MSIL/Injector.CAI

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

What is MSIL/Injector.CAI infection?

In this article you will certainly locate about the meaning of MSIL/Injector.CAI and also its unfavorable impact on your computer system. Such ransomware are a form of malware that is elaborated by on-line fraudulences to require paying the ransom by a sufferer.

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In the majority of the instances, MSIL/Injector.CAI virus will instruct its targets to launch funds move for the function of counteracting the modifications that the Trojan infection has presented to the sufferer’s tool.

MSIL/Injector.CAI Summary

These modifications can be as complies with:

  • 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.
  • Uses Windows utilities for basic functionality;
  • Sniffs keystrokes;
  • A process was set to shut the system down when terminated;
  • 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
  • Likely virus infection of existing system binary;
  • Creates a copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the records found on the sufferer’s hard drive — so the victim can no more make use of the data;
  • Preventing regular 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.
Similar behavior
Related domains
babyboy.no-ip.info Win32/Trojan.Ransom.9a6

MSIL/Injector.CAI

One of the most common networks whereby MSIL/Injector.CAI Ransomware Trojans are infused are:

  • By methods of phishing emails;
  • As an effect of user winding up on a source that holds a harmful software program;

As soon as the Trojan is efficiently injected, it will certainly either cipher the data on the target’s PC or protect against the device from operating in an appropriate way – while additionally placing a ransom note that discusses the need for the sufferers to impact the payment for the function of decrypting the records or bring back the documents system back to the first problem. In a lot of instances, the ransom money note will turn up when the client restarts the PC after the system has currently been damaged.

MSIL/Injector.CAI circulation channels.

In different edges of the globe, MSIL/Injector.CAI grows by leaps and bounds. However, the ransom money notes and techniques of extorting the ransom amount may differ depending on certain local (regional) setups. The ransom notes as well as tricks of extorting the ransom quantity might differ depending on certain regional (local) settings.

Ransomware injection

For example:

    Faulty alerts regarding unlicensed software.

    In specific locations, the Trojans often wrongfully report having detected some unlicensed applications allowed on the sufferer’s device. The sharp then requires the customer to pay the ransom.

    Faulty declarations about illegal content.

    In nations where software application piracy is much less popular, this method is not as effective for the cyber fraudulences. Conversely, the MSIL/Injector.CAI popup alert might falsely declare to be stemming from a law enforcement organization and also will certainly report having located child pornography or various other prohibited data on the gadget.

    MSIL/Injector.CAI popup alert may falsely claim to be acquiring from a law enforcement establishment as well as will report having situated youngster porn or various other illegal information on the device. The alert will likewise have a need for the individual to pay the ransom.

Technical details

File Info:

crc32: C4654CC9
md5: 7d136e30122ba7dbc90456a0df26e85b
name: 7D136E30122BA7DBC90456A0DF26E85B.mlw
sha1: 46b6391a15532426e3b4580f73b574400b440f1f
sha256: 501b089c2761c40037225feaac7e275c37e3dcbcadd821064cf6e4456b240954
sha512: 38004443a392ec55f8b7afa59b7db892ad431ba22f7b2722bb38d8dc5dc7247d15c92485640293a1e007a5d77b0beddd70327d7432bd024d04010cb669b79b23
ssdeep: 1536:YJx1it2q+G9fXUISu+70Oi1bEVtIMn9IwjrrpDpgGX9gM2Daf9p1jFIV:+Xc+iU4+q1yF6GX9gM2ef9p1jSV
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0
LegalCopyright:
Assembly Version: 0.0.0.0
InternalName: rtmpdumb.exe
FileVersion: 0.0.0.0
ProductVersion: 0.0.0.0
FileDescription:
OriginalFilename: rtmpdumb.exe

MSIL/Injector.CAI also known as:

GridinSoft Trojan.Ransom.Gen
Elastic malicious (high confidence)
DrWeb Win32.HLLW.AutorunerENT.25074
MicroWorld-eScan Gen:Variant.Razy.528856
FireEye Generic.mg.7d136e30122ba7db
Qihoo-360 Win32/Trojan.Ransom.9a6
McAfee Artemis!7D136E30122B
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
Sangfor Trojan.Win32.Save.a
K7AntiVirus Trojan ( 0055e39a1 )
BitDefender Gen:Variant.Razy.528856
K7GW Trojan ( 0055e39a1 )
Cybereason malicious.0122ba
BitDefenderTheta Gen:NN.ZemsilF.34590.lm0@aSFKNfl
Cyren W32/Bladabindi.DJ.gen!Eldorado
Symantec ML.Attribute.HighConfidence
APEX Malicious
Avast MSIL:GenMalicious-H [Trj]
ClamAV Win.Trojan.Bladbindi-1
Kaspersky HEUR:Backdoor.MSIL.Generic
Alibaba Backdoor:MSIL/Bladabindi.d67ef906
NANO-Antivirus Trojan.Win32.Blocker.cvvast
Tencent Msil.Backdoor.Generic.Ahyh
Ad-Aware Gen:Variant.Razy.528856
Emsisoft Gen:Variant.Razy.528856 (B)
Comodo TrojWare.MSIL.Injector.CFN@56lbek
F-Secure Heuristic.HEUR/AGEN.1140076
McAfee-GW-Edition BehavesLike.Win32.Generic.cm
Sophos Mal/Generic-S
Ikarus Trojan.Msil
Jiangmin Trojan.MSIL.fqtp
Avira HEUR/AGEN.1140076
Antiy-AVL Trojan[Ransom]/Win32.Blocker
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Backdoor:MSIL/Bladabindi.gen!B
Arcabit Trojan.Razy.D811D8
ZoneAlarm HEUR:Backdoor.MSIL.Generic
GData Gen:Variant.Razy.528856
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.Jorik.C202082
VBA32 Hoax.Blocker
ALYac Gen:Variant.Razy.528856
MAX malware (ai score=100)
Malwarebytes Generic.Malware/Suspicious
Panda Trj/CI.A
ESET-NOD32 a variant of MSIL/Injector.CAI
Rising Backdoor.Bladabindi!8.B1F (CLOUD)
SentinelOne Static AI – Malicious PE
eGambit Unsafe.AI_Score_83%
Fortinet MSIL/Dropper.VPC!tr
AVG MSIL:GenMalicious-H [Trj]
Paloalto generic.ml
CrowdStrike win/malicious_confidence_100% (D)

How to remove MSIL/Injector.CAI ransomware?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
Reasons why I would recommend GridinSoft1

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 MSIL/Injector.CAI 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:

Full version of GridinSoft

Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove MSIL/Injector.CAI 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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