Ransom:Win32/Chaicha

Written by Robert Bailey

What is Ransom:Win32/Chaicha infection?

In this post you will discover about the meaning of Ransom:Win32/Chaicha and also its negative impact on your computer. Such ransomware are a type of malware that is elaborated by on-line fraudulences to require paying the ransom money by a victim.

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In the majority of the instances, Ransom:Win32/Chaicha infection will certainly advise its targets to start funds move for the function of counteracting the modifications that the Trojan infection has actually presented to the target’s tool.

Ransom:Win32/Chaicha Summary

These modifications can be as follows:

  • Possible date expiration check, exits too soon after checking local time;
  • 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
  • Writes a potential ransom message to disk;
  • Likely virus infection of existing system binary;
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Ciphering the papers situated on the sufferer’s disk drive — so the target can no more use the information;
  • Preventing routine accessibility to the sufferer’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.

Ransom:Win32/Chaicha

One of the most normal networks whereby Ransom:Win32/Chaicha are infused are:

  • By ways of phishing emails;
  • As an effect of customer ending up on a resource that organizes a destructive software;

As soon as the Trojan is effectively infused, it will certainly either cipher the information on the victim’s computer or protect against the tool from operating in a proper fashion – while likewise positioning a ransom money note that states the need for the targets to impact the settlement for the objective of decrypting the papers or bring back the documents system back to the initial problem. In the majority of circumstances, the ransom note will certainly come up when the customer reboots the COMPUTER after the system has actually currently been harmed.

Ransom:Win32/Chaicha distribution channels.

In numerous edges of the globe, Ransom:Win32/Chaicha grows by leaps and also bounds. However, the ransom money notes as well as techniques of extorting the ransom money quantity might differ depending upon certain local (local) setups. The ransom money notes and also techniques of obtaining the ransom money quantity might differ depending on certain neighborhood (local) setups.

Ransomware injection

For example:

    Faulty alerts concerning unlicensed software program.

    In particular locations, the Trojans commonly wrongfully report having discovered some unlicensed applications enabled on the target’s device. The alert after that requires the user to pay the ransom.

    Faulty declarations concerning prohibited material.

    In countries where software piracy is less popular, this method is not as reliable for the cyber frauds. Additionally, the Ransom:Win32/Chaicha popup alert might wrongly claim to be originating from a police institution as well as will report having situated child porn or other prohibited information on the tool.

    Ransom:Win32/Chaicha popup alert might falsely declare to be obtaining from a regulation enforcement establishment and also will certainly report having located kid pornography or other prohibited data on the gadget. The alert will likewise contain a need for the customer to pay the ransom money.

Technical details

File Info:

crc32: 139BDE19
md5: fdbc8562ec9dd7bdc709326e53063a88
name: FDBC8562EC9DD7BDC709326E53063A88.mlw
sha1: 21f2fed534acade36949dcfd24c43d8d651fcbeb
sha256: 90f833dea9e0edc542eb2b9af443ee2fc1377e8c7102f6777ef8ea7d01c69c31
sha512: 95e948207a83a7b243537dc2eb1a20d9f01102bac3d8c35e4e54dd882bbe9df7078b8487626efed6b0fd247ad42aa51812211a8a0b2e0f42d1f3645889ac4d6a
ssdeep: 768:tzCL/eaYVTGDqH49MarIPtTX7PZsQ2UYVWUI48JL6AxI:ELmaYV7Y9DrIJPaQ2Uw1OL6oI
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Ransom:Win32/Chaicha also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
K7AntiVirus Trojan ( 0053c24c1 )
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.26314
Cynet Malicious (score: 100)
CAT-QuickHeal Trojan.Mauvaise.SL1
ALYac Trojan.Ransom.Filecoder
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_60% (D)
Alibaba Ransom:Win32/Chaicha.8b7edd9e
K7GW Trojan ( 0053c24c1 )
Cybereason malicious.2ec9dd
Symantec Ransom.Cryptolocker
ESET-NOD32 a variant of Win32/Filecoder.STOP.A
APEX Malicious
Avast Win32:Trojan-gen
Kaspersky Trojan.Win32.Scar.rmry
BitDefender Trojan.Ransom.Stop.A
NANO-Antivirus Trojan.Win32.GenKryptik.fhjvrh
ViRobot Trojan.Win32.S.Ransom.73728.A
MicroWorld-eScan Trojan.Ransom.Stop.A
Tencent Win32.Trojan.Scar.Ehia
Ad-Aware Trojan.Ransom.Stop.A
Sophos Mal/Generic-R + Troj/SaveFile-A
Comodo Malware@#1olp2lrjw31xq
BitDefenderTheta Gen:NN.ZexaF.34678.emW@auY1xlo
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Dropper.lm
FireEye Generic.mg.fdbc8562ec9dd7bd
Emsisoft Trojan.Ransom.Stop.A (B)
SentinelOne Static AI – Suspicious PE
Jiangmin Trojan.Scar.mpv
Avira HEUR/AGEN.1128881
Microsoft Ransom:Win32/Chaicha
Arcabit Trojan.Ransom.Stop.A
AegisLab Trojan.Win32.Scar.4!c
GData Trojan.Ransom.Stop.A
AhnLab-V3 Trojan/Win32.Savefiles.C2701916
Acronis suspicious
McAfee GenericRXGL-AQ!FDBC8562EC9D
MAX malware (ai score=99)
VBA32 BScope.Trojan.Fuerboos
Malwarebytes Ransom.Chaicha
Panda Trj/GdSda.A
Rising Ransom.Chaicha!1.B411 (CLOUD)
Yandex Trojan.GenAsa!63E9njbx5x8
Ikarus Trojan.Win32.Krypt
Fortinet W32/Filecoder.GA!tr.ransom
AVG Win32:Trojan-gen
Paloalto generic.ml

How to remove Ransom:Win32/Chaicha virus?

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/Chaicha 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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Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Ransom:Win32/Chaicha 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/products/

About the author

Robert Bailey

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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