UDS:Trojan.Win32.Chapak

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

What is UDS:Trojan.Win32.Chapak infection?

In this short article you will certainly discover concerning the interpretation of UDS:Trojan.Win32.Chapak and its negative effect on your computer system. Such ransomware are a form of malware that is elaborated by on the internet frauds to demand paying the ransom money by a target.

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Most of the instances, UDS:Trojan.Win32.Chapak virus will instruct its targets to launch funds move for the purpose of counteracting the amendments that the Trojan infection has introduced to the sufferer’s tool.

UDS:Trojan.Win32.Chapak Summary

These adjustments can be as complies with:

  • 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;
  • 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!
  • 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.
  • Ciphering the papers located on the target’s hard disk — so the target can no more make use of the information;
  • Preventing normal accessibility to the target’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.

UDS:Trojan.Win32.Chapak

One of the most regular channels through which UDS:Trojan.Win32.Chapak Ransomware are injected are:

  • By means of phishing e-mails;
  • As an effect of customer ending up on a resource that hosts a destructive software;

As soon as the Trojan is successfully injected, it will either cipher the data on the sufferer’s computer or protect against the gadget from functioning in an appropriate way – while additionally putting a ransom note that states the requirement for the targets to effect the settlement for the function of decrypting the documents or recovering the file system back to the first condition. In most circumstances, the ransom note will certainly show up when the client restarts the COMPUTER after the system has actually currently been harmed.

UDS:Trojan.Win32.Chapak distribution networks.

In various edges of the globe, UDS:Trojan.Win32.Chapak grows by leaps and bounds. Nonetheless, the ransom money notes as well as techniques of obtaining the ransom quantity might differ depending on particular neighborhood (local) settings. The ransom notes and methods of extorting the ransom money amount might differ depending on certain neighborhood (local) setups.

Ransomware injection

For instance:

    Faulty alerts concerning unlicensed software application.

    In certain locations, the Trojans typically wrongfully report having actually found some unlicensed applications enabled on the target’s gadget. The alert then demands the individual to pay the ransom money.

    Faulty statements regarding illegal content.

    In countries where software application piracy is much less prominent, this approach is not as reliable for the cyber fraudulences. Additionally, the UDS:Trojan.Win32.Chapak popup alert may wrongly assert to be stemming from a police organization as well as will certainly report having situated child porn or other prohibited data on the tool.

    UDS:Trojan.Win32.Chapak popup alert may wrongly declare to be obtaining from a legislation enforcement organization and will certainly report having located youngster pornography or other prohibited data on the tool. The alert will likewise consist of a requirement for the customer to pay the ransom.

Technical details

File Info:

crc32: 3A9100C0
md5: 58f3cacb02a66d8d588e9fdcc394afa4
name: 58F3CACB02A66D8D588E9FDCC394AFA4.mlw
sha1: afafb926b4fb46fccd9c05c638eb77fe1fc7c4b9
sha256: 461645f519c1a96647850541371b94894cd8a5d83f35f9d11599f11bc584bf66
sha512: 7801f3a8ee7327ce31eba41e98cc815ee00d972891f1e3c5289be4be7ffeef2a0843a9fa9e1b6fafa8c620f197dac357b55d50d17e4d78eb5468fe9f6557341b
ssdeep: 3072:UBw1OiCzkGrEOtmmvf9dspTilOhHBCDOwJq:CViSkGr/o1mlO
type: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

LegalCopyright: Copyright (C) 2017, jghjgh
FileVersion: 11.0.0.1
ProductVersion: 11.0.0.1
Translation: 0x0809 0x04b0

UDS:Trojan.Win32.Chapak also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
K7AntiVirusTrojan ( 00502c261 )
Elasticmalicious (high confidence)
DrWebTrojan.Encoder.24094
CynetMalicious (score: 100)
CAT-QuickHealTrojan.Chapak.ZZ6
ALYacTrojan.Ransom.BWW
CylanceUnsafe
ZillyaTrojan.Kryptik.Win32.1514054
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_100% (W)
AlibabaTrojan:Win32/Kryptik.dc79f87d
K7GWTrojan ( 00502c261 )
Cybereasonmalicious.b02a66
SymantecML.Attribute.HighConfidence
ESET-NOD32a variant of Win32/Kryptik.GBFX
APEXMalicious
AvastWin32:Trojan-gen
KasperskyUDS:Trojan.Win32.Chapak
BitDefenderTrojan.Ransom.BWW
NANO-AntivirusTrojan.Win32.Encoder.ewnccj
MicroWorld-eScanTrojan.Ransom.BWW
TencentWin32.Adware.Generic.Szlr
Ad-AwareTrojan.Ransom.BWW
SophosMal/GandCrab-D
ComodoTrojWare.Win32.Crypt.BF@7gchou
BitDefenderThetaGen:NN.ZexaF.34738.imKfaWsV2Yn
McAfee-GW-EditionBehavesLike.Win32.BadFile.cc
FireEyeGeneric.mg.58f3cacb02a66d8d
EmsisoftTrojan-Ransom.GlobeImposter (A)
SentinelOneStatic AI – Malicious PE
JiangminTrojan.Scar.lan
eGambitUnsafe.AI_Score_96%
Antiy-AVLTrojan/Generic.ASMalwS.23C6887
KingsoftWin32.Troj.Generic_a.a.(kcloud)
MicrosoftTrojan:Win32/Occamy.C46
AegisLabAdware.Win32.Generic.2!c
ZoneAlarmHEUR:Trojan.Win32.Generic
GDataWin32.Trojan-Ransom.GlobeImposter.L
TACHYONRansom/W32.Crypmod.238080
McAfeeArtemis!58F3CACB02A6
MAXmalware (ai score=100)
VBA32TrojanRansom.Purgen
MalwarebytesTrojan.MalPack
PandaTrj/CI.A
RisingRansom.GlobeImposter!1.AF70 (CLASSIC)
YandexTrojan.GenAsa!94AEw0RPDvA
IkarusTrojan.Crypt
FortinetW32/Kryptik.FYNO!tr
AVGWin32:Trojan-gen
Paloaltogeneric.ml

How to remove UDS:Trojan.Win32.Chapak 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 UDS:Trojan.Win32.Chapak 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 UDS:Trojan.Win32.Chapak 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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