PUP.Optional.ExtensionInstaller
Emily Beck
Updated on March 15, 2026
What is PUP.Optional.ExtensionInstaller infection?
In this short article you will discover concerning the definition of PUP.Optional.ExtensionInstaller and its unfavorable influence on your computer system. Such ransomware are a kind of malware that is elaborated by on-line frauds to require paying the ransom money by a sufferer.
In the majority of the cases, PUP.Optional.ExtensionInstaller ransomware will certainly advise its targets to initiate funds transfer for the purpose of reducing the effects of the modifications that the Trojan infection has presented to the target’s gadget.
PUP.Optional.ExtensionInstaller Summary
These alterations can be as adheres to:
- A process attempted to delay the analysis task.;
- Reads data out of its own binary image;
- Drops a binary and executes it;
- Network activity detected but not expressed in API logs;
- Anomalous binary characteristics;
- Ciphering the files found on the target’s disk drive — so the target can no more make use of the information;
- Preventing regular access to the sufferer’s workstation;
Related domains:
| z.whorecord.xyz | Ransom:Win32/StopCrypt!ml |
| a.tomx.xyz | Ransom:Win32/StopCrypt!ml |
PUP.Optional.ExtensionInstaller
One of the most normal channels where PUP.Optional.ExtensionInstaller are infused are:
- By ways of phishing e-mails;
- As a repercussion of customer ending up on a resource that organizes a malicious software program;
As soon as the Trojan is efficiently infused, it will certainly either cipher the information on the victim’s PC or prevent the gadget from functioning in an appropriate fashion – while also positioning a ransom note that points out the need for the targets to effect the repayment for the objective of decrypting the files or bring back the file system back to the preliminary condition. In the majority of instances, the ransom money note will certainly turn up when the client restarts the COMPUTER after the system has actually already been harmed.
PUP.Optional.ExtensionInstaller distribution channels.
In different corners of the globe, PUP.Optional.ExtensionInstaller grows by leaps and also bounds. Nevertheless, the ransom notes and techniques of extorting the ransom quantity might vary depending upon particular neighborhood (local) settings. The ransom money notes and also methods of extorting the ransom money amount might vary depending on certain local (regional) setups.
As an example:
Faulty informs regarding unlicensed software.
In specific locations, the Trojans typically wrongfully report having actually found some unlicensed applications made it possible for on the victim’s device. The alert then requires the user to pay the ransom.
Faulty statements concerning unlawful material.
In nations where software piracy is much less prominent, this technique is not as efficient for the cyber fraudulences. Additionally, the PUP.Optional.ExtensionInstaller popup alert might falsely declare to be stemming from a law enforcement institution and also will certainly report having situated youngster porn or various other illegal data on the gadget.
PUP.Optional.ExtensionInstaller popup alert may falsely assert to be acquiring from a law enforcement organization and will report having situated child pornography or various other illegal data on the device. The alert will similarly have a requirement for the customer to pay the ransom.
Technical details
File Info:
crc32: BC189C17md5: 5b9a29ce81bd15c850f931a3b96a4f36name: 5B9A29CE81BD15C850F931A3B96A4F36.mlwsha1: 8fff5695132a42d73bb98b2bea44a2874fa4dfd4sha256: 2df040f0eb71acf8d02e783def03191387eacb70f43a8048e1b8e2c672914b9csha512: 29a5a75d9b492f9814aa43a4baba98548bc602e6f436be08ca0b8f2432aaa44887eb6a06cbb6bb462cd713159d27210c55382792bd2725c2755dcb3fd47ff6d1ssdeep: 12288:dq/JY0TTiF9j49cDLrV9MiEd9Wjhtma+rZJ/VYlsKCEd9Wjhtma+rZJ/VYlsKCr:ey14ALrVGyhT+HGuKJyhT+HGuK0type: PE32 executable (GUI) Intel 80386, for MS Windows, Nullsoft Installer self-extracting archiveVersion Info:
LegalCopyright: QwcFileDescription: ZppTranslation: 0x0409 0x04b0
PUP.Optional.ExtensionInstaller also known as:
| GridinSoft | Trojan.Ransom.Gen |
| Bkav | W32.AIDetect.malware1 |
| K7AntiVirus | Trojan ( 005212511 ) |
| Lionic | Trojan.Win32.Generic.4!c |
| Elastic | malicious (high confidence) |
| Cynet | Malicious (score: 100) |
| ALYac | Dropped:Trojan.Generic.22766687 |
| K7GW | Trojan ( 005212511 ) |
| Cybereason | malicious.e81bd1 |
| Symantec | ML.Attribute.HighConfidence |
| ESET-NOD32 | a variant of Win32/SearchPage.B |
| APEX | Malicious |
| Avast | Win32:Malware-gen |
| BitDefender | Dropped:Trojan.Generic.22766687 |
| NANO-Antivirus | Trojan.Win32.SearchPage.ewxwwo |
| MicroWorld-eScan | Dropped:Trojan.Generic.22766687 |
| Tencent | Win32.Trojan.Generic.Syik |
| Ad-Aware | Dropped:Trojan.Generic.22766687 |
| Sophos | Mal/Generic-S |
| Comodo | Malware@#ndwbyb7m7via |
| BitDefenderTheta | Gen:NN.ZexaF.34170.PC0@aGq0@Tdi |
| VIPRE | Trojan.Win32.Generic!BT |
| McAfee-GW-Edition | BehavesLike.Win32.ICLoader.jc |
| FireEye | Generic.mg.5b9a29ce81bd15c8 |
| Emsisoft | Dropped:Trojan.Generic.22766687 (B) |
| SentinelOne | Static AI – Malicious PE |
| Avira | HEUR/AGEN.1117983 |
| Microsoft | Ransom:Win32/StopCrypt!ml |
| GData | Dropped:Trojan.Generic.22766687 |
| McAfee | Artemis!5B9A29CE81BD |
| MAX | malware (ai score=80) |
| Malwarebytes | PUP.Optional.ExtensionInstaller |
| Panda | Trj/CI.A |
| Rising | Trojan.Generic@ML.86 (RDML:7povfAkN8U/YLvxffBUYpQ) |
| Yandex | Trojan.SearchPage!fNeOPDNAXVw |
| Fortinet | W32/SearchPage.B!tr |
| AVG | Win32:Malware-gen |
| Paloalto | generic.ml |
How to remove PUP.Optional.ExtensionInstaller ransomware?
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 PUP.Optional.ExtensionInstaller 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 PUP.Optional.ExtensionInstaller you can always ask me in the comments for getting help.
References
- GridinSoft Anti-Malware Review from HowToFix site:
- More information about GridinSoft products:
