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

What is Chir.Virus.FileInfector.DDS infection?

In this short article you will locate concerning the definition of Chir.Virus.FileInfector.DDS and its adverse effect on your computer. Such ransomware are a type of malware that is elaborated by on-line frauds to demand paying the ransom money by a victim.

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In the majority of the situations, Chir.Virus.FileInfector.DDS infection will certainly instruct its targets to initiate funds transfer for the purpose of reducing the effects of the changes that the Trojan infection has actually presented to the target’s tool.

Chir.Virus.FileInfector.DDS Summary

These alterations can be as adheres to:

  • 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.
  • Unconventionial language used in binary resources: Serbian;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Code injection with CreateRemoteThread in a remote process;
  • 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.
  • 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.
  • Likely virus infection of existing system binary;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers located on the victim’s hard drive — so the victim can no longer utilize the data;
  • Preventing normal accessibility to the victim’s workstation;


One of the most typical channels whereby Chir.Virus.FileInfector.DDS Ransomware are infused are:

  • By ways of phishing emails;
  • As an effect of individual ending up on a source that hosts a harmful software application;

As quickly as the Trojan is efficiently infused, it will either cipher the information on the target’s computer or stop the gadget from operating in a correct fashion – while likewise placing a ransom money note that points out the need for the targets to effect the repayment for the function of decrypting the papers or recovering the data system back to the initial problem. In many circumstances, the ransom note will show up when the customer restarts the PC after the system has actually already been damaged.

Chir.Virus.FileInfector.DDS circulation networks.

In various corners of the globe, Chir.Virus.FileInfector.DDS grows by jumps and bounds. Nevertheless, the ransom money notes as well as techniques of obtaining the ransom money quantity may differ relying on particular regional (local) settings. The ransom notes and techniques of obtaining the ransom amount might differ depending on certain neighborhood (regional) setups.

Ransomware injection

For instance:

    Faulty signals concerning unlicensed software.

    In particular locations, the Trojans commonly wrongfully report having discovered some unlicensed applications enabled on the target’s tool. The alert after that demands the user to pay the ransom.

    Faulty declarations regarding illegal content.

    In nations where software piracy is less popular, this technique is not as reliable for the cyber scams. Additionally, the Chir.Virus.FileInfector.DDS popup alert may falsely declare to be originating from a law enforcement organization and also will certainly report having located kid pornography or various other prohibited information on the gadget.

    Chir.Virus.FileInfector.DDS popup alert might falsely claim to be deriving from a regulation enforcement establishment and will certainly report having located youngster porn or various other unlawful data on the tool. The alert will similarly include a demand for the user to pay the ransom.

Technical details

File Info:

crc32: AD29EE27
md5: f9ed754a9b8ba7db8bd2c3c67d5ed5a6
name: F9ED754A9B8BA7DB8BD2C3C67D5ED5A6.mlw
sha1: 75945ece0caf7e08eb453fd31cc80a940e74f71b
sha256: 92a7df773b2c3c8d7bafa674b581d228ccae02822087324a3a963dd2d624f23b
sha512: 35b28c5a145b7ab2c6401fb70caf1eaf1e90e321497af94881c2bab30fd9b19a1c312cd0eeae389739180d5b7c0c2507a15fc3b62a08f1e6663d151a7ffd73ea
ssdeep: 6144:0nkjpLBxVbFN3SPMwrOmYDn6avYKruu1Dz4eF:t1BfTClK1eU4e
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright (C) 2018, uucajzkofbe
InternalName: iyewostu

Chir.Virus.FileInfector.DDS also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.ChirBPE
K7AntiVirus Trojan ( 00176e371 )
Elastic malicious (high confidence)
DrWeb Win32.HLLW.Autoruner2.48470
Cynet Malicious (score: 100)
CAT-QuickHeal W32.Runouce.B
ALYac Trojan.BrsecmonE.1
Cylance Unsafe
Sangfor Win.Worm.Brontok-88
CrowdStrike win/malicious_confidence_100% (W)
K7GW Trojan ( 0054252c1 )
Cybereason malicious.a9b8ba
Baidu Win32.Virus.ChineseHacker.a
Cyren W32/Thecid.B@mm
Symantec W32.Chir.B@mm
ESET-NOD32 Win32/Chir.B
APEX Malicious
Avast Win32:Oncer [Inf]
ClamAV Win.Worm.Brontok-88
Kaspersky Email-Worm.Win32.Runouce.b
BitDefender Trojan.BrsecmonE.1
NANO-Antivirus Virus.Win32.Runouce.bxafx
ViRobot Win32.Chir.B
MicroWorld-eScan Trojan.BrsecmonE.1
Tencent Worm.Win32.Runouce.d
Ad-Aware Trojan.BrsecmonE.1
Sophos ML/PE-A + W32/Chir-B
Comodo EmailWorm.Win32.Runonce.~v001@1qup51
BitDefenderTheta AI:FileInfector.F1BE214812
VIPRE Virus.Win32.Chir.c (v)
TrendMicro PE_Chir.B
McAfee-GW-Edition W32/Chir.b@MM
Emsisoft Trojan.BrsecmonE.1 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Win32/cnPeace.b
Avira W32/Chir.B
eGambit Unsafe.AI_Score_99%
Microsoft Virus:Win32/Chir.B@mm
GData Win32.Virus.Chir.A
TACHYON Virus/W32.Runouce
AhnLab-V3 Win32/ChiHack.6652
Acronis suspicious
McAfee W32/Chir.b@MM
MAX malware (ai score=80)
VBA32 Virus.Win32.Chur.A
Malwarebytes Chir.Virus.FileInfector.DDS
Panda Generic Malware
TrendMicro-HouseCall PE_Chir.B
Rising Malware.Heuristic!ET#77% (RDMK:cmRtazoCzL92kp8Dt3DzocSiOT/b)
Yandex Trojan.GenAsa!unuHEz816S8
Ikarus Email-Worm.Win32.Runouce.B
MaxSecure Ransomeware.CRAB.gen
Fortinet W32/Chir.B@mm
AVG Win32:Oncer [Inf]

How to remove Chir.Virus.FileInfector.DDS 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 Chir.Virus.FileInfector.DDS 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 Chir.Virus.FileInfector.DDS 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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