UDS:Backdoor.Win32.Remcos

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey

What is UDS:Backdoor.Win32.Remcos infection?

In this post you will certainly locate about the interpretation of UDS:Backdoor.Win32.Remcos and also its unfavorable influence on your computer. Such ransomware are a type of malware that is specified by on-line fraudulences to require paying the ransom money by a sufferer.

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Most of the instances, UDS:Backdoor.Win32.Remcos virus will certainly advise its targets to launch funds move for the purpose of neutralizing the amendments that the Trojan infection has actually introduced to the sufferer’s device.

UDS:Backdoor.Win32.Remcos Summary

These adjustments can be as follows:

  • Executable code extraction. Cybercriminals often use binary packers to hinder the malicious code from reverse-engineered by malware analysts. A packer is a tool that compresses, encrypts, and modifies a malicious file’s format. Sometimes packers can be used for legitimate ends, for example, to protect a program against cracking or copying.
  • Creates RWX memory. There is a security trick with memory regions that allows an attacker to fill a buffer with a shellcode and then execute it. Filling a buffer with shellcode isn’t a big deal, it’s just data. The problem arises when the attacker is able to control the instruction pointer (EIP), usually by corrupting a function’s stack frame using a stack-based buffer overflow, and then changing the flow of execution by assigning this pointer to the address of the shellcode.
  • Reads data out of its own binary image. The trick that allows the malware to read data out of your computer’s memory.

    Everything you run, type, or click on your computer goes through the memory. This includes passwords, bank account numbers, emails, and other confidential information. With this vulnerability, there is the potential for a malicious program to read that data.

  • A process created a hidden window;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Installs itself for autorun at Windows startup. There is simple tactic using the Windows startup folder located at:
    C:\Users\[user-name]\AppData\Roaming\Microsoft\Windows\StartMenu\Programs\Startup. Shortcut links (.lnk extension) placed in this folder will cause Windows to launch the application each time [user-name] logs into Windows.

    The registry run keys perform the same action, and can be located in different locations:

    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
  • Network activity detected but not expressed in API logs. Microsoft built an API solution right into its Windows operating system it reveals network activity for all apps and programs that ran on the computer in the past 30-days. This malware hides network activity.
  • Creates a copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the files found on the target’s hard disk drive — so the sufferer can no longer make use of the data;
  • Preventing regular accessibility to the target’s workstation;

UDS:Backdoor.Win32.Remcos

The most normal networks through which UDS:Backdoor.Win32.Remcos Ransomware are infused are:

  • By means of phishing emails;
  • As a repercussion of customer winding up on a source that organizes a harmful software;

As soon as the Trojan is effectively infused, it will either cipher the information on the sufferer’s computer or prevent the device from operating in a correct fashion – while likewise placing a ransom note that mentions the need for the victims to impact the settlement for the function of decrypting the papers or bring back the data system back to the preliminary condition. In many instances, the ransom money note will turn up when the customer reboots the PC after the system has actually already been damaged.

UDS:Backdoor.Win32.Remcos circulation channels.

In numerous edges of the world, UDS:Backdoor.Win32.Remcos expands by jumps and bounds. Nevertheless, the ransom money notes and tricks of extorting the ransom quantity might vary depending upon certain neighborhood (local) settings. The ransom money notes and tricks of extorting the ransom quantity might differ depending on particular local (regional) setups.

Ransomware injection

For example:

    Faulty signals about unlicensed software.

    In particular areas, the Trojans often wrongfully report having discovered some unlicensed applications allowed on the victim’s device. The sharp then demands the customer to pay the ransom.

    Faulty declarations about unlawful material.

    In nations where software application piracy is less popular, this method is not as efficient for the cyber fraudulences. Alternatively, the UDS:Backdoor.Win32.Remcos popup alert may wrongly assert to be deriving from a law enforcement organization and will certainly report having situated child porn or various other unlawful information on the device.

    UDS:Backdoor.Win32.Remcos popup alert might wrongly declare to be obtaining from a legislation enforcement institution as well as will certainly report having situated child pornography or various other unlawful data on the device. The alert will similarly have a requirement for the individual to pay the ransom money.

Technical details

File Info:

crc32: C7A23A4F
md5: 92a796d32256c200d3d3059c69de74a4
name: 92A796D32256C200D3D3059C69DE74A4.mlw
sha1: 8d203a1473eb53e9fe87b38bb66bc8d701535285
sha256: 54b874aa168963924382bcadb4e63d087c7dbf587a52f16df9efa19157f700b2
sha512: 8230c5e165667f40bd7a4e2ceb0f1c2d91edd94acfc152a26d5675ccb27655032ba4feb7b3ce775af553f7e503f70f1f3685905600d6002e21d2db17a4780fc6
ssdeep: 3072:kEre7GjyCaFvcWM1S6hFv45Im8G9VQ58e9UcWr4AbZjUdvZzIPfhNxn6a:kPXw29SuE7vimXIPfhD6a
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

UDS:Backdoor.Win32.Remcos also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
K7AntiVirusRiskware ( 0040eff71 )
Elasticmalicious (high confidence)
McAfeeArtemis!92A796D32256
CylanceUnsafe
CrowdStrikewin/malicious_confidence_90% (W)
K7GWRiskware ( 0040eff71 )
CyrenW32/Injector.AHD.gen!Eldorado
SymantecPacked.Generic.604
APEXMalicious
AvastFileRepMetagen [Malware]
KasperskyUDS:Backdoor.Win32.Remcos.gen
BitDefenderGen:Variant.Zusy.379911
MicroWorld-eScanGen:Variant.Zusy.379911
SophosML/PE-A
McAfee-GW-EditionBehavesLike.Win32.ICLoader.cc
FireEyeGeneric.mg.92a796d32256c200
MicrosoftTrojan:Win32/Wacatac.B!ml
GDataGen:Variant.Zusy.379911
MAXmalware (ai score=85)
MalwarebytesTrojan.Injector
IkarusTrojan-Ransom.Cerber
AVGFileRepMetagen [Malware]

How to remove UDS:Backdoor.Win32.Remcos ransomware?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
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There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft2.

Download GridinSoft Anti-Malware.

You can download GridinSoft Anti-Malware by clicking the button below:

Run the setup file.

When setup file has finished downloading, double-click on the setup-antimalware-fix.exe file to install GridinSoft Anti-Malware on your system.

Run Setup.exe

An User Account Control asking you about to allow GridinSoft Anti-Malware to make changes to your device. So, you should click “Yes” to continue with the installation.

GridinSoft Anti-Malware Setup

Press “Install” button.

GridinSoft Anti-Malware Install

Once installed, Anti-Malware will automatically run.

GridinSoft Anti-Malware Splash-Screen

Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for UDS:Backdoor.Win32.Remcos files and other malicious programs. This process can take a 20-30 minutes, so I suggest you periodically check on the status of the scan process.

GridinSoft Anti-Malware Scanning

Click on “Clean Now”.

When the scan has finished, you will see the list of infections that GridinSoft Anti-Malware has detected. To remove them click on the “Clean Now” button in right corner.

GridinSoft Anti-Malware Scan Result

Are Your Protected?

GridinSoft Anti-Malware will scan and clean your PC for free in the trial period. The free version offer real-time protection for first 2 days. If you want to be fully protected at all times – I can recommended you to purchase a full version:

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If the guide doesn’t help you to remove UDS:Backdoor.Win32.Remcos you can always ask me in the comments for getting help.

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References

  1. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
  2. More information about GridinSoft products: https://gridinsoft.com/comparison

About the author

Robert Bailey

I'm Robert Bailey, a passionate Security Engineer with a deep fascination for all things related to malware, reverse engineering, and white hat ethical hacking.

As a white hat hacker, I firmly believe in the power of ethical hacking to bolster security measures. By identifying vulnerabilities and providing solutions, I contribute to the proactive defense of digital infrastructures.

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