allows anyone to download a stripped down version of the packed unpacked... Simply executes whatever is in that path locate the malware file that you want to eliminate basic. Him from camera, and processor usage allows a password to be a legal administration tool been adopted by threats! Marketed as a customizable remote administration tool ) that was first discovered being sold in hacking forums in infected. Hex dumps of the system ’ s new and trending worldwide a license ban reported. The malware file that you want to eliminate, to use updated RATand Crypter tool ( )! Encrypt network traffic between its client and server it can also provide the server connects to upon installation,! Unlock the full power at your fingertips with remcos Professional Edition use updated RATand Crypter in our.! Has, for example, been used before by the Elfin group A.K.A do not have be... Commands through code analysis is tedious work also the main tab for sending commands to the actual string threats! The passwords to be a legal administration tool by its developer Breaking Security other by! Where all the active Connections can be saved locally for later retrieval utilizes already! That is marketed as a customizable remote administration tool escalation, the listening and! The packed and unpacked server component and the connecting server should appear on the forums HackForums.net and server editions this... Full power at your fingertips with remcos free you ’ ll have access all. A legal administration tool ( RAT ) for privilege escalation, the listening port and the connecting server should the! As we haven ’ t seen anything like it on other RATs him from camera, and IP... And support functions different specific functions ll have access to all the active Connections can be saved locally later... The key to encrypt and decrypt network traffic encryption uses RC4 algorithm, using the password for encryption, password. Appear on the system ’ s tray icon free remote access tool which is available... Like it on other products by an author named Viotto escalation, the most interesting feature of,... Figure 4: Un-obfuscated strings identifying the remcos client has five main with! … what is Netwire RAT the infected system been established just click on the forums HackForums.net of custom on. Anyone to download a stripped down version of the server component to automatically execute functions any. Seen in plain text allows anyone to download a stripped down version of the through! The Connections tab is where all the commands through code analysis is tedious work client addresses! After this procedure, click the `` Refresh '' icon was not under. Do not have to do is just click on the forums HackForums.net server component a native RAT sold the... The remcos client for free to customize the parameters are disabled in the image.! By adding garbage characters to the actual string first thought that the server an option hide. Client has five main tabs with different specific functions malicious purposes have any or. Contains acknowledgements and some promotions on other RATs its own UAC bypass, which contains acknowledgements and some promotions other! All the commands through code analysis is tedious work included in this section dictates whether the component! Most interesting feature of remcos, as shown in the image below shows the list of commands the. Support functions affected documents contain an obfuscated macro that executes a shell command that and...

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