Win32/Filecoder.Jaff.A

What is Win32/Filecoder.Jaff.A infection?

In this post you will discover concerning the interpretation of Win32/Filecoder.Jaff.A and also its negative impact on your computer. Such ransomware are a type of malware that is clarified by on-line frauds to demand paying the ransom money by a sufferer.

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In the majority of the situations, Win32/Filecoder.Jaff.A ransomware will advise its victims to start funds transfer for the purpose of counteracting the amendments that the Trojan infection has actually presented to the victim’s device.

Win32/Filecoder.Jaff.A 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.
  • 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.;
  • 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
  • Exhibits possible ransomware file modification behavior;
  • Writes a potential ransom message to disk;
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Ciphering the documents found on the target’s disk drive — so the victim can no more utilize the data;
  • Preventing routine 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.Jaff.A

The most normal networks through which Win32/Filecoder.Jaff.A Ransomware are injected are:

  • By means of phishing e-mails;
  • As a repercussion of customer winding up on a resource that hosts a destructive software application;

As quickly as the Trojan is effectively injected, it will either cipher the data on the sufferer’s PC or stop the gadget from operating in an appropriate manner – while also placing a ransom note that discusses the demand for the sufferers to impact the settlement for the function of decrypting the records or recovering the file system back to the preliminary problem. In the majority of circumstances, the ransom money note will certainly show up when the client reboots the PC after the system has already been damaged.

Win32/Filecoder.Jaff.A distribution channels.

In different edges of the globe, Win32/Filecoder.Jaff.A grows by leaps and also bounds. Nonetheless, the ransom notes and tricks of obtaining the ransom money quantity may differ relying on particular neighborhood (local) settings. The ransom notes as well as techniques of extorting the ransom money amount may differ depending on particular local (regional) settings.

Ransomware injection

For instance:

    Faulty signals concerning unlicensed software program.

    In specific locations, the Trojans often wrongfully report having actually spotted some unlicensed applications allowed on the sufferer’s device. The alert then demands the individual to pay the ransom money.

    Faulty statements about unlawful content.

    In nations where software program piracy is much less preferred, this technique is not as reliable for the cyber fraudulences. Alternatively, the Win32/Filecoder.Jaff.A popup alert may wrongly claim to be stemming from a law enforcement institution and also will report having located child pornography or various other illegal data on the gadget.

    Win32/Filecoder.Jaff.A popup alert might falsely declare to be obtaining from a legislation enforcement organization as well as will report having located youngster pornography or various other unlawful data on the device. The alert will likewise include a need for the user to pay the ransom money.

Technical details

File Info:

crc32: 3353E07B
md5: c2a760c6461449ac1d5a5538242bed11
name: C2A760C6461449AC1D5A5538242BED11.mlw
sha1: 59684c6261afc698c0f6a46658986f0268f4c5a0
sha256: 387812ee2820cbf49812b1b229b7d8721ee37296f7b6018332a56e30a99e1092
sha512: b00734a77c70f18ed10049c67823316498208b32e9f662f9fa56074b862bd8606826947f8cb394ed48d0d9b88f47e7fa214153e53fbc83c60bb7075d57375dd8
ssdeep: 3072:/29rIyJvv9Gq9q/uNKFO+oFGqN/xJCpgDjXYQWNoF97PYJ:e98S9Gq9WM5Z2mbYQWNslY
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright xa9 t k ns faghlxp
InternalName: Kuipfgtqlle
FileVersion: 6.22
CompanyName: Lrpssrn jtstfvy mw
ProductName: Kow lbnlasbn ncrttl roryz
ProductVersion: 6.22
FileDescription: Zxrlbt cp mlkat ovaa
OriginalFilename: Kuipfgtqlle
Translation: 0x0002 0x0001

Win32/Filecoder.Jaff.A also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 0050dd691 )
DrWeb Trojan.Encoder.11520
Cynet Malicious (score: 100)
CAT-QuickHeal Ransom.JAFF.A4
ALYac Trojan.Ransom.Jaff
Cylance Unsafe
Zillya Trojan.Filecoder.Win32.5012
Sangfor Suspicious.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/Crypren.12f1ee14
K7GW Trojan ( 0050dd691 )
Cybereason malicious.646144
Cyren W32/Trojan.TMGM-1360
Symantec Ransom.Enciphered
ESET-NOD32 Win32/Filecoder.Jaff.A
Zoner Trojan.Win32.58906
APEX Malicious
Avast Win32:Trojan-gen
ClamAV Win.Ransomware.Jaff-6316620-4
Kaspersky Trojan-Ransom.Win32.Crypren.adsk
BitDefender Trojan.GenericKD.5082088
NANO-Antivirus Trojan.Win32.Jaff.epvmfz
ViRobot Trojan.Win32.Ransom.147456.B
MicroWorld-eScan Trojan.GenericKD.5082088
Tencent Malware.Win32.Gencirc.114ad5e9
Ad-Aware Trojan.GenericKD.5082088
Sophos Mal/Generic-R + Troj/Jaff-A
Comodo Malware@#17ls9hoyhfodw
BitDefenderTheta Gen:NN.ZexaF.34628.jq0@aOAXyIfi
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_CRYPJAFF.ENF
McAfee-GW-Edition BehavesLike.Win32.Emotet.ch
FireEye Generic.mg.c2a760c6461449ac
Emsisoft Trojan.GenericKD.5082088 (B)
SentinelOne Static AI – Suspicious PE
Jiangmin Trojan.Crypren.iw
Webroot W32.Ransomware.Jaff
Avira TR/FileCoder.64822
Microsoft Ransom:Win32/Jaffrans.A
Arcabit Trojan.Generic.D4D8BE8
ZoneAlarm Trojan-Ransom.Win32.Crypren.adsk
GData Win32.Trojan-Ransom.Jaff.C
AhnLab-V3 Trojan/Win32.JaffCrypto.R200746
Acronis suspicious
McAfee Generic.abu
MAX malware (ai score=100)
VBA32 SScope.TrojanRansom.WannaCry
Panda Trj/WLT.C
TrendMicro-HouseCall Ransom_CRYPJAFF.ENF
Rising Ransom.Crypren!8.1D6C (KTSE)
Ikarus Trojan-Ransom.Jaff
Fortinet W32/Jaff.ED11!tr.ransom
AVG Win32:Trojan-gen
Paloalto generic.ml
Qihoo-360 Win32/Ransom.Filecoder.HwcBINsA

How to remove Win32/Filecoder.Jaff.A 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.Jaff.A 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.Jaff.A 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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