Trojan:Win32/Estiwir.A
Matthew Alvarez
Updated on February 20, 2026
What is Trojan:Win32/Estiwir.A infection?
In this article you will find regarding the meaning of Trojan:Win32/Estiwir.A and also its adverse influence on your computer. Such ransomware are a type of malware that is elaborated by on-line scams to demand paying the ransom money by a target.
In the majority of the cases, Trojan:Win32/Estiwir.A virus will certainly instruct its victims to launch funds move for the function of counteracting the amendments that the Trojan infection has actually introduced to the victim’s tool.
Trojan:Win32/Estiwir.A Summary
These adjustments can be as complies with:
- Executable code extraction;
- Creates RWX memory;
- Possible date expiration check, exits too soon after checking local time;
- Loads a driver;
- Expresses interest in specific running processes;
- Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
- The binary likely contains encrypted or compressed data.;
- Network activity contains more than one unique useragent.;
- Installs itself for autorun at Windows startup;
- Exhibits possible ransomware file modification behavior;
- Creates a hidden or system file;
- Likely virus infection of existing system binary;
- Attempts to create or modify a Browser Helper Object;
- Attempts to modify proxy settings;
- Anomalous binary characteristics;
- Clears web history;
- Ciphering the documents located on the victim’s hard drive — so the target can no longer utilize the data;
- Preventing routine access to the sufferer’s workstation;
Trojan:Win32/Estiwir.A
The most common networks through which Trojan:Win32/Estiwir.A Ransomware Trojans are injected are:
- By ways of phishing emails;
- As a repercussion of user ending up on a resource that hosts a harmful software;
As soon as the Trojan is efficiently injected, it will either cipher the data on the target’s computer or protect against the gadget from functioning in a correct manner – while also positioning a ransom note that states the requirement for the victims to effect the payment for the function of decrypting the documents or bring back the file system back to the preliminary problem. In many instances, the ransom money note will show up when the customer reboots the PC after the system has actually already been harmed.
Trojan:Win32/Estiwir.A distribution networks.
In numerous edges of the world, Trojan:Win32/Estiwir.A expands by jumps as well as bounds. Nonetheless, the ransom notes and techniques of obtaining the ransom money quantity may vary depending on certain regional (local) setups. The ransom money notes and methods of extorting the ransom quantity may differ depending on particular regional (regional) settings.
As an example:
Faulty signals concerning unlicensed software application.
In particular areas, the Trojans commonly wrongfully report having actually identified some unlicensed applications made it possible for on the victim’s device. The alert then requires the individual to pay the ransom.
Faulty statements concerning prohibited content.
In countries where software application piracy is less preferred, this approach is not as reliable for the cyber scams. Additionally, the Trojan:Win32/Estiwir.A popup alert may falsely declare to be deriving from a police institution and also will report having situated kid pornography or various other unlawful data on the gadget.
Trojan:Win32/Estiwir.A popup alert may wrongly claim to be acquiring from a regulation enforcement organization and also will certainly report having located kid porn or other prohibited information on the device. The alert will in a similar way contain a requirement for the user to pay the ransom money.
Technical details
File Info:
crc32: 6FC99E97md5: 2fd9da52dee49d439422c96aab77c1b7name: 2FD9DA52DEE49D439422C96AAB77C1B7.mlwsha1: daac775b363034b3cc7edbb13d1f756eb58af349sha256: fc800b79f5155f2a878a002903a350e57358cccdded3def25d5ef06ca74c3e75sha512: e22489d15723fcd9ab8915f9a785295e16a1cc334267036d46d8da7fb5f1cc36d3879f3889718ca8bf80b01c830849d8780ca37b8b0d76ac2edfee6136afc9f8ssdeep: 6144:jWyskKAM2KMvyb2Bt8ytp4aBXDgLkoSrb40t0UFu:jWysjAvyb2BpD4aBXDg4owbNtPutype: PE32 executable (GUI) Intel 80386, for MS WindowsVersion Info:
0: [No Data]
Trojan:Win32/Estiwir.A also known as:
| GridinSoft | Trojan.Ransom.Gen |
| Bkav | W32.AIDetect.malware1 |
| K7AntiVirus | Password-Stealer ( 0040f4fd1 ) |
| Elastic | malicious (high confidence) |
| DrWeb | Trojan.NtRootKit.16051 |
| Cynet | Malicious (score: 100) |
| CAT-QuickHeal | TrojPWS.OnLineGames.AH4 |
| ALYac | Packer.Malware.NSAnti.D |
| Cylance | Unsafe |
| Sangfor | Trojan.Win32.Save.a |
| CrowdStrike | win/malicious_confidence_100% (W) |
| K7GW | Password-Stealer ( 0040f4fd1 ) |
| Cybereason | malicious.2dee49 |
| Baidu | Win32.Trojan-PSW.OnlineGames.a |
| Cyren | W32/OnlineGames.JH.gen!Eldorado |
| Symantec | Infostealer.Gampass |
| ESET-NOD32 | Win32/Pacex.Gen |
| APEX | Malicious |
| Avast | Win32:Kamso [Trj] |
| Kaspersky | HEUR:Trojan.Win32.Generic |
| BitDefender | Packer.Malware.NSAnti.D |
| NANO-Antivirus | Trojan.Win32.NSAnti.fthc |
| MicroWorld-eScan | Packer.Malware.NSAnti.D |
| Tencent | Trojan.Win32.Magania.bbb |
| Ad-Aware | Packer.Malware.NSAnti.D |
| Sophos | ML/PE-A + Mal/TDSSPack-AH |
| Comodo | TrojWare.Win32.Pacex.C@51qesd |
| BitDefenderTheta | AI:Packer.ACB80E3D1E |
| VIPRE | Worm.Win32.Taterf.b (v) |
| TrendMicro | TROJ_ESTIWIR.SM |
| McAfee-GW-Edition | BehavesLike.Win32.VirRansom.dc |
| FireEye | Generic.mg.2fd9da52dee49d43 |
| Emsisoft | Packer.Malware.NSAnti.D (B) |
| SentinelOne | Static AI – Malicious PE |
| Jiangmin | Trojan/Generic.ayvur |
| Avira | TR/Crypt.XPACK.Gen |
| eGambit | Unsafe.AI_Score_94% |
| Antiy-AVL | Trojan/Generic.ASMalwS.373EB1 |
| Microsoft | Trojan:Win32/Estiwir.A |
| Arcabit | Packer.Malware.NSAnti.D |
| GData | Packer.Malware.NSAnti.D |
| AhnLab-V3 | Win-Trojan/Wgames.Gen |
| Acronis | suspicious |
| McAfee | Artemis!2FD9DA52DEE4 |
| MAX | malware (ai score=85) |
| VBA32 | BScope.Trojan.SvcHorse.01643 |
| Panda | Trj/Genetic.gen |
| TrendMicro-HouseCall | TROJ_ESTIWIR.SM |
| Rising | Malware.Heuristic!ET#100% (RDMK:cmRtazr1q3yd9cj61U3Bdh4YdTCI) |
| Ikarus | Worm.Win32.AutoRun |
| MaxSecure | Trojan.Malware.300983.susgen |
| Fortinet | W32/OnlineGames!tr |
| AVG | Win32:Kamso [Trj] |
| Paloalto | generic.ml |
How to remove Trojan:Win32/Estiwir.A 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-MalwareRun 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.
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.
Press “Install” button.
Once installed, Anti-Malware will automatically run.
Wait for the Anti-Malware scan to complete.
GridinSoft Anti-Malware will automatically start scanning your system for Trojan:Win32/Estiwir.A 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.
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.
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 Anti-Malware
If the guide doesn’t help you to remove Trojan:Win32/Estiwir.A you can always ask me in the comments for getting help.
References
- GridinSoft Anti-Malware Review from HowToFix site:
- More information about GridinSoft products:
