Ransom:Win32/Crysis!MTB

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

What is Ransom:Win32/Crysis!MTB infection?

In this post you will locate concerning the definition of Ransom:Win32/Crysis!MTB as well as its negative impact on your computer system. Such ransomware are a type of malware that is specified by on-line frauds to demand paying the ransom money by a sufferer.

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Most of the cases, Ransom:Win32/Crysis!MTB infection will instruct its targets to initiate funds move for the purpose of neutralizing the modifications that the Trojan infection has actually presented to the sufferer’s device.

Ransom:Win32/Crysis!MTB Summary

These alterations 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.
  • Injection (inter-process);
  • Injection (Process Hollowing);
  • 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.;
  • Starts servers listening on 0.0.0.0:0;
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • Reads data out of its own binary image. The trick that allows the malware to read data out of your computer’s memory.

    Everything you run, type, or click on your computer goes through the memory. This includes passwords, bank account numbers, emails, and other confidential information. With this vulnerability, there is the potential for a malicious program to read that data.

  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • The executable is compressed using UPX;
  • Executed a process and injected code into it, probably while unpacking;
  • Attempts to delete volume shadow copies;
  • Attempts to repeatedly call a single API many times in order to delay analysis time. This significantly complicates the work of the virus analyzer. Typical malware tactics!
  • 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
  • Exhibits possible ransomware file modification behavior;
  • Creates a hidden or system file. The malware adds the hidden attribute to every file and folder on your system, so it appears as if everything has been deleted from your hard drive.
  • Creates a copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the records situated on the sufferer’s hard drive — so the sufferer can no more utilize the information;
  • Preventing regular accessibility to the target’s workstation;

Ransom:Win32/Crysis!MTB

The most common networks through which Ransom:Win32/Crysis!MTB are infused are:

  • By means of phishing emails;
  • As a repercussion of individual ending up on a resource that holds a malicious software;

As quickly as the Trojan is successfully infused, it will certainly either cipher the data on the victim’s computer or prevent the tool from operating in a proper fashion – while likewise positioning a ransom money note that mentions the requirement for the sufferers to impact the repayment for the objective of decrypting the records or recovering the data system back to the preliminary condition. In most instances, the ransom money note will turn up when the customer reboots the COMPUTER after the system has actually already been harmed.

Ransom:Win32/Crysis!MTB circulation channels.

In various edges of the globe, Ransom:Win32/Crysis!MTB expands by jumps and bounds. Nonetheless, the ransom money notes and methods of extorting the ransom money amount might differ depending upon particular regional (local) settings. The ransom money notes and also tricks of obtaining the ransom money quantity may vary depending on certain local (local) settings.

Ransomware injection

As an example:

    Faulty alerts about unlicensed software application.

    In particular areas, the Trojans frequently wrongfully report having identified some unlicensed applications enabled on the sufferer’s tool. The alert then requires the user to pay the ransom.

    Faulty statements concerning prohibited material.

    In countries where software piracy is much less popular, this approach is not as effective for the cyber scams. Additionally, the Ransom:Win32/Crysis!MTB popup alert may wrongly claim to be originating from a law enforcement establishment and also will report having located kid pornography or various other prohibited data on the gadget.

    Ransom:Win32/Crysis!MTB popup alert might falsely declare to be deriving from a legislation enforcement organization as well as will certainly report having located kid porn or other unlawful information on the device. The alert will similarly have a demand for the customer to pay the ransom.

Technical details

File Info:

crc32: ED5E5FBD
md5: d20d699f85d5831fc822101a2c79dfed
name: D20D699F85D5831FC822101A2C79DFED.mlw
sha1: 0a9ea1887588eecd946b5ead360c7c4a796451ab
sha256: 83a3c793692de455e411f738a1a58ec717ae045cc03da4d6b9ac0ee44a5c902a
sha512: ad8defaf8576cd5afc612f506f74a268e2c5a7a526dcb44ed5d907d40e3b981be0f6538add4c4e37556e9428a05384b7b2b300765a0aca0826ad5b7939c397ab
ssdeep: 3072:bQ7vyr5kGcY0KZAUjqRE63eG53FaeIZEnjSitaLcRYphOEoxcqc:wvm57cYJAU+DDxGEjwLcRYphOnxcb
type: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

LegalCopyright: Copyright xa9 1999 - 2014 Info-ZIP
InternalName: Mind
FileVersion: 5.6.7.801
CompanyName: Info-ZIP
PrivateBuild: 5.6.7.801
LegalTrademarks: Copyright xa9 1999 - 2014 Info-ZIP
Comments: Dip 'out Apache Discounts Erp
ProductName: Mind
Languages: English
ProductVersion: 5.6.7.801
FileDescription: Dip 'out Apache Discounts Erp
OriginalFilename: Mind.exe
Translation: 0x0409 0x04b0

Ransom:Win32/Crysis!MTB also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
K7AntiVirusTrojan ( 0051a8021 )
Elasticmalicious (high confidence)
DrWebTrojan.Encoder.3953
CynetMalicious (score: 99)
ALYacTrojan.GenericKD.32687253
CylanceUnsafe
ZillyaTrojan.Crusis.Win32.2035
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_80% (W)
AlibabaRansom:Win32/Crysis.acdf4832
K7GWTrojan ( 0051a8021 )
CyrenW32/Crusis.ECLE-5072
SymantecML.Attribute.HighConfidence
ESET-NOD32Win32/Filecoder.Crysis.P
ZonerTrojan.Win32.85678
APEXMalicious
AvastOther:Malware-gen [Trj]
KasperskyTrojan-Ransom.Win32.Crusis.duq
BitDefenderTrojan.GenericKD.32687253
NANO-AntivirusTrojan.Win32.Crusis.ghtzni
MicroWorld-eScanTrojan.GenericKD.32687253
TencentWin32.Trojan.Crusis.Wncf
Ad-AwareTrojan.GenericKD.32687253
SophosMal/Generic-S + Mal/Generic-L
ComodoMalware@#1rp5yhl507gik
BitDefenderThetaGen:NN.ZexaF.34688.nmKfaGWfiNni
VIPREWin32.Malware!Drop
TrendMicroTROJ_GEN.USMGAHAL
McAfee-GW-EditionBehavesLike.Win32.Spyware.dc
FireEyeGeneric.mg.d20d699f85d5831f
EmsisoftTrojan.GenericKD.32687253 (B)
SentinelOneStatic AI – Suspicious PE
JiangminTrojan.Crusis.ahd
WebrootW32.Malware.Gen
AviraTR/AD.Crysis.fekpa
eGambitUnsafe.AI_Score_90%
MicrosoftRansom:Win32/Crysis!MTB
ArcabitTrojan.Generic.D1F2C495
AegisLabTrojan.Win32.Crusis.j!c
GDataWin32.Trojan.Agent.19KMIV
AhnLab-V3Malware/Win32.Generic.C3558749
McAfeeRDN/Generic.dx
MAXmalware (ai score=89)
VBA32TrojanRansom.Crusis
PandaTrj/WLT.E
TrendMicro-HouseCallTROJ_GEN.USMGAHAL
RisingRansom.Crusis!8.5724 (KTSE)
YandexTrojan.Crusis!Mow8c2LnY8E
IkarusTrojan-Ransom.GandCrab
FortinetW32/Filecoder_Crysis.P!tr
AVGOther:Malware-gen [Trj]
Paloaltogeneric.ml

How to remove Ransom:Win32/Crysis!MTB 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 Ransom:Win32/Crysis!MTB 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 Ransom:Win32/Crysis!MTB 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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