Win32/PowerLoader.A

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey

What is Win32/PowerLoader.A infection?

In this post you will certainly discover concerning the meaning of Win32/PowerLoader.A and its adverse influence on your computer system. Such ransomware are a form of malware that is clarified by on-line frauds to require paying the ransom money by a target.

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Most of the cases, Win32/PowerLoader.A infection will certainly instruct its targets to initiate funds transfer for the purpose of counteracting the changes that the Trojan infection has introduced to the sufferer’s gadget.

Win32/PowerLoader.A Summary

These alterations 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.
  • Injection with CreateRemoteThread in a remote process;
  • 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.
  • 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.

  • Code injection with CreateRemoteThread in a remote process;
  • 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 copy of itself;
  • Collects information to fingerprint the system. There are behavioral human characteristics that can be used to digitally identify a person to grant access to systems, devices, or data. Unlike passwords and verification codes, fingerprints are fundamental parts of user’s identities. Among the threats blocked on biometric data processing and storage systems is spyware, the malware used in phishing attacks (mostly spyware downloaders and droppers), ransomware, and Banking Trojans as posing the greatest danger.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the files located on the victim’s disk drive — so the sufferer can no longer use the information;
  • Preventing regular accessibility to the victim’s workstation;

Win32/PowerLoader.A

The most normal channels whereby Win32/PowerLoader.A Trojans are infused are:

  • By ways of phishing e-mails;
  • As a consequence of customer ending up on a source that organizes a harmful software;

As quickly as the Trojan is successfully injected, it will either cipher the information on the target’s PC or stop the device from functioning in an appropriate manner – while additionally positioning a ransom money note that states the need for the targets to impact the settlement for the objective of decrypting the documents or recovering the file system back to the preliminary condition. In the majority of circumstances, the ransom note will turn up when the customer restarts the PC after the system has actually currently been damaged.

Win32/PowerLoader.A circulation channels.

In numerous corners of the globe, Win32/PowerLoader.A expands by leaps as well as bounds. However, the ransom money notes and also methods of obtaining the ransom money quantity may vary depending upon specific regional (local) settings. The ransom money notes and tricks 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 areas, the Trojans typically wrongfully report having found some unlicensed applications allowed on the sufferer’s device. The sharp after that demands the user to pay the ransom.

    Faulty statements about prohibited material.

    In countries where software application piracy is less preferred, this method is not as efficient for the cyber frauds. Additionally, the Win32/PowerLoader.A popup alert may wrongly declare to be deriving from a police establishment and will report having located youngster porn or various other illegal data on the device.

    Win32/PowerLoader.A popup alert might incorrectly assert to be obtaining from a regulation enforcement organization and will certainly report having situated child pornography or various other prohibited information on the tool. The alert will likewise contain a requirement for the user to pay the ransom money.

Technical details

File Info:

crc32: 5621FC29
md5: b26435a526ed133d095e26aa88664b0f
name: B26435A526ED133D095E26AA88664B0F.mlw
sha1: d260d24a8246a5306d3977f5e94592e2516c03df
sha256: 91f911450e53bba3abe34ead9d70bd37417ccf64b61eb318988412c8f9a211ec
sha512: 57d834f8af052867602536212f3501e07201e632448a0744f5f345c3e7c3ac2f94c4b74755875787b52c4f126a6bece1879731bdb1295ff1f65ec36bc1552324
ssdeep: 768:q+srnRucaDoWpviGgnONRWPc5umOu27v1MI+QeLwMhbbP2fsL44VLLX:ZshaDoWpvigVumz27vmpNhHP2WNL
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/PowerLoader.A also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
K7AntiVirus Riskware ( 0040eff71 )
Elastic malicious (high confidence)
DrWeb Trojan.Inject1.25462
Malwarebytes Malware.Heuristic.1001
Zillya Trojan.Blocker.Win32.8879
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
BitDefender Trojan.Brsecmon.1
Cybereason malicious.526ed1
Cyren W32/Trojan.LPCU-3479
Symantec ML.Attribute.HighConfidence
ESET-NOD32 Win32/PowerLoader.A
APEX Malicious
Cynet Malicious (score: 100)
Kaspersky Trojan-Ransom.Win32.Blocker.buri
Alibaba Ransom:Win32/Blocker.c672ed5b
Tencent Win32.Trojan.Blocker.Pdls
Ad-Aware Trojan.Brsecmon.1
Sophos Mal/Generic-S
BitDefenderTheta Gen:NN.ZexaF.34628.gy0@a0F44Qki
VIPRE Trojan.Win32.Generic!BT
TrendMicro TROJ_SPNR.16GT13
McAfee-GW-Edition Artemis!Trojan
Emsisoft Trojan.Brsecmon.1 (B)
SentinelOne Static AI – Suspicious PE
Webroot W32.Rogue.Gen
Avira TR/Crypt.ZPACK.Gen2
eGambit Unsafe.AI_Score_99%
Antiy-AVL Trojan[Ransom]/Win32.Blocker
Kingsoft Win32.Troj.Generic_a.a.(kcloud)
Arcabit Trojan.Brsecmon.1
AegisLab Trojan.Win32.Generic.kYPw
ZoneAlarm Trojan-Ransom.Win32.Blocker.buri
AhnLab-V3 Spyware/Win32.Zbot.C215560
VBA32 TrojanDownloader.Agent
MAX malware (ai score=100)
Yandex Trojan.GenAsa!t2majCCr0Tk
Ikarus Trojan.Spy.ZBot
Paloalto generic.ml
Qihoo-360 Win32/Ransom.Blocker.HxMB6PYA

How to remove Win32/PowerLoader.A virus?

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 Win32/PowerLoader.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 Win32/PowerLoader.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/comparison

About the author

Robert Bailey

I'm Robert Bailey, a passionate Security Engineer with a deep fascination for all things related to malware, reverse engineering, and white hat ethical hacking.

As a white hat hacker, I firmly believe in the power of ethical hacking to bolster security measures. By identifying vulnerabilities and providing solutions, I contribute to the proactive defense of digital infrastructures.

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