Trojan-Ransom.Win32.Zerber.fnmo

What is Trojan-Ransom.Win32.Zerber.fnmo infection?

In this short article you will discover concerning the interpretation of Trojan-Ransom.Win32.Zerber.fnmo and its adverse influence on your computer system. Such ransomware are a kind of malware that is specified by on the internet scams to demand paying the ransom by a target.

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Most of the situations, Trojan-Ransom.Win32.Zerber.fnmo virus will instruct its targets to start funds transfer for the function of neutralizing the modifications that the Trojan infection has actually presented to the target’s device.

Trojan-Ransom.Win32.Zerber.fnmo 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.
  • Enumerates user accounts on the system;
  • 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 created a hidden window;
  • Drops a binary and executes it. Trojan-Downloader installs itself to the system and waits until an Internet connection becomes available to connect to a remote server or website in order to download additional malware onto the infected computer.
  • 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 likely packed with VMProtect;
  • Uses Windows utilities for basic functionality;
  • Attempts to delete volume shadow copies;
  • 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!
  • Modifies boot configuration settings;
  • Exhibits behavior characteristic of Cerber ransomware;
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config;
  • Mimics the file times of a Windows system file;
  • 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.
  • Attempts to identify installed AV products by installation directory;
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Creates a copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the documents found on the sufferer’s hard disk — so the sufferer can no more utilize the data;
  • Preventing routine 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.

Trojan-Ransom.Win32.Zerber.fnmo

One of the most common networks through which Trojan-Ransom.Win32.Zerber.fnmo are infused are:

  • By means of phishing emails;
  • As an effect of user ending up on a source that holds a destructive software;

As quickly as the Trojan is effectively infused, it will either cipher the information on the victim’s PC or prevent the gadget from working in a correct way – while also placing a ransom note that mentions the need for the targets to effect the settlement for the objective of decrypting the documents or restoring the documents system back to the initial condition. In the majority of circumstances, the ransom money note will turn up when the customer reboots the PC after the system has currently been damaged.

Trojan-Ransom.Win32.Zerber.fnmo circulation networks.

In numerous edges of the world, Trojan-Ransom.Win32.Zerber.fnmo grows by leaps and also bounds. However, the ransom notes and also tricks of extorting the ransom money amount may differ depending on certain regional (local) setups. The ransom money notes and methods of obtaining the ransom money amount may vary depending on particular neighborhood (regional) settings.

Ransomware injection

As an example:

    Faulty notifies concerning unlicensed software program.

    In particular areas, the Trojans usually wrongfully report having actually detected some unlicensed applications allowed on the sufferer’s gadget. The sharp then requires the customer to pay the ransom money.

    Faulty declarations regarding unlawful material.

    In countries where software piracy is less preferred, this technique is not as efficient for the cyber frauds. Conversely, the Trojan-Ransom.Win32.Zerber.fnmo popup alert may wrongly claim to be stemming from a law enforcement institution and also will report having located child pornography or various other prohibited data on the tool.

    Trojan-Ransom.Win32.Zerber.fnmo popup alert might incorrectly assert to be deriving from a legislation enforcement establishment as well as will report having situated kid pornography or other illegal data on the tool. The alert will likewise have a requirement for the individual to pay the ransom money.

Technical details

File Info:

crc32: 6C65F5D7
md5: b39c3b65240b2fa1405b916266086218
name: B39C3B65240B2FA1405B916266086218.mlw
sha1: b1cbff6593ae0da7c5e9fc72d93d22a4c5a98c57
sha256: 99b48d557729081a638c43a44581f5b97502655047a1d7884f2ddd4e735fc67f
sha512: f878e60f8e42cea8c0f6346d5205a21c8087fc02405143d49f5559efee82832cca9a1194a6eef2284846de457afdff06e7418e65c260945d63464cd6f20f8766
ssdeep: 3072:DDY73anzGmvi47vByz3GytKgkMh80Mt8Mgq7i5sOpe3F89lmft1:QKzGmJ4znK/V0byiTpwFKUfn
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright xa9 Cojudices
InternalName: bute
FileVersion: 9.4
CompanyName: Cojudices
ProductName: bute billowier uhs
ProductVersion: 9.4
FileDescription: bute bul mbd
OriginalFilename: bute.exe
Translation: 0x0409 0x04b0

Trojan-Ransom.Win32.Zerber.fnmo also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.4794
Cynet Malicious (score: 100)
ALYac Gen:Heur.Mint.Titirez.hy0@puNyxQbi
Cylance Unsafe
Zillya Trojan.Zerber.Win32.4015
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/Zerber.746519cb
K7GW Riskware ( 0040eff71 )
K7AntiVirus Riskware ( 0040eff71 )
Cyren W32/S-aaa71941!Eldorado
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Kryptik.EZRH
APEX Malicious
Avast Win32:Malware-gen
Kaspersky Trojan-Ransom.Win32.Zerber.fnmo
BitDefender Gen:Heur.Mint.Titirez.hy0@puNyxQbi
NANO-Antivirus Trojan.Win32.Zerber.evqjmt
MicroWorld-eScan Gen:Heur.Mint.Titirez.hy0@puNyxQbi
Tencent Win32.Trojan.Zerber.Pezk
Ad-Aware Gen:Heur.Mint.Titirez.hy0@puNyxQbi
Sophos Mal/Generic-S
BitDefenderTheta Gen:NN.ZexaF.34628.hy0@auNyxQbi
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_Zerber.R002C0GK720
McAfee-GW-Edition BehavesLike.Win32.Ramnit.cc
FireEye Generic.mg.b39c3b65240b2fa1
Emsisoft Gen:Heur.Mint.Titirez.hy0@puNyxQbi (B)
SentinelOne Static AI – Suspicious PE
Jiangmin Trojan.Zerber.dnk
Avira HEUR/AGEN.1122090
Microsoft Ransom:Win32/Cerber!rfn
Arcabit Trojan.Mint.Titirez.EAD17B1
ZoneAlarm Trojan-Ransom.Win32.Zerber.fnmo
GData Gen:Heur.Mint.Titirez.hy0@puNyxQbi
AhnLab-V3 Trojan/Win32.Zerber.C2379187
Acronis suspicious
McAfee Artemis!B39C3B65240B
MAX malware (ai score=97)
VBA32 Hoax.Zerber
Malwarebytes Malware.Heuristic.1003
Panda Trj/GdSda.A
TrendMicro-HouseCall Ransom_Zerber.R002C0GK720
Rising Ransom.Cerber!8.3058 (CLOUD)
Ikarus Trojan.Win32.Crypt
Fortinet W32/Kryptik.EYKI!tr
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Ransom.Cerber.HgIASOcA

How to remove Trojan-Ransom.Win32.Zerber.fnmo 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 Trojan-Ransom.Win32.Zerber.fnmo 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:

Full version of GridinSoft

Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Trojan-Ransom.Win32.Zerber.fnmo 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/products/

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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