Win32/Injector.CYSU

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

What is Win32/Injector.CYSU infection?

In this post you will find concerning the interpretation of Win32/Injector.CYSU as well as its negative impact on your computer system. Such ransomware are a form of malware that is clarified by on-line frauds to demand paying the ransom money by a sufferer.

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In the majority of the instances, Win32/Injector.CYSU ransomware will certainly advise its victims to start funds transfer for the purpose of neutralizing the changes that the Trojan infection has introduced to the victim’s tool.

Win32/Injector.CYSU Summary

These alterations 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.
  • Injection (inter-process);
  • Injection (Process Hollowing);
  • 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.

  • Unconventionial language used in binary resources: Spanish (Mexican);
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Executed a very long command line or script command which may be indicative of chained commands or obfuscation;
  • A scripting utility was executed;
  • Uses Windows utilities for basic functionality;
  • Executed a process and injected code into it, probably while unpacking;
  • 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.
  • Ciphering the documents located on the target’s hard disk — so the sufferer can no longer utilize the information;
  • Preventing routine access to the victim’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.

Win32/Injector.CYSU

One of the most common channels through which Win32/Injector.CYSU are injected are:

  • By methods of phishing e-mails. Email phishing is a cyber attack that uses disguised email as a goal is to trick the recipient into believing that the message is something they want or need — a request from their bank, for instance, or a note from someone in their company — and to click a link for download a malware.
  • As a repercussion of individual ending up on a resource that organizes a malicious software program;

As quickly as the Trojan is effectively infused, it will certainly either cipher the information on the target’s PC or avoid the gadget from operating in a correct way – while likewise putting a ransom note that states the demand for the targets to effect the payment for the objective of decrypting the files or restoring the file system back to the first condition. In the majority of circumstances, the ransom note will show up when the client reboots the COMPUTER after the system has already been harmed.

Win32/Injector.CYSU circulation channels.

In various corners of the globe, Win32/Injector.CYSU expands by leaps and also bounds. Nevertheless, the ransom notes and also techniques of extorting the ransom money amount might vary relying on particular local (local) settings. The ransom notes as well as techniques of obtaining the ransom amount might differ depending on certain local (regional) setups.

Ransomware injection

For example:

    Faulty alerts concerning unlicensed software program.

    In particular locations, the Trojans commonly wrongfully report having detected some unlicensed applications enabled on the target’s tool. The sharp after that requires the customer to pay the ransom.

    Faulty declarations about unlawful material.

    In countries where software program piracy is much less preferred, this method is not as effective for the cyber frauds. Additionally, the Win32/Injector.CYSU popup alert may falsely assert to be stemming from a law enforcement organization as well as will report having situated kid porn or other illegal information on the tool.

    Win32/Injector.CYSU popup alert may falsely claim to be deriving from a law enforcement organization and will certainly report having located youngster pornography or other illegal information on the gadget. The alert will similarly consist of a demand for the individual to pay the ransom.

Technical details

File Info:

crc32: 33D50C4B
md5: b97b04218a37f5d74000efeed47ff2b2
name: B97B04218A37F5D74000EFEED47FF2B2.mlw
sha1: f6495b52d06d51b164cbacfd9825afbd7772af5d
sha256: 5039f1e72137a4fa19c3faedd7591c17a989d4db21b19d07bedd838dcd7961dd
sha512: 544d4e686c8583fd018ed94b405008f71348de3ea09f567d8648882c81c1946e68a4329cf211682930e676c10f1c270e2ca89cf486a835a9dde708df6a178142
ssdeep: 1536:Px7gDMu19CPTajtPbcdR/QRy1Peztw02B/qQ3k/EHw6AwJyjqI4UBYntuiQzVv04:Px789Yaj2oA1P67QU/x6bkWEBvVvN
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Injector.CYSU also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
DrWeb Trojan.KillProc.42578
MicroWorld-eScan Trojan.GenericKDZ.33017
FireEye Generic.mg.b97b04218a37f5d7
McAfee PWSZbot-FARO!B97B04218A37
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
AegisLab Trojan.Win32.Shade.j!c
Sangfor Trojan.Win32.Save.a
K7AntiVirus Trojan ( 0055e40a1 )
BitDefender Trojan.GenericKDZ.33017
K7GW Trojan ( 0055e40a1 )
CrowdStrike win/malicious_confidence_100% (D)
BitDefenderTheta Gen:NN.ZexaF.34608.iqW@aaz3ywOe
Symantec ML.Attribute.HighConfidence
Paloalto generic.ml
Kaspersky Trojan-Ransom.Win32.Shade.xs
Alibaba Ransom:Win32/Shade.d2dedda3
NANO-Antivirus Trojan.Win32.Encoder.evdbbc
Rising Ransom.Shade!8.12CC (CLOUD)
Ad-Aware Trojan.GenericKDZ.33017
Sophos ML/PE-A + Mal/Zbot-UM
Comodo Malware@#aygxa6ju0yff
McAfee-GW-Edition BehavesLike.Win32.Generic.ch
Emsisoft Trojan.GenericKDZ.33017 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Backdoor.Androm.hvd
Avira HEUR/AGEN.1108493
Antiy-AVL Trojan[Spy]/Win32.Zbot
Microsoft Trojan:Win32/Tiggre!rfn
Arcabit Trojan.Generic.D80F9
ZoneAlarm Trojan-Ransom.Win32.Shade.xs
GData Trojan.GenericKDZ.33017
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.Xema.R182049
VBA32 BScope.Trojan.Encoder
ALYac Trojan.GenericKDZ.33017
MAX malware (ai score=99)
Malwarebytes Ransom.FileCryptor
Panda Trj/Genetic.gen
APEX Malicious
ESET-NOD32 a variant of Win32/Injector.CYSU
Tencent Malware.Win32.Gencirc.10b58903
Yandex Trojan.GenAsa!a6Vace6q6Wk
Ikarus Trojan.Win32.Injector
eGambit Unsafe.AI_Score_99%
Fortinet W32/Injector.CYYF!tr
AVG Win32:Malware-gen
Cybereason malicious.18a37f
Avast Win32:Malware-gen
Qihoo-360 Win32/Ransom.Shade.HwcBQ28A

How to remove Win32/Injector.CYSU virus?

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 Win32/Injector.CYSU 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 Win32/Injector.CYSU 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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