Written by Robert Bailey

What is Trojan:Win32/Meredrop infection?

In this post you will locate regarding the definition of Trojan:Win32/Meredrop and its negative influence on your computer. Such ransomware are a kind 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/Meredrop virus will instruct its sufferers to start funds transfer for the function of counteracting the amendments that the Trojan infection has actually presented to the victim’s device.

Trojan:Win32/Meredrop Summary

These adjustments 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.
  • 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.
  • Expresses interest in specific running processes;
  • 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.

  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses Windows utilities for basic functionality;
  • Code injection with CreateRemoteThread in a remote process;
  • Deletes its original binary from disk;
  • 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.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the files found on the sufferer’s hard disk — so the victim can no longer make use of the data;
  • 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.


One of the most typical channels through which Trojan:Win32/Meredrop Trojans are infused are:

  • By ways of phishing e-mails;
  • As an effect of individual winding up on a source that hosts a malicious software;

As quickly as the Trojan is effectively infused, it will either cipher the information on the target’s PC or stop the gadget from working in an appropriate manner – while also placing a ransom money note that mentions the need for the sufferers to impact the repayment for the function of decrypting the records or bring back the file system back to the first condition. In most instances, the ransom money note will show up when the customer restarts the PC after the system has currently been harmed.

Trojan:Win32/Meredrop distribution networks.

In numerous edges of the globe, Trojan:Win32/Meredrop grows by leaps as well as bounds. Nevertheless, the ransom money notes as well as tricks of extorting the ransom amount may vary depending on specific local (regional) settings. The ransom money notes and methods of extorting the ransom amount might differ depending on certain local (regional) settings.

Ransomware injection

For instance:

    Faulty notifies concerning unlicensed software application.

    In particular locations, the Trojans commonly wrongfully report having actually detected some unlicensed applications enabled on the victim’s tool. The sharp then requires the customer to pay the ransom money.

    Faulty declarations concerning unlawful web content.

    In nations where software piracy is less popular, this method is not as effective for the cyber fraudulences. Alternatively, the Trojan:Win32/Meredrop popup alert may incorrectly declare to be deriving from a law enforcement establishment and will report having located child pornography or various other prohibited data on the gadget.

    Trojan:Win32/Meredrop popup alert might incorrectly assert to be obtaining from a legislation enforcement organization as well as will certainly report having located child pornography or other illegal data on the gadget. The alert will similarly include a demand for the customer to pay the ransom.

Technical details

File Info:

crc32: 6E4CC308
md5: f9d85ea03af2421d874828cec9b0df3e
name: F9D85EA03AF2421D874828CEC9B0DF3E.mlw
sha1: 30111ddbb0780ac0c38f2709ee8a9f0e2be758f6
sha256: 5e204205852ce25ef9b457cbfbdfba8a8ff77a697380f6b6c27c57217155bc89
sha512: ef6d8481bab378ee0f8e4d4a5f9f9c3a9dd7d574ee8b3f3743631c607471671874e71191bea0d71370b9749acf2d30a23902d434823b3fb8b6e2d50411554706
ssdeep: 768:skS0TPcUOnXl6SHVqpIPWGhy0ZtE+Qqdo/79cSGk8XZT:sOP+H7PW/0ZtEf79cSOZ
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Trojan:Win32/Meredrop also known as:

Bkav W32.AIDetectVM.malware5
Elastic malicious (high confidence)
DrWeb Trojan.MulDrop.15995
MicroWorld-eScan Trojan.Vundo.EOJ
ALYac Trojan.Vundo.EOJ
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
AegisLab Worm.Win32.Kido.kYOF
Sangfor Malware
BitDefender Trojan.Vundo.EOJ
Cybereason malicious.03af24
BitDefenderTheta AI:Packer.63BBE1EE1D
Cyren W32/Troj_Obfusc.D.gen!Eldorado
Symantec ML.Attribute.HighConfidence
TotalDefense Win32/ASuspect.ERMG
TrendMicro-HouseCall Mal_Vundo-19
Avast Win32:Evo-gen [Susp]
ClamAV Win.Trojan.Inject-1500
Kaspersky HEUR:Trojan.Win32.Generic
Alibaba Trojan:Win32/Generic.9fe73ff7
NANO-Antivirus Trojan.Win32.Inject.ttnz
ViRobot Trojan.Win32.Inject.34960
Rising Malware.Undefined!8.C (TFE:1:r5g3e5cMv0D)
Ad-Aware Trojan.Vundo.EOJ
TACHYON Trojan/W32.Inject.34960
Emsisoft Trojan.Vundo.EOJ (B)
Comodo TrojWare.Win32.PkdMonder.GEN@1lhswy
F-Secure Trojan.TR/Dropper.Gen
Zillya Trojan.Inject.Win32.9690
TrendMicro Mal_Vundo-19
Sophos Mal/Generic-S
Jiangmin Trojan/Inject.caf
Webroot W32.Meredrop.Gen
Avira TR/Dropper.Gen
Antiy-AVL Trojan/Win32.AGeneric
Microsoft Trojan:Win32/Meredrop
Arcabit Trojan.Vundo.EOJ
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Trojan.Vundo.EOJ
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.Inject.C30006
Acronis suspicious
McAfee Vundo.gen.m
MAX malware (ai score=100)
VBA32 BScope.Trojan.Downloader
Malwarebytes Malware.Heuristic.1003
Panda Generic Malware
APEX Malicious
Tencent Win32.Trojan.Generic.Egoe
Yandex Trojan.GenAsa!suGvJvHBpj4
SentinelOne Static AI – Malicious PE
eGambit Unsafe.AI_Score_99%
Fortinet W32/Inject.HFX!tr
MaxSecure Trojan.Malware.300983.susgen
AVG Win32:Evo-gen [Susp]
CrowdStrike win/malicious_confidence_100% (W)
Qihoo-360 Win32/Trojan.e82

How to remove Trojan:Win32/Meredrop 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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The is an excellent way to deal with recognizing and removing threats – using Gridinsoft Anti-Malware. This program will scan your PC, find and neutralize all suspicious processes.2.

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.

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Press “Install” button.

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Once installed, Anti-Malware will automatically run.

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Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for Trojan:Win32/Meredrop 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 Trojan:Win32/Meredrop you can always ask me in the comments for getting help.

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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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