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

What is Trojan:Win32/Mespam.B infection?

In this post you will find regarding the interpretation of Trojan:Win32/Mespam.B and its negative influence on your computer. Such ransomware are a type of malware that is specified by on-line fraudulences to demand paying the ransom money by a target.

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Most of the instances, Trojan:Win32/Mespam.B ransomware will certainly instruct its victims to launch funds transfer for the purpose of neutralizing the amendments that the Trojan infection has introduced to the sufferer’s tool.

Trojan:Win32/Mespam.B Summary

These alterations can be as complies with:

  • Loads a driver;
  • Unconventionial language used in binary resources: Russian;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Attempts to repeatedly call a single API many times in order to delay analysis time. This significantly complicates the work of the virus analyzer. Typical malware tactics!
  • 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.
  • Created a service that was not started;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the records found on the target’s disk drive — so the target can no more use the data;
  • Preventing normal accessibility to the sufferer’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.


One of the most common networks whereby Trojan:Win32/Mespam.B are infused are:

  • By methods of phishing e-mails. Email phishing is a cyber attack that uses disguised email as a goal is to trick the recipient into believing that the message is something they want or need — a request from their bank, for instance, or a note from someone in their company — and to click a link for download a malware.
  • As an effect of individual ending up on a source that holds a harmful software program;

As quickly as the Trojan is efficiently injected, it will either cipher the data on the target’s computer or avoid the tool from functioning in a correct manner – while additionally positioning a ransom note that discusses the need for the victims to effect the payment for the objective of decrypting the records or restoring the data system back to the preliminary condition. In the majority of circumstances, the ransom money note will come up when the customer restarts the PC after the system has currently been damaged.

Trojan:Win32/Mespam.B circulation channels.

In numerous corners of the world, Trojan:Win32/Mespam.B expands by jumps as well as bounds. Nonetheless, the ransom notes and techniques of obtaining the ransom money quantity may vary depending on specific neighborhood (regional) settings. The ransom notes as well as methods of obtaining the ransom quantity may differ depending on certain local (local) setups.

Ransomware injection

For instance:

    Faulty notifies about unlicensed software.

    In particular locations, the Trojans often wrongfully report having spotted some unlicensed applications allowed on the target’s gadget. The alert then requires the individual to pay the ransom.

    Faulty declarations regarding unlawful content.

    In countries where software program piracy is less popular, this approach is not as reliable for the cyber fraudulences. Conversely, the Trojan:Win32/Mespam.B popup alert may falsely claim to be deriving from a law enforcement organization as well as will report having located child porn or various other unlawful data on the gadget.

    Trojan:Win32/Mespam.B popup alert might falsely assert to be deriving from a law enforcement organization as well as will certainly report having located kid pornography or various other illegal information on the gadget. The alert will similarly contain a need for the user to pay the ransom.

Technical details

File Info:

crc32: 36D50AD7
md5: 179452f72ebc2e32c7213fda66a234a9
name: 179452F72EBC2E32C7213FDA66A234A9.mlw
sha1: 5593347268f2d8fa1f9ca259849a154cd0d3767c
sha256: 59e32e0d7e460c33f6d1220da6909fb6a455f882f7666ae70824b0d8679baed1
sha512: e66bea232b56c29db5bd6fcd52254f697bb7bc7e87b68a0a7f19dd32b0ec0b07a61c3376f1f17fea01e361933d8656b27a0be7c504ebfd9b4b43a8450e74f0bc
ssdeep: 768:GKl4kgq4XdelHnbWuvUDFJal9EweSt3GPRuafpnmYYjZQ6i7+uVF8zMpiN3QXHq:GfkgJe9quIJal9fMPRnnmfvvoTpVu2h
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Trojan:Win32/Mespam.B also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 0001140e1 )
Elastic malicious (high confidence)
DrWeb Trojan.Siggen2.10491
Cynet Malicious (score: 100)
ALYac Trojan.Generic.1470521
Cylance Unsafe
Zillya Trojan.Jaber.Win32.42
Alibaba Trojan:Win32/Snocry.20260642
K7GW Trojan ( 0001140e1 )
Cybereason malicious.72ebc2
Cyren W32/Spammer.B.gen!Eldorado
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/TrojanProxy.Jaber
APEX Malicious
Avast FileRepMalware
ClamAV Win.Trojan.Jaber-1
BitDefender Trojan.Generic.1470521
NANO-Antivirus Trojan.Win32.Snocry.dwxgkg
MicroWorld-eScan Trojan.Generic.1470521
Tencent Win32.Trojan.Snocry.Dzai
Ad-Aware Trojan.Generic.1470521
Sophos Mal/Generic-S
BitDefenderTheta Gen:NN.ZexaF.34692.dyWba8tqXnmc
VIPRE Trojan.Win32.Generic!BT
TrendMicro Mal_Drpspam
McAfee-GW-Edition BehavesLike.Win32.PUPXAX.qc
Emsisoft Trojan.Generic.1470521 (B)
SentinelOne Static AI – Suspicious PE
Jiangmin Trojan/Genome.uld
Webroot Trojan:Win32/Mespam.B
Avira TR/Dropper.Gen
eGambit Unsafe.AI_Score_99%
Microsoft Trojan:Win32/Mespam.B
AegisLab Trojan.Win32.Jaber.h!c
GData Trojan.Generic.1470521
McAfee Artemis!179452F72EBC
MAX malware (ai score=99)
VBA32 Trojan.Spambot
Panda Trj/CI.A
TrendMicro-HouseCall Mal_Drpspam
Rising Ransom.Snocry!8.320 (CLOUD)
Yandex Trojan.GenAsa!RJhK6LyZu5Y
Fortinet W32/Cimuz.ACY!tr
AVG FileRepMalware

How to remove Trojan:Win32/Mespam.B 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 Trojan:Win32/Mespam.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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Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Trojan:Win32/Mespam.B you can always ask me in the comments for getting help.

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  1. GridinSoft Anti-Malware Review from HowToFix site:
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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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