MSIL/Injector.CAI
Rachel Ross
Updated on March 31, 2026
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.
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.
| 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.
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: C4654CC9md5: 7d136e30122ba7dbc90456a0df26e85bname: 7D136E30122BA7DBC90456A0DF26E85B.mlwsha1: 46b6391a15532426e3b4580f73b574400b440f1fsha256: 501b089c2761c40037225feaac7e275c37e3dcbcadd821064cf6e4456b240954sha512: 38004443a392ec55f8b7afa59b7db892ad431ba22f7b2722bb38d8dc5dc7247d15c92485640293a1e007a5d77b0beddd70327d7432bd024d04010cb669b79b23ssdeep: 1536:YJx1it2q+G9fXUISu+70Oi1bEVtIMn9IwjrrpDpgGX9gM2Daf9p1jFIV:+Xc+iU4+q1yF6GX9gM2ef9p1jSVtype: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS WindowsVersion Info:
Translation: 0x0000 0x04b0LegalCopyright: Assembly Version: 0.0.0.0InternalName: rtmpdumb.exeFileVersion: 0.0.0.0ProductVersion: 0.0.0.0FileDescription: 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 | |
| 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 | |
| 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?
There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft">2.
Download GridinSoft Anti-Malware.
You can download GridinSoft Anti-Malware by clicking the button below:
Download GridinSoft Anti-MalwareRun 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.
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.
Press “Install” button.
Once installed, Anti-Malware will automatically run.
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.
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.
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 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.
References
- GridinSoft Anti-Malware Review from HowToFix site:
- More information about GridinSoft products:
