MSIL/Spy.Keylogger.AUF
Rachel Ross
Updated on April 10, 2026
What is MSIL/Spy.Keylogger.AUF infection?
In this post you will find concerning the interpretation of MSIL/Spy.Keylogger.AUF and its adverse influence on your computer system. Such ransomware are a kind of malware that is elaborated by online frauds to require paying the ransom by a target.
Most of the instances, MSIL/Spy.Keylogger.AUF virus will instruct its targets to start funds transfer for the purpose of reducing the effects of the modifications that the Trojan infection has introduced to the target’s device.
MSIL/Spy.Keylogger.AUF 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.
- A process attempted to delay the analysis task.;
- Sniffs keystrokes;
- 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
- Creates a copy of itself;
- Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
- Ciphering the papers located on the victim’s hard drive — so the victim can no longer use the data;
- Preventing regular accessibility to the victim’s workstation;
MSIL/Spy.Keylogger.AUF
The most common channels whereby MSIL/Spy.Keylogger.AUF Trojans are injected are:
- By ways of phishing emails;
- As a consequence of individual winding up on a resource that organizes a destructive software application;
As quickly as the Trojan is successfully infused, it will certainly either cipher the information on the victim’s PC or protect against the gadget from functioning in a correct way – while also putting a ransom money note that discusses the demand for the sufferers to effect the settlement for the function of decrypting the documents or bring back the documents system back to the initial condition. In many instances, the ransom note will turn up when the customer reboots the COMPUTER after the system has actually already been damaged.
MSIL/Spy.Keylogger.AUF circulation networks.
In various corners of the world, MSIL/Spy.Keylogger.AUF expands by jumps as well as bounds. Nonetheless, the ransom money notes as well as techniques of extorting the ransom amount may differ depending on particular regional (local) setups. The ransom money notes as well as tricks of obtaining the ransom quantity might differ depending on certain local (local) settings.
As an example:
Faulty signals regarding unlicensed software program.
In certain locations, the Trojans usually wrongfully report having detected some unlicensed applications enabled on the sufferer’s tool. The alert then demands the individual to pay the ransom money.
Faulty statements concerning illegal content.
In countries where software program piracy is much less prominent, this approach is not as efficient for the cyber fraudulences. Alternatively, the MSIL/Spy.Keylogger.AUF popup alert may wrongly assert to be deriving from a law enforcement organization and also will report having located child porn or various other prohibited data on the device.
MSIL/Spy.Keylogger.AUF popup alert may incorrectly claim to be acquiring from a regulation enforcement institution and will report having situated kid pornography or various other prohibited data on the gadget. The alert will in a similar way have a need for the user to pay the ransom.
Technical details
File Info:
crc32: D128EC7Cmd5: 71e65a674a16e690bf822113863716d0name: 71E65A674A16E690BF822113863716D0.mlwsha1: 758cadd080452a00624afe4ee881dfab56d953f8sha256: ef7ed3b70838e286adebf9e55bc4ce64d1dd35cd918e9dbc5d5f6ed19a58d882sha512: bbe99733cbab709dd2aa2bfed61720db989fb9d2593c14ba1544828789cedf50f5720df57b791b79d70fad112a542a241f5dd551fd6ac89e028fda64c3d0c49dssdeep: 384:zdLKWtdpradwTeQ1PeTkwFW4S/S/J9Jass+1uiXSKAUPEQPr9xL16:j1raiTJWphSe4+mQMQPrrL4type: PE32 executable (console) Intel 80386 Mono/.Net assembly, for MS WindowsVersion Info:
Translation: 0x0000 0x04b0LegalCopyright: Copyright xa9 2017Assembly Version: 1.0.0.0InternalName: ConsoleApplication1.exeFileVersion: 1.0.0.0CompanyName: LegalTrademarks: Comments: ProductName: ConsoleApplication1ProductVersion: 1.0.0.0FileDescription: ConsoleApplication1OriginalFilename: ConsoleApplication1.exe
MSIL/Spy.Keylogger.AUF also known as:
| GridinSoft | Trojan.Ransom.Gen |
| K7AntiVirus | Spyware ( 004cf9741 ) |
| Cynet | Malicious (score: 85) |
| ALYac | Trojan.GenericKD.5311951 |
| Cylance | Unsafe |
| Sangfor | Trojan.Win32.Save.a |
| Alibaba | Ransom:Win32/Blocker.882a6243 |
| K7GW | Spyware ( 004cf9741 ) |
| Cybereason | malicious.74a16e |
| Symantec | ML.Attribute.HighConfidence |
| ESET-NOD32 | a variant of MSIL/Spy.Keylogger.AUF |
| APEX | Malicious |
| Avast | Win32:Malware-gen |
| Kaspersky | Trojan-Ransom.Win32.Blocker.kcba |
| BitDefender | Trojan.GenericKD.5311951 |
| NANO-Antivirus | Trojan.Win32.Blocker.eqalfo |
| MicroWorld-eScan | Trojan.GenericKD.5311951 |
| Tencent | Win32.Trojan.Blocker.Aiig |
| Ad-Aware | Trojan.GenericKD.5311951 |
| Sophos | Mal/Generic-S |
| Comodo | Malware@#37wtuf59bode6 |
| BitDefenderTheta | Gen:NN.ZemsilF.34670.bm0@a0F4OAn |
| VIPRE | Trojan.Win32.Generic!BT |
| McAfee-GW-Edition | Artemis!Trojan |
| FireEye | Generic.mg.71e65a674a16e690 |
| Emsisoft | Trojan.GenericKD.5311951 (B) |
| SentinelOne | Static AI – Malicious PE |
| Avira | TR/Spy.Gen |
| eGambit | Unsafe.AI_Score_99% |
| Microsoft | PUA:Win32/Vigua.A |
| AegisLab | Trojan.Win32.Blocker.4!c |
| GData | Trojan.GenericKD.5311951 |
| McAfee | Artemis!71E65A674A16 |
| MAX | malware (ai score=88) |
| VBA32 | Hoax.Blocker |
| Panda | Trj/GdSda.A |
| Rising | Ransom.Blocker!8.12A (CLOUD) |
| Yandex | Trojan.Blocker!jyCcdMaYRyY |
| Ikarus | Trojan.MSIL.Spy |
| Fortinet | MSIL/Keylogger.AUF!tr.spy |
| AVG | Win32:Malware-gen |
| Paloalto | generic.ml |
| Qihoo-360 | Win32/Ransom.Blocker.HgIASOoA |
How to remove MSIL/Spy.Keylogger.AUF 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/Spy.Keylogger.AUF 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/Spy.Keylogger.AUF you can always ask me in the comments for getting help.
References
- GridinSoft Anti-Malware Review from HowToFix site:
- More information about GridinSoft products:
