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The Daily Insight

Backdoor:Win32/Zegost.AD

Author

James White

Updated on April 05, 2026

What is Backdoor:Win32/Zegost.AD infection?

In this short article you will certainly find concerning the interpretation of Backdoor:Win32/Zegost.AD and its adverse impact on your computer system. Such ransomware are a kind of malware that is specified by on-line fraudulences to require paying the ransom money by a target.

Most of the situations, Backdoor:Win32/Zegost.AD infection will certainly advise its sufferers to start funds transfer for the function of neutralizing the amendments that the Trojan infection has actually presented to the target’s tool.

Backdoor:Win32/Zegost.AD Summary

These adjustments 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.
  • Possible date expiration check, exits too soon after checking local time;
  • Unconventionial language used in binary resources: Chinese (Simplified);
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers located on the sufferer’s hard disk drive — so the victim can no more make use of the data;
  • Preventing regular accessibility to the victim’s workstation;

Backdoor:Win32/Zegost.AD

One of the most regular networks through which Backdoor:Win32/Zegost.AD Trojans are injected are:

  • By methods of phishing emails;
  • As a repercussion of individual winding up on a source that organizes a destructive software;

As quickly as the Trojan is efficiently infused, it will certainly either cipher the data on the target’s computer or protect against the gadget from working in a correct way – while likewise putting a ransom money note that states the need for the sufferers to impact the repayment for the function of decrypting the records or recovering the file system back to the initial problem. In the majority of circumstances, the ransom note will come up when the client restarts the COMPUTER after the system has actually already been harmed.

Backdoor:Win32/Zegost.AD circulation networks.

In numerous edges of the globe, Backdoor:Win32/Zegost.AD grows by leaps and also bounds. Nevertheless, the ransom notes and also tricks of obtaining the ransom money quantity may vary relying on specific neighborhood (regional) setups. The ransom money notes and methods of extorting the ransom quantity may differ depending on specific neighborhood (local) settings.

Ransomware injection

For example:

    Faulty informs concerning unlicensed software program.

    In specific locations, the Trojans frequently wrongfully report having detected some unlicensed applications made it possible for on the victim’s tool. The sharp after that demands the user to pay the ransom.

    Faulty declarations concerning illegal material.

    In countries where software application piracy is much less popular, this method is not as reliable for the cyber fraudulences. Additionally, the Backdoor:Win32/Zegost.AD popup alert may wrongly assert to be originating from a police establishment and also will certainly report having situated youngster pornography or various other illegal data on the tool.

    Backdoor:Win32/Zegost.AD popup alert may incorrectly claim to be deriving from a law enforcement institution and will report having situated kid porn or various other prohibited data on the tool. The alert will similarly consist of a demand for the customer to pay the ransom money.

Technical details

File Info:

crc32: 502687FEmd5: c85ea9be1cf342f072677ab1869d9a61name: C85EA9BE1CF342F072677AB1869D9A61.mlwsha1: 54dfc970b5599e4c7ec3c98518619b63a21227d0sha256: 7472818d62beffdf0bd156ffee188d43add16b213fa9596d012f23f9e8e95f3bsha512: ff5535f4f08e0007abcad6961af9844ddd78bdf2e3b749df59e05b8ab6e112231eff2b6a6b61ec39a82df1f977db3fa18350cb3fe9f7b04d0d75061dce72bb5assdeep: 6144:B06geju9FR1eTboYeFVixm2VruSNRLiYfLpe7PYoNcS:BJgej8LYEsluS6DYLStype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Backdoor:Win32/Zegost.AD also known as:

GridinSoftTrojan.Ransom.Gen
K7AntiVirusTrojan ( 0052c8a31 )
Elasticmalicious (high confidence)
DrWebTrojan.Click2.29947
CynetMalicious (score: 100)
ALYacGen:Trojan.Heur.JP.py0@aG0AoLjj
CylanceUnsafe
ZillyaTrojan.Menti.Win32.41067
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_90% (D)
AlibabaBackdoor:Win32/Zegost.1a28567d
K7GWTrojan ( 0052c8a31 )
Cybereasonmalicious.e1cf34
SymantecML.Attribute.HighConfidence
APEXMalicious
AvastWin32:Malware-gen
ClamAVWin.Trojan.Zegost-9769410-0
KasperskyHEUR:Trojan.Win32.Generic
BitDefenderGen:Trojan.Heur.JP.py0@aG0AoLjj
NANO-AntivirusVirus.Win32.Gen-Crypt.ccnc
MicroWorld-eScanGen:Trojan.Heur.JP.py0@aG0AoLjj
TencentBackdoor.Win32.Gh0st.x
Ad-AwareGen:Trojan.Heur.JP.py0@aG0AoLjj
SophosML/PE-A + Mal/Zegost-AF
BitDefenderThetaAI:Packer.6CA31A731F
VIPRETrojan.Win32.Generic!BT
McAfee-GW-EditionBackDoor-EXZ
FireEyeGeneric.mg.c85ea9be1cf342f0
EmsisoftGen:Trojan.Heur.JP.py0@aG0AoLjj (B)
SentinelOneStatic AI – Malicious PE
JiangminTrojan/Generic.afmny
WebrootW32.Malware.Gen
AviraHEUR/AGEN.1120981
eGambitUnsafe.AI_Score_97%
KingsoftWin32.Troj.Undef.(kcloud)
MicrosoftBackdoor:Win32/Zegost.AD
AegisLabTrojan.Win32.Menti.4!c
GDataGen:Trojan.Heur.JP.py0@aG0AoLjj
AhnLab-V3Trojan/Win32.Jorik.R26140
Acronissuspicious
McAfeeBackDoor-EXZ
MAXmalware (ai score=99)
VBA32BScope.Trojan.StartServ
PandaTrj/CI.A
RisingTrojan.Zegost!1.65A1 (CLOUD)
YandexTrojan.GenAsa!14yFcno/IJo
IkarusBackdoor.Win32.Zegost
FortinetW32/Filecoder.FV!tr.ransom
AVGWin32:Malware-gen
Paloaltogeneric.ml
Qihoo-360Win32/Backdoor.Zegost.HxMB0fsA

How to remove Backdoor:Win32/Zegost.AD virus?

There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft">2.

Download GridinSoft Anti-Malware.

You can download GridinSoft Anti-Malware by clicking the button below:

Download GridinSoft Anti-Malware

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 Backdoor:Win32/Zegost.AD 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 Backdoor:Win32/Zegost.AD you can always ask me in the comments for getting help.

References

  1. GridinSoft Anti-Malware Review from HowToFix site:
  2. More information about GridinSoft products: