Ransom:Win32/Loktrom.B

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

What is Ransom:Win32/Loktrom.B infection?

In this article you will locate concerning the definition of Ransom:Win32/Loktrom.B and also its adverse effect on your computer system. Such ransomware are a kind of malware that is clarified by on-line fraudulences to require paying the ransom by a target.

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In the majority of the cases, Ransom:Win32/Loktrom.B infection will instruct its targets to launch funds transfer for the objective of counteracting the amendments that the Trojan infection has presented to the victim’s gadget.

Ransom:Win32/Loktrom.B Summary

These alterations can be as adheres to:

  • 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.
  • 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.
  • A process attempted to delay the analysis task.;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • The executable is compressed using UPX;
  • 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
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the files situated on the sufferer’s disk drive — so the sufferer can no longer use the information;
  • Preventing regular access 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.

Ransom:Win32/Loktrom.B

One of the most regular channels where Ransom:Win32/Loktrom.B are injected are:

  • By means of phishing e-mails;
  • As a repercussion of customer winding up on a resource that holds a harmful software program;

As soon as the Trojan is effectively injected, it will certainly either cipher the information on the sufferer’s PC or stop the gadget from working in an appropriate way – while likewise positioning a ransom note that discusses the demand for the victims to impact the settlement for the purpose of decrypting the files or bring back the documents system back to the first problem. In a lot of circumstances, the ransom money note will turn up when the customer restarts the PC after the system has actually already been damaged.

Ransom:Win32/Loktrom.B distribution networks.

In various corners of the globe, Ransom:Win32/Loktrom.B grows by jumps as well as bounds. Nevertheless, the ransom notes and also methods of obtaining the ransom money amount may vary relying on certain local (local) setups. The ransom money notes as well as methods of obtaining the ransom quantity might vary depending on particular regional (regional) setups.

Ransomware injection

For instance:

    Faulty informs regarding unlicensed software application.

    In specific locations, the Trojans usually wrongfully report having detected some unlicensed applications made it possible for on the victim’s tool. The alert then requires the user to pay the ransom money.

    Faulty declarations concerning illegal web content.

    In nations where software program piracy is less popular, this approach is not as efficient for the cyber fraudulences. Additionally, the Ransom:Win32/Loktrom.B popup alert may falsely declare to be deriving from a law enforcement organization and also will certainly report having situated kid pornography or various other illegal data on the tool.

    Ransom:Win32/Loktrom.B popup alert may incorrectly assert to be deriving from a legislation enforcement establishment and will certainly report having located youngster porn or various other prohibited data on the device. The alert will in a similar way contain a need for the customer to pay the ransom money.

Technical details

File Info:

crc32: 53DE3B9E
md5: 1e7014989b272788d2cc1ccf1b2310c7
name: 1E7014989B272788D2CC1CCF1B2310C7.mlw
sha1: 0eb94638798015bc99db8835e37ac7413c91ae1a
sha256: 26de602ee28d4d58a95f0987faa13451d576180489c09336956f5f3dc4112db3
sha512: e4eb3e45304f10ded54fbe480c8295d573832e82a518b2d5a8dddb2c2ebf82b7e16a248458d6fae1829bf5efd24338d522af1006d64fe9572f78e9165a0e84ba
ssdeep: 768:oxTZZ5rR/PouaE9e5c+X5wx2ZKkKJ7oFgP41DzDkL8pbgrFvuN89fcZDy7YwacY:olZTRwub9CcUWJ7oFgIwL8tQFGfWEw9
type: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

LegalCopyright: Mini xa9 Shoo Load 1997-2005
InternalName: Gaea Ennui Scamp
FileVersion: 8.9
CompanyName: Pinnacle Systems
Comments: Pubic Balkan Wash Bluff Dates Turkey
ProductName: Shear Fabric
ProductVersion: 8.9
FileDescription: Chosen Bows
OriginalFilename: Waldo.exe
Translation: 0x0409 0x04b0

Ransom:Win32/Loktrom.B also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
Elasticmalicious (high confidence)
MicroWorld-eScanTrojan.Winlock.V
FireEyeGeneric.mg.1e7014989b272788
ALYacTrojan.Winlock.V
MalwarebytesMalware.Heuristic.1003
VIPRETrojan.Win32.Ransom.fna (v)
AegisLabTrojan.Win32.Generic.lh2q
SangforTrojan.Win32.Save.a
K7AntiVirusTrojan ( f1000f011 )
BitDefenderTrojan.Winlock.V
K7GWTrojan ( f1000f011 )
Cybereasonmalicious.89b272
BitDefenderThetaAI:Packer.EB5647A916
CyrenW32/SuspPack.EC.gen!Eldorado
SymantecML.Attribute.HighConfidence
APEXMalicious
Paloaltogeneric.ml
KasperskyHEUR:Trojan.Win32.Generic
AlibabaRansom:Win32/Genasom.f9978e6d
NANO-AntivirusTrojan.Win32.Winlock.kpnmg
RisingRansom.Gimemo!8.306 (CLOUD)
Ad-AwareTrojan.Winlock.V
SophosMal/Generic-S
ComodoMalware@#z9geybruxx50
F-SecureTrojan.TR/Crypt.ULPM.Gen
ZillyaTrojan.LockScreen.Win32.1631
McAfee-GW-EditionArtemis!Trojan
EmsisoftTrojan.Winlock.V (B)
WebrootW32.Malware.Gen
AviraTR/Crypt.ULPM.Gen
Antiy-AVLTrojan[Ransom]/Win32.PornoAsset
MicrosoftRansom:Win32/Loktrom.B
ArcabitTrojan.Winlock.V
ZoneAlarmHEUR:Trojan.Win32.Generic
GDataTrojan.Winlock.V
CynetMalicious (score: 100)
ESET-NOD32Win32/LockScreen.AJN
McAfeeArtemis!1E7014989B27
MAXmalware (ai score=88)
VBA32Hoax.Birele
TencentWin32.Trojan.Pornoasset.Eaxk
YandexTrojan.GenAsa!NJlJSvmOsgA
SentinelOneStatic AI – Malicious PE
FortinetW32/Yakes.LS!tr
PandaGeneric Malware
CrowdStrikewin/malicious_confidence_80% (D)
Qihoo-360Malware.Radar01.Gen

How to remove Ransom:Win32/Loktrom.B ransomware?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
Reasons why I would recommend GridinSoft1

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 Ransom:Win32/Loktrom.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.

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 Ransom:Win32/Loktrom.B 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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