MSIL/Filecoder.AFT

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

What is MSIL/Filecoder.AFT infection?

In this short article you will certainly find regarding the definition of MSIL/Filecoder.AFT and also its adverse effect on your computer. Such ransomware are a kind of malware that is clarified by on-line scams to demand paying the ransom by a target.

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In the majority of the situations, MSIL/Filecoder.AFT infection will instruct its victims to launch funds move for the function of reducing the effects of the changes that the Trojan infection has introduced to the target’s device.

MSIL/Filecoder.AFT Summary

These modifications 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.
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Detects Sandboxie through the presence of a library;
  • Checks for the presence of known windows from debuggers and forensic tools;
  • Tries to unhook or modify Windows functions monitored by Cuckoo;
  • 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.
  • Checks the version of Bios, possibly for anti-virtualization;
  • Detects VirtualBox through the presence of a registry key;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the files located on the target’s hard drive — so the sufferer can no more utilize the data;
  • Preventing regular accessibility to the target’s workstation;
Similar behavior
Related domains
z.whorecord.xyzTrojan.Ransom.Filecoder
a.tomx.xyzTrojan.Ransom.Filecoder

MSIL/Filecoder.AFT

One of the most regular networks through which MSIL/Filecoder.AFT Ransomware are injected are:

  • By ways of phishing e-mails;
  • As a repercussion of user winding up on a resource that organizes a destructive software;

As quickly as the Trojan is efficiently infused, it will either cipher the information on the victim’s PC or stop the device from operating in a correct way – while likewise positioning a ransom money note that discusses the need for the targets to impact the payment for the objective of decrypting the records or bring back the file system back to the initial condition. In most instances, the ransom note will certainly show up when the client restarts the COMPUTER after the system has actually currently been harmed.

MSIL/Filecoder.AFT distribution channels.

In different edges of the globe, MSIL/Filecoder.AFT expands by jumps as well as bounds. However, the ransom money notes and also methods of extorting the ransom amount may differ relying on particular local (local) settings. The ransom notes and also techniques of obtaining the ransom amount may vary depending on certain local (regional) setups.

Ransomware injection

For instance:

    Faulty informs concerning unlicensed software.

    In certain areas, the Trojans frequently wrongfully report having identified some unlicensed applications allowed on the victim’s gadget. The alert then demands the individual to pay the ransom money.

    Faulty statements about unlawful content.

    In nations where software piracy is less popular, this technique is not as effective for the cyber fraudulences. Alternatively, the MSIL/Filecoder.AFT popup alert may wrongly claim to be originating from a law enforcement institution and will report having located child porn or various other prohibited data on the tool.

    MSIL/Filecoder.AFT popup alert might wrongly assert to be deriving from a law enforcement organization and will report having situated child pornography or other illegal data on the tool. The alert will likewise consist of a requirement for the customer to pay the ransom money.

Technical details

File Info:

crc32: 2DC6FADF
md5: 79b1f7134431990420b7827905e05e30
name: 79B1F7134431990420B7827905E05E30.mlw
sha1: b8003dd6781b169bd3c07a920d4c72f06eef1c3a
sha256: a09ce48399c1819d7f6f78cebe566fdb7ef54e80a567110aa54c8142d6e1d5c2
sha512: 70315147c908212de8a7d254a15a2ba95e346eb90269c12f519ae8a5c58450258c7f2c2de22d6782ae0d45b8ec7a97c7617158966b53ef097008db2e2ce4f408
ssdeep: 49152:2tCNJafnI0Xtj51omykFKpPXgNzFcVe82sSmE7bWsRk8mb3/uDxG:2lfIofywKe82sSnPWs9pw
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

Translation: 0x0000 0x04b0
LegalCopyright: Copyright xa9 2021
Assembly Version: 1.0.0.0
InternalName: LegionLocker2.1.exe
FileVersion: 1.0.0.0
CompanyName:
LegalTrademarks:
Comments:
ProductName: LegionLocker2.1
ProductVersion: 1.0.0.0
FileDescription: LegionLocker2.1
OriginalFilename: LegionLocker2.1.exe

MSIL/Filecoder.AFT also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
K7AntiVirusTrojan ( 0057b6f11 )
Elasticmalicious (high confidence)
DrWebTrojan.Encoder.33881
CynetMalicious (score: 100)
ALYacTrojan.Ransom.Filecoder
CylanceUnsafe
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_100% (W)
AlibabaTrojan:Win32/Witch.38da2831
K7GWTrojan ( 0057b6f11 )
Cybereasonmalicious.6781b1
CyrenW32/Agent.CUB.gen!Eldorado
SymantecML.Attribute.HighConfidence
ESET-NOD32a variant of MSIL/Filecoder.AFT
APEXMalicious
AvastWin32:Malware-gen
KasperskyTrojan.Win32.Witch.chd
BitDefenderTrojan.GenericKD.36821501
NANO-AntivirusVirus.Win32.Gen-Crypt.ccnc
MicroWorld-eScanTrojan.GenericKD.36821501
TencentWin32.Trojan.Witch.Akfh
Ad-AwareTrojan.GenericKD.36821501
SophosMal/Generic-S
BitDefenderThetaGen:NN.ZexaF.34688.0E0@a0sqj4ji
VIPRETrojan.Win32.Generic!BT
TrendMicroTROJ_GEN.R067C0WE321
McAfee-GW-EditionBehavesLike.Win32.Backdoor.vc
FireEyeGeneric.mg.79b1f71344319904
EmsisoftTrojan.GenericKD.36821501 (B)
SentinelOneStatic AI – Suspicious PE
AviraHEUR/AGEN.1135447
eGambitUnsafe.AI_Score_99%
KingsoftWin32.Troj.Generic.a.(kcloud)
MicrosoftRansom:MacOS/Filecoder
GridinsoftTrojan.Heur!.032100A1
GDataTrojan.GenericKD.36821501
AhnLab-V3Ransomware/Win.Legion.C4447432
McAfeeArtemis!79B1F7134431
MAXmalware (ai score=83)
VBA32BScope.Trojan.Fuerboos
PandaTrj/Genetic.gen
TrendMicro-HouseCallTROJ_GEN.R067C0WE321
RisingMalware.Heuristic!ET#100% (RDMK:cmRtazr/V1xZGo6cazXdJH9fqn3Y)
IkarusTrojan.Win32.Themida
FortinetW32/PossibleThreat
AVGWin32:Malware-gen
Paloaltogeneric.ml

How to remove MSIL/Filecoder.AFT 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 MSIL/Filecoder.AFT 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 MSIL/Filecoder.AFT 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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