Win32/Filecoder.Cerber.B

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

What is Win32/Filecoder.Cerber.B infection?

In this article you will certainly locate about the definition of Win32/Filecoder.Cerber.B and its adverse effect on your computer. Such ransomware are a type of malware that is clarified by on the internet scams to require paying the ransom money by a target.

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In the majority of the instances, Win32/Filecoder.Cerber.B ransomware will instruct its targets to initiate funds transfer for the objective of neutralizing the modifications that the Trojan infection has actually introduced to the sufferer’s gadget.

Win32/Filecoder.Cerber.B Summary

These alterations can be as follows:

  • At least one process apparently crashed during execution;
  • 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.
  • Attempts to connect to a dead IP:Port (3 unique times);
  • 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 attempted to delay the analysis task.;
  • At least one IP Address, Domain, or File Name was found in a crypto call;
  • 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.
  • Creates an excessive number of UDP connection attempts to external IP addresses;
  • Performs some HTTP requests;
  • Uses Windows utilities for basic functionality;
  • Attempts to delete volume shadow copies;
  • 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.
  • EternalBlue behavior. Allows cyber threat actors to remotely execute arbitrary code and gain access to a network by sending specially crafted packets.

    This is has made EternalBlue trick popular with various malware, such as Trickbot, a modular banking trojan, as well as CoinMiner and WannaMine, crypto miners that use the EternalBlue exploit in order to gain access to computing power to mine cryptocurrencies.

  • Checks the version of Bios, possibly for anti-virtualization;
  • Checks the system manufacturer, likely for anti-virtualization;
  • Creates a copy of itself;
  • Generates some ICMP traffic;
  • 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 records situated on the target’s hard drive — so the sufferer can no more use the data;
  • Preventing normal 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.
Similar behavior
Related domains
z.whorecord.xyz Trojan.Ransom.Cerber
a.tomx.xyz Trojan.Ransom.Cerber

Win32/Filecoder.Cerber.B

One of the most normal channels where Win32/Filecoder.Cerber.B Ransomware are injected 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 a consequence of individual winding up on a resource that holds a malicious software program;

As quickly as the Trojan is effectively infused, it will certainly either cipher the information on the victim’s PC or avoid the tool from functioning in a proper manner – while additionally putting a ransom money note that mentions the requirement for the victims to impact the repayment for the objective of decrypting the files or bring back the documents system back to the initial condition. In many circumstances, the ransom money note will certainly show up when the client reboots the COMPUTER after the system has already been damaged.

Win32/Filecoder.Cerber.B distribution networks.

In various edges of the globe, Win32/Filecoder.Cerber.B expands by leaps as well as bounds. Nonetheless, the ransom notes as well as methods of obtaining the ransom amount might vary depending on certain neighborhood (regional) setups. The ransom money notes as well as tricks of obtaining the ransom money amount may differ depending on certain local (regional) settings.

Ransomware injection

For instance:

    Faulty informs about unlicensed software program.

    In particular areas, the Trojans frequently wrongfully report having actually identified some unlicensed applications made it possible for on the victim’s gadget. The alert then requires the user to pay the ransom money.

    Faulty declarations concerning prohibited material.

    In countries where software piracy is much less preferred, this technique is not as effective for the cyber fraudulences. Conversely, the Win32/Filecoder.Cerber.B popup alert may wrongly claim to be deriving from a law enforcement institution and will certainly report having situated kid porn or various other unlawful data on the device.

    Win32/Filecoder.Cerber.B popup alert may falsely declare to be obtaining from a regulation enforcement institution and also will certainly report having situated youngster porn or various other illegal data on the device. The alert will likewise include a need for the user to pay the ransom money.

Technical details

File Info:

crc32: C48E38C3
md5: dd567010b51fb0efff43c4d4b5ae41f1
name: DD567010B51FB0EFFF43C4D4B5AE41F1.mlw
sha1: 6b5457b11dbeec62e4cdf76cab7494e887313494
sha256: f17e09a91ffdea777546f1fab81b4e9ab52c4da2a456f6c1fb4833a9bc24ec11
sha512: 16415239397843e82abec33be54be6c03d10123d412f5830cdee394900e74901d6695c5935af8ebbca15318cc995e8ac449f4fd97fc354191a74441b7fe18168
ssdeep: 12288:uxrR828VuBtQkl9zXhIfZtTJXgbgR6gra9x+PGYfLi3ZW:CuuUUqo
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright xa9 Bsd Vilno Fet
InternalName: feedstock
FileVersion: 9.7.4647.12365
CompanyName: Bsd Vilno Fet
ProductName: feedstock ocote
ProductVersion: 9.7.4647.12365
FileDescription: feedstock pipkin coth
OriginalFilename: feedstock.exe
Translation: 0x0409 0x04b0

Win32/Filecoder.Cerber.B also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
DrWeb Trojan.Encoder.4395
MicroWorld-eScan Gen:Trojan.Heur3.LPT.Iy0@ayaWWHdib
FireEye Generic.mg.dd567010b51fb0ef
ALYac Trojan.Ransom.Cerber
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
AegisLab Trojan.Win32.Zerber.j!c
Sangfor Trojan.Win32.Generic.3
CrowdStrike win/malicious_confidence_90% (D)
BitDefender Gen:Trojan.Heur3.LPT.Iy0@ayaWWHdib
K7GW Trojan ( 0055e3ef1 )
K7AntiVirus Trojan ( 0055e3ef1 )
BitDefenderTheta AI:Packer.981DF6E021
Symantec W32.Patched!gen
APEX Malicious
Avast Win32:Trojan-gen
Kaspersky HEUR:Trojan.Win32.Generic
Alibaba Trojan:Win32/Cerber.87beaa7a
NANO-Antivirus Trojan.Win32.Encoder.ecozmq
Rising Ransom.Cerber!8.3058 (C64:YzY0OuxRT3W5+fl8)
Ad-Aware Gen:Trojan.Heur3.LPT.Iy0@ayaWWHdib
Sophos Mal/Generic-S
F-Secure Heuristic.HEUR/AGEN.1123403
Zillya Trojan.Zerber.Win32.13
McAfee-GW-Edition RDN/Ransom.aj
Emsisoft Gen:Trojan.Heur3.LPT.Iy0@ayaWWHdib (B)
Ikarus Trojan.Win32.Filecoder
GData Gen:Trojan.Heur3.LPT.Iy0@ayaWWHdib
Jiangmin Trojan.Zerber.bc
Webroot W32.Trojan.Gen
Avira HEUR/AGEN.1123403
Antiy-AVL Trojan[Ransom]/Win32.Zerber
Kingsoft Win32.Troj.Undef.(kcloud)
Arcabit Trojan.Heur3.LPT.EF2B94
ZoneAlarm HEUR:Trojan.Win32.Generic
Microsoft Ransom:Win32/Cerber.A
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.Cerber.C1414273
McAfee RDN/Ransom.aj
MAX malware (ai score=85)
VBA32 Hoax.Zerber
Malwarebytes Malware.Heuristic.1004
Panda Trj/GdSda.A
ESET-NOD32 Win32/Filecoder.Cerber.B
TrendMicro-HouseCall Ransom_CERBER.CBQ165A
Tencent Malware.Win32.Gencirc.10c25ab1
Yandex Trojan.Zerber!H8rXTj1wxkg
SentinelOne Static AI – Malicious PE
Fortinet W32/Kryptik.EYKI!tr
AVG Win32:Trojan-gen
Cybereason malicious.0b51fb
Paloalto generic.ml
Qihoo-360 HEUR/QVM20.1.Malware.Gen

How to remove Win32/Filecoder.Cerber.B 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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There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft2.

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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 Win32/Filecoder.Cerber.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 Win32/Filecoder.Cerber.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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