MSIL/Kryptik.AHA

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

What is MSIL/Kryptik.AHA infection?

In this post you will certainly discover concerning the definition of MSIL/Kryptik.AHA and its adverse impact on your computer. Such ransomware are a form of malware that is clarified by on the internet fraudulences to require paying the ransom money by a victim.

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Most of the situations, MSIL/Kryptik.AHA infection will instruct its victims to initiate funds move for the purpose of neutralizing the amendments that the Trojan infection has introduced to the sufferer’s device.

MSIL/Kryptik.AHA Summary

These alterations can be as adheres to:

  • 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.
  • Drops a binary and executes it. Trojan-Downloader installs itself to the system and waits until an Internet connection becomes available to connect to a remote server or website in order to download additional malware onto the infected computer.
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses Windows utilities for basic functionality;
  • 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;
  • Ciphering the files found on the sufferer’s hard disk — so the victim can no longer make use of the data;
  • Preventing regular accessibility to the victim’s workstation;
Similar behavior
Related domains
z.whorecord.xyzRansom:Win32/Blocker.09f52606
a.tomx.xyzRansom:Win32/Blocker.09f52606

MSIL/Kryptik.AHA

One of the most regular channels where MSIL/Kryptik.AHA Ransomware Trojans are injected are:

  • By ways of phishing e-mails;
  • As a repercussion of user ending up on a source that hosts a harmful software application;

As soon as the Trojan is successfully injected, it will certainly either cipher the data on the victim’s PC or prevent the gadget from functioning in a correct way – while also positioning a ransom note that discusses the requirement for the victims to effect the settlement for the objective of decrypting the papers or recovering the data system back to the initial condition. In most circumstances, the ransom money note will show up when the customer reboots the COMPUTER after the system has actually already been damaged.

MSIL/Kryptik.AHA distribution channels.

In different corners of the globe, MSIL/Kryptik.AHA grows by leaps and bounds. Nonetheless, the ransom notes and also techniques of obtaining the ransom money amount might differ depending upon certain local (local) setups. The ransom notes and techniques of obtaining the ransom money amount may vary depending on particular neighborhood (regional) setups.

Ransomware injection

As an example:

    Faulty informs regarding unlicensed software.

    In specific locations, the Trojans frequently wrongfully report having actually identified some unlicensed applications allowed on the sufferer’s gadget. The alert then demands the individual to pay the ransom money.

    Faulty declarations concerning unlawful content.

    In countries where software application piracy is less prominent, this approach is not as effective for the cyber fraudulences. Alternatively, the MSIL/Kryptik.AHA popup alert may falsely claim to be deriving from a police organization and will certainly report having located kid porn or various other prohibited data on the tool.

    MSIL/Kryptik.AHA popup alert may incorrectly declare to be deriving from a law enforcement establishment and also will certainly report having situated child pornography or other prohibited data on the tool. The alert will similarly consist of a need for the customer to pay the ransom money.

Technical details

File Info:

crc32: E4164E66
md5: 6eabb73eba74a08c1d48202d887aa9e6
name: 6EABB73EBA74A08C1D48202D887AA9E6.mlw
sha1: 8d5cbb02c45bae46db2a6e7372eeedfce7c249ba
sha256: a3f5aaeefd56c2b8f3b0dd71955fa11e2c7b312c7271c1624b474f44210eebf2
sha512: bda8a3904fcc6daa582fe9aa2d71ae80f9770d6d9c97d24a6a5cfe67a8f0496760e38f60a1acfca81c8a7dcb0471097738ceb593dc01cee815ae5da33fe351a6
ssdeep: 1536:zqom/tf0rfsWscQYh6FvTNHN5CPEkQZG0fXPzg/7HMrq2fo8A:MtfE9QYhsvTNt80ZG0fXPEzsrqYA
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0
LegalCopyright: AAaYVV6WrFd1
Assembly Version: 4.2.4.5
InternalName: Love Song.exe
FileVersion: 4.1.5.x200b0
CompanyName: AAaYVV6WrFd1
LegalTrademarks: GFa754(6uMdxa7
Comments: GFa754(6uMdxa7
ProductName: GFa754(6uMdxa7
ProductVersion: 4.1.5.x200b0
FileDescription: AAaYVV6WrFd1
OriginalFilename: Love Song.exe

MSIL/Kryptik.AHA also known as:

GridinSoftTrojan.Ransom.Gen
K7AntiVirusTrojan ( 0055e3981 )
Elasticmalicious (high confidence)
DrWebTrojan.DownLoader16.1410
CynetMalicious (score: 100)
ALYacGen:Variant.Razy.9594
CylanceUnsafe
ZillyaTrojan.Blocker.Win32.33080
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_60% (D)
AlibabaRansom:Win32/Blocker.09f52606
K7GWTrojan ( 0055e3981 )
Cybereasonmalicious.eba74a
SymantecML.Attribute.HighConfidence
ESET-NOD32a variant of MSIL/Kryptik.AHA
APEXMalicious
AvastMSIL:GenMalicious-KT [Trj]
ClamAVWin.Dropper.Formbook-9085597-0
KasperskyTrojan-Ransom.Win32.Blocker.iabe
BitDefenderGen:Variant.Razy.9594
NANO-AntivirusTrojan.Win32.Kryptik.dfivna
MicroWorld-eScanGen:Variant.Razy.9594
TencentWin32.Trojan.Blocker.Wsul
Ad-AwareGen:Variant.Razy.9594
SophosML/PE-A + Mal/MSIL-SH
ComodoMalware@#2zngbmbdkkb03
BitDefenderThetaGen:NN.ZemsilF.34692.km0@aCb2jQe
VIPRETrojan.Win32.Generic!BT
McAfee-GW-EditionTrojan-FDWX!6EABB73EBA74
FireEyeGeneric.mg.6eabb73eba74a08c
EmsisoftGen:Variant.Razy.9594 (B)
SentinelOneStatic AI – Malicious PE
JiangminTrojan.Blocker.bec
AviraTR/Dropper.MSIL.Gen
Antiy-AVLTrojan/Generic.ASMalwS.C03312
MicrosoftTrojan:Win32/Occamy.C
AegisLabTrojan.Win32.Generic.mCej
ZoneAlarmTrojan-Ransom.Win32.Blocker.iabe
GDataGen:Variant.Razy.9594
AhnLab-V3Trojan/Win32.Crypt.C116983
McAfeeTrojan-FDWX!6EABB73EBA74
MAXmalware (ai score=88)
VBA32TrojanRansom.Blocker
MalwarebytesTrojan.MalPack.MSIL
PandaTrj/CI.A
RisingRansom.Blocker!8.12A (CLOUD)
YandexTrojan.Blocker!/grGli7okF4
IkarusMSIL
MaxSecureTrojan.Malware.300983.susgen
FortinetW32/Generic.ADH!tr
AVGMSIL:GenMalicious-KT [Trj]
Paloaltogeneric.ml

How to remove MSIL/Kryptik.AHA virus?

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/Kryptik.AHA 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/Kryptik.AHA 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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