Virus:Win32/Frostui.A

What is Virus:Win32/Frostui.A infection?

In this short article you will discover regarding the meaning of Virus:Win32/Frostui.A and its negative effect on your computer system. Such ransomware are a type of malware that is clarified by on-line scams to demand paying the ransom money by a target.

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In the majority of the situations, Virus:Win32/Frostui.A virus will advise its victims to initiate funds move for the objective of counteracting the changes that the Trojan infection has actually introduced to the target’s tool.

Virus:Win32/Frostui.A Summary

These modifications can be as complies with:

  • 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.
  • Attempts to connect to a dead IP:Port (1 unique times);
  • 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.
  • Starts servers listening on 0.0.0.0:40118;
  • Reads data out of its own binary image. The trick that allows the malware to read data out of your computer’s memory.

    Everything you run, type, or click on your computer goes through the memory. This includes passwords, bank account numbers, emails, and other confidential information. With this vulnerability, there is the potential for a malicious program to read that data.

  • A process created a hidden window;
  • Drops a binary and executes it. Trojan-Downloader installs itself to the system and waits until an Internet connection becomes available to connect to a remote server or website in order to download additional malware onto the infected computer.
  • Unconventionial binary language: Chinese (Simplified);
  • Uses Windows utilities for basic functionality;
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config;
  • Installs itself for autorun at Windows startup. There is simple tactic using the Windows startup folder located at:
    C:\Users\[user-name]\AppData\Roaming\Microsoft\Windows\StartMenu\Programs\Startup. Shortcut links (.lnk extension) placed in this folder will cause Windows to launch the application each time [user-name] logs into Windows.

    The registry run keys perform the same action, and can be located in different locations:

    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
  • Creates a hidden or system file. The malware adds the hidden attribute to every file and folder on your system, so it appears as if everything has been deleted from your hard drive.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers situated on the victim’s disk drive — so the target 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.

Virus:Win32/Frostui.A

One of the most typical channels through which Virus:Win32/Frostui.A Trojans are infused are:

  • By ways of phishing emails;
  • As a repercussion of customer ending up on a source that hosts a malicious software application;

As soon as the Trojan is effectively injected, it will certainly either cipher the data on the target’s PC or prevent the tool from working in a proper manner – while likewise putting a ransom note that mentions the need for the victims to effect the repayment for the function of decrypting the documents or bring back the documents system back to the first problem. In a lot of instances, the ransom note will turn up when the client reboots the PC after the system has actually currently been harmed.

Virus:Win32/Frostui.A distribution channels.

In different edges of the world, Virus:Win32/Frostui.A grows by leaps as well as bounds. However, the ransom money notes as well as techniques of extorting the ransom amount may differ relying on specific local (regional) setups. The ransom notes and techniques of extorting the ransom money quantity may differ depending on specific neighborhood (local) settings.

Ransomware injection

For example:

    Faulty signals regarding unlicensed software.

    In particular locations, the Trojans usually wrongfully report having actually detected some unlicensed applications enabled on the sufferer’s gadget. The sharp then requires the individual to pay the ransom.

    Faulty declarations concerning prohibited web content.

    In countries where software application piracy is less popular, this approach is not as efficient for the cyber fraudulences. Additionally, the Virus:Win32/Frostui.A popup alert might falsely claim to be originating from a law enforcement establishment and will report having located kid porn or other prohibited data on the tool.

    Virus:Win32/Frostui.A popup alert might incorrectly claim to be deriving from a regulation enforcement institution and also will certainly report having located youngster pornography or various other unlawful data on the tool. The alert will likewise consist of a demand for the individual to pay the ransom money.

Technical details

File Info:

crc32: D5266ED4
md5: ec0e613abba486b597d18e7318dff64f
name: EC0E613ABBA486B597D18E7318DFF64F.mlw
sha1: f609528eca493a15ef0c338fa6276086255a3bac
sha256: 1aa221ec2ab4baeda73c6c825a0ef43c4baa598b1e9d119e7c2626d265e793c6
sha512: d332f09762c492fc54e89263a3c0834bccc71a0cae4419f84230b42ed4625dc0634592e0b13dbf21f8d7eb2a1df6d3a17d471188e0df5eb6b4c2b161589cbf16
ssdeep: 768:zJLmlmGtKHKtK6krYLVvAfzlY7TOvvRy6/q6/4wNAYnJrrqQbuuGG+9O1oNsDKiV:zEyoVviY7X8q81AYnBuuGG+6j2iOmxl
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright 2012
CompanyName: sjz
FileVersion: 6.1.7600.16385
FileDescription: x6c34x5370x6807x7b7ex7cfbx7edf
ProductVersion: 6.1.7600.16385
Translation: 0x0804 0x0000

Virus:Win32/Frostui.A also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
DrWeb Trojan.Siggen6.32260
MicroWorld-eScan Win32.Prepender.Amber.A
FireEye Generic.mg.ec0e613abba486b5
ALYac Win32.Prepender.Amber.A
Malwarebytes Malware.AI.263307070
VIPRE Virus.Win32.Frostui.a (v)
AegisLab Trojan.Win32.Crypmodadv.miXj
Sangfor Trojan.Win32.Save.a
K7AntiVirus Riskware ( 0040eff71 )
BitDefender Win32.Prepender.Amber.A
K7GW Riskware ( 0040eff71 )
Cybereason malicious.abba48
BitDefenderTheta AI:Packer.E591925D1D
Cyren W32/Heuristic-114!Eldorado
Symantec SMG.Heur!gen
APEX Malicious
Avast Win32:Malware-gen
ClamAV Win.Trojan.Agent-1266464
Kaspersky Trojan-Ransom.Win32.Crypmod.xvd
Alibaba Virus:Win32/Crypmod.466774c9
NANO-Antivirus Trojan.Win32.Crypmodadv.dqwgmq
Rising Virus.Frostui!1.A12D (CLOUD)
Ad-Aware Win32.Prepender.Amber.A
Sophos Mal/Generic-R + W32/VirRnsm-D
Comodo TrojWare.Win32.Crypmodadv.IIQ@5pkka2
F-Secure Dropper.DR/MicroJoiner.Gen
Baidu Win32.Trojan.MicroJoiner.a
Zillya Trojan.Encoder.Win32.51
TrendMicro Virus.Win32.AMBER.JPG
McAfee-GW-Edition BehavesLike.Win32.Generic.lh
Emsisoft Win32.Prepender.Amber.A (B)
GData Win32.Prepender.Amber.A
Jiangmin Trojan/Crypmodadv.r
eGambit Trojan.Generic
Avira DR/MicroJoiner.Gen
Antiy-AVL Trojan[Ransom]/Win32.Crypmodadv.fe
Arcabit Win32.Prepender.Amber.A
ZoneAlarm Trojan-Ransom.Win32.Crypmod.xvd
Microsoft Virus:Win32/Frostui.A
Cynet Malicious (score: 100)
AhnLab-V3 Dropper/Win32.FakeDoc.R137847
McAfee W32/VirRansom.a
MAX malware (ai score=86)
VBA32 Hoax.Crypmodadv
Panda Trj/Genetic.gen
ESET-NOD32 a variant of Win32/Agent.NCH
TrendMicro-HouseCall Virus.Win32.AMBER.JPG
Tencent Trojan.Win32.Crypmodadv.xvd
Yandex Trojan.GenAsa!rlqCHPJ+nvU
SentinelOne Static AI – Malicious PE
MaxSecure Trojan.Ransom.Crypmod.xvd
Fortinet W32/Crypmodadv.FE!tr
AVG Win32:Malware-gen
Paloalto generic.ml
CrowdStrike win/malicious_confidence_100% (W)
Qihoo-360 Virus.Win32.Crypmodadv.A

How to remove Virus:Win32/Frostui.A ransomware?

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 Virus:Win32/Frostui.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.

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 Virus:Win32/Frostui.A 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/products/

About the author

Robert Bailey

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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