TrojanDropper:Win32/Sirefef.B
Emily Beck
Updated on February 20, 2026
What is TrojanDropper:Win32/Sirefef.B infection?
In this short article you will locate about the interpretation of TrojanDropper:Win32/Sirefef.B as well as its negative impact on your computer. Such ransomware are a type of malware that is clarified by on the internet fraudulences to demand paying the ransom money by a sufferer.
Most of the situations, TrojanDropper:Win32/Sirefef.B infection will certainly instruct its targets to start funds move for the objective of reducing the effects of the amendments that the Trojan infection has actually introduced to the target’s gadget.
TrojanDropper:Win32/Sirefef.B Summary
These adjustments can be as adheres to:
- The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
- 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 victim’s hard drive — so the sufferer can no longer use 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.
| z.whorecord.xyz | Win32/RansomVid.A!ISIgeneric |
| a.tomx.xyz | Win32/RansomVid.A!ISIgeneric |
TrojanDropper:Win32/Sirefef.B
The most normal networks through which TrojanDropper:Win32/Sirefef.B Ransomware are injected are:
- By ways of phishing e-mails;
- As an effect of user winding up on a resource that holds a malicious software program;
As quickly as the Trojan is effectively injected, it will either cipher the information on the sufferer’s computer or stop the tool from operating in an appropriate way – while additionally putting a ransom note that discusses the requirement for the sufferers to impact the settlement for the function of decrypting the files or recovering the documents system back to the first problem. In a lot of instances, the ransom note will come up when the customer reboots the COMPUTER after the system has already been damaged.
TrojanDropper:Win32/Sirefef.B distribution networks.
In different edges of the world, TrojanDropper:Win32/Sirefef.B grows by jumps and bounds. Nevertheless, the ransom money notes and tricks of extorting the ransom money quantity might vary depending upon particular neighborhood (regional) setups. The ransom money notes and techniques of obtaining the ransom quantity may differ depending on specific neighborhood (local) setups.
For example:
Faulty alerts about unlicensed software program.
In particular areas, the Trojans frequently wrongfully report having identified some unlicensed applications made it possible for on the target’s device. The sharp after that demands the individual to pay the ransom money.
Faulty statements concerning prohibited material.
In nations where software program piracy is much less popular, this technique is not as efficient for the cyber frauds. Additionally, the TrojanDropper:Win32/Sirefef.B popup alert might wrongly declare to be originating from a police organization and will certainly report having located youngster porn or other illegal information on the tool.
TrojanDropper:Win32/Sirefef.B popup alert might falsely claim to be acquiring from a legislation enforcement organization as well as will report having situated child pornography or various other prohibited data on the device. The alert will similarly consist of a requirement for the customer to pay the ransom.
Technical details
File Info:
crc32: ACD8C6F8md5: 07053a51eafea82c21ea6ed5d7afd1b5name: 07053A51EAFEA82C21EA6ED5D7AFD1B5.mlwsha1: a98f68750bcc7d0282ab6a406668fb1bfa42fe75sha256: be1b1994b528f10ba372ad5c0295a4eef91621b29dff686572af5f5c0c573ee0sha512: 8c7aece82fac8fe4a9d801717ea0214436c6809fa52dca6b5a5d74cef8e9ab23e452fd33f27d5ca95c5c771a10ffe8cbe3982b731f466540ce327978a2c0801essdeep: 3072:dSKf2N9xxjcgjQFrUBX/7RVIc7BFNROGg9:8KfUjcOWrY/7jxatype: PE32 executable (GUI) Intel 80386, for MS WindowsVersion Info:
0: [No Data]
TrojanDropper:Win32/Sirefef.B also known as:
| GridinSoft | Trojan.Ransom.Gen |
| Bkav | W32.AIDetect.malware1 |
| Elastic | malicious (high confidence) |
| DrWeb | Trojan.Winlock.911 |
| MicroWorld-eScan | Gen:Heur.Krypt.22 |
| FireEye | Generic.mg.07053a51eafea82c |
| McAfee | Generic Dropper.qo |
| Cylance | Unsafe |
| VIPRE | Trojan-Spy.Win32.Zbot.gen (v) |
| AegisLab | Trojan.Win32.Generic.li22 |
| Sangfor | Trojan.Win32.Save.a |
| K7AntiVirus | Trojan ( 0013e0af1 ) |
| BitDefender | Gen:Heur.Krypt.22 |
| K7GW | Trojan ( 0013e0af1 ) |
| Cybereason | malicious.1eafea |
| BitDefenderTheta | AI:Packer.5FC0BC731F |
| Cyren | W32/Risk.UXHX-2212 |
| Symantec | Packed.Coravint!gen1 |
| TotalDefense | Win32/RansomVid.A!ISIgeneric |
| APEX | Malicious |
| Avast | Win32:FakeAlert-IH [Drp] |
| ClamAV | Win.Trojan.Ransom-4638 |
| Kaspersky | Trojan-Ransom.Win32.DigiPog.ep |
| Alibaba | Ransom:Win32/DigiPog.cb2e7eb1 |
| NANO-Antivirus | Trojan.Win32.DigiPog.bszux |
| ViRobot | Spyware.Ransom.DigiPog.120840.FN |
| Tencent | Malware.Win32.Gencirc.10b5c0f1 |
| Ad-Aware | Gen:Heur.Krypt.22 |
| Sophos | ML/PE-A + Mal/FakeAV-BW |
| Comodo | TrojWare.Win32.PkdKrap.AO@2mkvi8 |
| F-Secure | |
| TrendMicro | TROJ_BRDOLAB.SMF |
| McAfee-GW-Edition | Generic Dropper.qo |
| Emsisoft | Gen:Heur.Krypt.22 (B) |
| Ikarus | Trojan.Win32.Ransom |
| Jiangmin | Trojan/DigiPog.fn |
| Avira | TR/Crypt.XPACK.Gen |
| Antiy-AVL | Trojan[Ransom]/Win32.DigiPog |
| Kingsoft | Win32.Heur.KVM004.a.(kcloud) |
| Microsoft | TrojanDropper:Win32/Sirefef.B |
| Arcabit | Trojan.Krypt.22 |
| ZoneAlarm | Trojan-Ransom.Win32.DigiPog.ep |
| GData | Gen:Heur.Krypt.22 |
| Cynet | Malicious (score: 100) |
| AhnLab-V3 | Trojan/Win32.Digipog.R54471 |
| Acronis | suspicious |
| VBA32 | BScope.TrojanRansom.DigiPog |
| ALYac | Gen:Heur.Krypt.22 |
| MAX | malware (ai score=100) |
| Malwarebytes | Malware.AI.3620700522 |
| Panda | Trj/Ransom.Q |
| ESET-NOD32 | a variant of Win32/Kryptik.ETE |
| TrendMicro-HouseCall | TROJ_BRDOLAB.SMF |
| Rising | Ransom.DigiPog!8.5668 (CLOUD) |
| Yandex | TrojanSpy.Zbot.Gen!Pac.12 |
| SentinelOne | Static AI – Malicious PE |
| MaxSecure | Trojan.Malware.949550.susgen |
| Fortinet | W32/Krapt.AOA!tr |
| Webroot | W32.Trojan.Gen |
| AVG | Win32:FakeAlert-IH [Drp] |
| Paloalto | generic.ml |
| CrowdStrike | win/malicious_confidence_90% (D) |
| Qihoo-360 | Win32/Trojan.FakeAv.HxMB4AsA |
How to remove TrojanDropper:Win32/Sirefef.B 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 TrojanDropper:Win32/Sirefef.B 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 TrojanDropper:Win32/Sirefef.B you can always ask me in the comments for getting help.
References
- GridinSoft Anti-Malware Review from HowToFix site:
- More information about GridinSoft products:
