Win32/Filecoder.Cerber.S

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

What is Win32/Filecoder.Cerber.S infection?

In this article you will locate regarding the definition of Win32/Filecoder.Cerber.S and its unfavorable impact on your computer. Such ransomware are a form of malware that is elaborated by on-line fraudulences to require paying the ransom money by a target.

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Most of the cases, Win32/Filecoder.Cerber.S ransomware will instruct its targets to launch funds move for the objective of counteracting the changes that the Trojan infection has presented to the target’s gadget.

Win32/Filecoder.Cerber.S Summary

These adjustments 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.
  • Presents an Authenticode digital signature;
  • 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.;
  • A process created a hidden window;
  • Creates an excessive number of UDP connection attempts to external IP addresses;
  • Unconventionial language used in binary resources: Chinese (Simplified);
  • Uses Windows utilities for basic functionality;
  • Attempts to modify desktop wallpaper;
  • 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!
  • Attempts to execute a binary from a dead or sinkholed URL;
  • Writes a potential ransom message to disk;
  • 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.

  • Attempts to access Bitcoin/ALTCoin wallets;
  • Generates some ICMP traffic;
  • 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.
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the files found on the sufferer’s hard disk — so the sufferer can no longer utilize the information;
  • 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.

Win32/Filecoder.Cerber.S

One of the most normal channels where Win32/Filecoder.Cerber.S are injected are:

  • By ways of phishing e-mails;
  • As a consequence of user ending up on a resource that holds a malicious software application;

As soon as the Trojan is efficiently infused, it will either cipher the information on the victim’s computer or prevent the device from working in a proper manner – while also putting a ransom money note that points out the need for the victims to effect the payment for the objective of decrypting the papers or recovering the data system back to the initial problem. In the majority of instances, the ransom money note will show up when the client restarts the PC after the system has actually already been damaged.

Win32/Filecoder.Cerber.S distribution networks.

In various corners of the world, Win32/Filecoder.Cerber.S expands by jumps as well as bounds. Nonetheless, the ransom money notes as well as tricks of obtaining the ransom money amount may differ depending upon particular regional (regional) settings. The ransom money notes and also tricks of extorting the ransom quantity might differ depending on particular regional (local) setups.

Ransomware injection

For example:

    Faulty signals regarding unlicensed software program.

    In specific areas, the Trojans usually wrongfully report having identified some unlicensed applications enabled on the sufferer’s tool. The alert then demands the customer to pay the ransom.

    Faulty declarations concerning prohibited material.

    In nations where software program piracy is less preferred, this method is not as effective for the cyber frauds. Alternatively, the Win32/Filecoder.Cerber.S popup alert may wrongly assert to be originating from a police organization as well as will report having located child pornography or various other prohibited data on the device.

    Win32/Filecoder.Cerber.S popup alert might falsely claim to be deriving from a legislation enforcement organization and will certainly report having situated kid porn or various other illegal information on the gadget. The alert will likewise include a need for the user to pay the ransom.

Technical details

File Info:

crc32: 7E00956A
md5: ba5c25351216e2f8d24fc19f97e91be1
name: BA5C25351216E2F8D24FC19F97E91BE1.mlw
sha1: 0a35383d6e710e9da6cad5a95a413717889c05d4
sha256: 1ce3d05a944b51bc86dc790a5ec460603aefa5cf6fb15be79607cd70d3cfa8d9
sha512: ea2ce3f19ea54683612b760a329f9597f12b47a9df41e7c7f717d4a7e37f213d0b4c69ce77715febac767f4e500b11981f1f3caad238c4bc25d68b055206e571
ssdeep: 6144:y4pX7VB1eDLW/2Jy3kWs5BNNAbiQIaNAoxNaCVFMUx+G9uWaV0:/BADqk9vfyNXQKhpgWaC
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

FileDescription: Advanced SystemCare Display
CompanyName: IObit
Translation: 0x0409 0x04e4

Win32/Filecoder.Cerber.S also known as:

GridinSoftTrojan.Ransom.Gen
K7AntiVirusTrojan ( 005224381 )
Elasticmalicious (high confidence)
DrWebTrojan.Encoder.4691
CynetMalicious (score: 100)
CAT-QuickHealTrojan.MauvaiseRI.S5249763
ALYacTrojan.Ransom.Cerber
CylanceUnsafe
ZillyaTrojan.Zerber.Win32.3347
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_100% (W)
AlibabaRansom:Win32/Zerber.1060d1d8
K7GWTrojan ( 005224381 )
Cybereasonmalicious.51216e
CyrenW32/Cerber.A.gen!Eldorado
SymantecRansom.Cerber
ESET-NOD32Win32/Filecoder.Cerber.S
APEXMalicious
AvastWin32:DangerousSig [Trj]
KasperskyTrojan-Ransom.Win32.Zerber.ejgi
BitDefenderGen:Variant.Ransom.Cerber.752
NANO-AntivirusTrojan.Win32.Zerber.ercgqk
MicroWorld-eScanGen:Variant.Ransom.Cerber.752
Ad-AwareGen:Variant.Ransom.Cerber.752
SophosTroj/Cerber-ANM
ComodoMalware@#3v98oa3r5swaq
BitDefenderThetaGen:NN.ZexaF.34692.Fq1@aGpmaRaj
VIPRETrojan.Win32.Generic!BT
TrendMicroRansom_CERBER.VSAHBQ
McAfee-GW-EditionRansomware-GCQ!BA5C25351216
FireEyeGeneric.mg.ba5c25351216e2f8
EmsisoftTrojan-Ransom.FileCoder (A)
SentinelOneStatic AI – Malicious PE
JiangminTrojanRansom.Zerber.a
WebrootW32.Trojan.Gen
AviraHEUR/AGEN.1123233
eGambitGeneric.Malware
MicrosoftRansom:Win32/Betisrypt.C!bit
ArcabitTrojan.Ransom.Cerber.752
AegisLabTrojan.Win32.Zerber.4!c
GDataGen:Variant.Ransom.Cerber.752
AhnLab-V3Trojan/Win32.Crypt.C2044610
Acronissuspicious
McAfeeRansomware-GCQ!BA5C25351216
MAXmalware (ai score=99)
VBA32Trojan.Encoder
PandaTrj/RansomCrypt.L
TrendMicro-HouseCallRansom_CERBER.VSAHBQ
RisingTrojan.Kryptik!1.ABBD (CLASSIC)
YandexTrojan.GenAsa!kD9e7UPX/Eo
IkarusTrojan-Ransom.Aleta
MaxSecureTrojan.Malware.300983.susgen
FortinetW32/Injector.EETM!tr
AVGWin32:DangerousSig [Trj]
Paloaltogeneric.ml

How to remove Win32/Filecoder.Cerber.S 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.

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 Win32/Filecoder.Cerber.S 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.S 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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