PWS:MSIL/Logbro.A

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

What is PWS:MSIL/Logbro.A infection?

In this article you will certainly discover about the interpretation of PWS:MSIL/Logbro.A and also its unfavorable influence on your computer system. Such ransomware are a form of malware that is elaborated by online frauds to demand paying the ransom money by a sufferer.

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Most of the cases, PWS:MSIL/Logbro.A infection will advise its sufferers to start funds transfer for the function of reducing the effects of the modifications that the Trojan infection has actually introduced to the target’s tool.

PWS:MSIL/Logbro.A Summary

These modifications 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.
  • 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 127.0.0.1:0;
  • 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.

  • Sniffs keystrokes;
  • Steals private information from local Internet browsers;
  • 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.
  • Checks the CPU name from registry, possibly for anti-virtualization;
  • Creates a copy of itself;
  • Harvests credentials from local FTP client softwares;
  • Harvests information related to installed instant messenger clients;
  • 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.
  • Ciphering the papers found on the victim’s disk drive — so the target can no more utilize the information;
  • Preventing regular access to the victim’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.
Similar behavior
Related domains
fr07fr.ddns.netTrojan-Ransom.Win32.Blocker.hvgn

PWS:MSIL/Logbro.A

One of the most normal channels where PWS:MSIL/Logbro.A are infused are:

  • By ways of phishing emails;
  • As a consequence of user ending up on a source that organizes a harmful software program;

As soon as the Trojan is efficiently injected, it will either cipher the information on the target’s computer or protect against the gadget from working in a proper fashion – while likewise placing a ransom money note that discusses the need for the targets to effect the repayment for the purpose of decrypting the documents or bring back the data system back to the initial problem. In the majority of circumstances, the ransom note will turn up when the client restarts the COMPUTER after the system has actually already been damaged.

PWS:MSIL/Logbro.A circulation networks.

In numerous edges of the world, PWS:MSIL/Logbro.A expands by leaps as well as bounds. Nonetheless, the ransom notes as well as techniques of extorting the ransom money quantity might vary relying on certain regional (regional) settings. The ransom money notes and techniques of obtaining the ransom amount may differ depending on certain local (regional) settings.

Ransomware injection

For example:

    Faulty notifies regarding unlicensed software.

    In certain locations, the Trojans frequently wrongfully report having identified some unlicensed applications allowed on the victim’s device. The sharp then demands the customer to pay the ransom.

    Faulty statements about illegal web content.

    In nations where software program piracy is much less preferred, this approach is not as efficient for the cyber fraudulences. Alternatively, the PWS:MSIL/Logbro.A popup alert may falsely declare to be originating from a law enforcement establishment as well as will report having situated youngster pornography or various other prohibited data on the gadget.

    PWS:MSIL/Logbro.A popup alert may wrongly claim to be obtaining from a legislation enforcement organization and also will certainly report having located child pornography or various other prohibited data on the tool. The alert will similarly contain a demand for the user to pay the ransom money.

Technical details

File Info:

crc32: 68CC6477
md5: f80f205504dc6c1199efb55014f450b7
name: F80F205504DC6C1199EFB55014F450B7.mlw
sha1: 9fc14c1c92881ffc420dc85beb364a7ae0be99e7
sha256: 0fafa2f50e82400fa08f9d1854caf74f8f7c2e1d4892eb919401bd1beb4199bc
sha512: d649954c28ec36a234f93158b4647913ff868e50701dbdff28ae6320583835f13e6e440ab3cd1247bef063d4311750f9a60f72e35e489615f49feb77132a867d
ssdeep: 6144:Zc7SHm1ENpZuafkDhLDXHYKEGlJ08Li8YDvnaN9LDlDgv7aF2U2m1m:ZwSbqLDbEGV2IPlDgvGFrD8
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0
LegalCopyright:
Assembly Version: 1.5.5.4
InternalName: W.exe
FileVersion: 1.5.5.4
ProductVersion: 1.5.5.4
FileDescription:
OriginalFilename: W.exe

PWS:MSIL/Logbro.A also known as:

GridinSoftTrojan.Ransom.Gen
K7AntiVirusTrojan ( 0055e3e71 )
Elasticmalicious (high confidence)
DrWebTrojan.PWS.Siggen1.43343
CynetMalicious (score: 99)
CylanceUnsafe
ZillyaTrojan.Injector.Win32.335515
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_100% (D)
BitDefenderGen:Heur.MSIL.Bladabindi.1
K7GWTrojan ( 0055e3e71 )
Cybereasonmalicious.504dc6
SymantecML.Attribute.HighConfidence
ESET-NOD32MSIL/Agent.KH
APEXMalicious
KasperskyTrojan-Ransom.Win32.Blocker.hvgn
AlibabaRansom:Win32/Blocker.fc6f8de0
NANO-AntivirusTrojan.Win32.Blocker.dyiqwk
MicroWorld-eScanGen:Heur.MSIL.Bladabindi.1
TencentWin32.Trojan.Blocker.Ebgp
Ad-AwareGen:Heur.MSIL.Bladabindi.1
SophosMal/Generic-S
ComodoMalware@#3izyesoe84fj0
BitDefenderThetaGen:NN.ZemsilF.34690.Qq0@ae28n5d
VIPRETrojan.Win32.Generic!BT
McAfee-GW-EditionGenericRXCS-TE!F80F205504DC
FireEyeGeneric.mg.f80f205504dc6c11
EmsisoftGen:Heur.MSIL.Bladabindi.1 (B)
SentinelOneStatic AI – Malicious PE
JiangminTrojan/Blocker.pbe
AviraHEUR/AGEN.1100393
eGambitUnsafe.AI_Score_99%
Antiy-AVLTrojan/Generic.ASMalwS.15573FB
KingsoftWin32.Troj.Undef.(kcloud)
MicrosoftPWS:MSIL/Logbro.A
ArcabitTrojan.MSIL.Bladabindi.1
AegisLabTrojan.Win32.Blocker.j!c
GDataGen:Heur.MSIL.Bladabindi.1
AhnLab-V3Malware/Win32.Generic.C1196947
McAfeeGenericRXCS-TE!F80F205504DC
MAXmalware (ai score=100)
VBA32Hoax.Blocker
PandaTrj/CI.A
RisingRansom.Blocker!8.12A (CLOUD)
YandexTrojan.Blocker!zzTRT0Qrukk
IkarusWorm.MSIL.Agent
FortinetMSIL/Generic.DN.B3F89!tr
Paloaltogeneric.ml

How to remove PWS:MSIL/Logbro.A virus?

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 PWS:MSIL/Logbro.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 PWS:MSIL/Logbro.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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