Ransom:MSIL/JigsawLocker!rfn

What is Ransom:MSIL/JigsawLocker!rfn infection?

In this short article you will discover about the definition of Ransom:MSIL/JigsawLocker!rfn and also its negative impact on your computer system. Such ransomware are a type of malware that is clarified by on-line frauds to demand paying the ransom money by a target.

Most of the cases, Ransom:MSIL/JigsawLocker!rfn virus will advise its victims to launch funds move for the objective of reducing the effects of the changes that the Trojan infection has presented to the target’s tool.

Ransom:MSIL/JigsawLocker!rfn Summary

These alterations can be as complies with:

  • 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.
  • 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.
  • 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
  • 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.
  • Creates a copy of itself;
  • Unusual version info supplied for binary;
  • Ciphering the documents situated on the target’s hard drive — so the target can no longer use the information;
  • Preventing regular 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.

Ransom:MSIL/JigsawLocker!rfn

The most common networks whereby Ransom:MSIL/JigsawLocker!rfn are injected are:

  • By ways of phishing emails;
  • As a consequence of individual winding up on a resource that organizes a destructive software program;

As quickly as the Trojan is successfully infused, it will either cipher the information on the victim’s PC or stop the tool from operating in a correct fashion – while additionally putting a ransom money note that points out the demand for the targets to effect the repayment for the function of decrypting the papers or restoring the documents system back to the initial problem. In a lot of instances, the ransom money note will turn up when the client restarts the PC after the system has already been damaged.

Ransom:MSIL/JigsawLocker!rfn distribution channels.

In various corners of the world, Ransom:MSIL/JigsawLocker!rfn expands by leaps as well as bounds. Nevertheless, the ransom notes as well as methods of extorting the ransom money quantity may vary relying on particular local (local) settings. The ransom money notes and also methods of extorting the ransom money amount might vary depending on certain regional (local) setups.

Ransomware injection

As an example:

    Faulty signals about unlicensed software.

    In particular areas, the Trojans commonly wrongfully report having spotted some unlicensed applications made it possible for on the target’s device. The sharp then demands the user to pay the ransom.

    Faulty declarations concerning unlawful content.

    In countries where software program piracy is less prominent, this approach is not as efficient for the cyber fraudulences. Conversely, the Ransom:MSIL/JigsawLocker!rfn popup alert may falsely claim to be stemming from a law enforcement organization and also will certainly report having located youngster porn or various other unlawful information on the device.

    Ransom:MSIL/JigsawLocker!rfn popup alert may wrongly claim to be deriving from a law enforcement institution and will report having located youngster pornography or other illegal data on the tool. The alert will likewise include a requirement for the user to pay the ransom money.

Technical details

File Info:

crc32: 1A363547md5: 6d1cc476e944bee6fa720b5881c9d8acname: 6D1CC476E944BEE6FA720B5881C9D8AC.mlwsha1: c0755e33e5a0557b0e69c7b7b468e93a29e213aasha256: e2310969be5df2d897567a540436ccc6cddcd0d2bf0ca87bf3b9550923f9c9absha512: 2130cbfa3e5d4fca72547388e0b3cfdf2c620c5fda11e8ca424891a9f5cf853bb30272b52258bd74c7e3b3dc6522cbb11a4e42d6d417323d4b65f24eb00e73e5ssdeep: 6144:uHD8+eh3DSS3guO2YBW0avwhQ2+MaqzYOxQ4rCt0O:uHIjpSWvOPBsvwO2+MaqkOotype: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0LegalCopyright: Microsoft CooporationAssembly Version: 31.0.1.5411InternalName: BTC MultiGrabber.exeFileVersion: 31.0.1.5411CompanyName: LegalTrademarks: Comments: ProductName: Host Process for Windows ServicesProductVersion: 31.0.1.5411FileDescription: Host Process for Windows ServicesOriginalFilename: BTC MultiGrabber.exe

Ransom:MSIL/JigsawLocker!rfn also known as:

GridinSoft Trojan.Ransom.Gen
Elastic malicious (high confidence)
MicroWorld-eScan DeepScan:Generic.MSIL.Ransomware.Jigsaw.6416D1F0
FireEye Generic.mg.6d1cc476e944bee6
CAT-QuickHeal Trojan.Fsysna
Qihoo-360 Win32/Trojan.385
ALYac DeepScan:Generic.MSIL.Ransomware.Jigsaw.6416D1F0
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
Sangfor Trojan.Win32.Save.a
K7AntiVirus Password-Stealer ( 004d6a1c1 )
BitDefender DeepScan:Generic.MSIL.Ransomware.Jigsaw.6416D1F0
K7GW Password-Stealer ( 004d6a1c1 )
Cybereason malicious.6e944b
BitDefenderTheta Gen:NN.ZemsilF.34590.wm0@a0Y22rf
Symantec ML.Attribute.HighConfidence
APEX Malicious
Avast Win32:Malware-gen
Kaspersky Trojan.Win32.Fsysna.ekia
Alibaba Trojan:Win32/Fsysna.47c1e820
NANO-Antivirus Trojan.Win32.BitCoinMiner.eqjvns
ViRobot Trojan.Win32.Z.Fsysna.373760
Tencent Malware.Win32.Gencirc.114b07a9
Ad-Aware DeepScan:Generic.MSIL.Ransomware.Jigsaw.6416D1F0
Emsisoft DeepScan:Generic.MSIL.Ransomware.Jigsaw.6416D1F0 (B)
Comodo Malware@#22ezzcu3eofsp
F-Secure Heuristic.HEUR/AGEN.1101058
DrWeb Trojan.MulDrop7.28891
Zillya Trojan.Fsysna.Win32.14648
TrendMicro Ransom.MSIL.JIGSAW.SMB
McAfee-GW-Edition GenericRXBW-AA!6D1CC476E944
Sophos Mal/Generic-R + Troj/Jigsaw-K
Ikarus Trojan.MSIL.PSW
Jiangmin Trojan.Fsysna.hqz
Avira HEUR/AGEN.1101058
Antiy-AVL Trojan/Win32.Fsysna
Microsoft Ransom:MSIL/JigsawLocker!rfn
Arcabit DeepScan:Generic.MSIL.Ransomware.Jigsaw.6416D1F0
ZoneAlarm Trojan.Win32.Fsysna.ekia
GData MSIL.Trojan.ClipBanker.C
Cynet Malicious (score: 85)
AhnLab-V3 Trojan/Win32.RL_Fsysna.C4249603
McAfee GenericRXBW-AA!6D1CC476E944
MAX malware (ai score=89)
VBA32 Trojan.Fsysna
Malwarebytes Trojan.BitCoinStealer
Panda Trj/CI.A
ESET-NOD32 a variant of MSIL/PSW.CoinStealer.Z
TrendMicro-HouseCall Ransom.MSIL.JIGSAW.SMB
Rising Ransom.JigsawLocker!8.52DD (CLOUD)
Yandex Trojan.Fsysna!I6KV0IYl2MA
SentinelOne Static AI – Malicious PE
eGambit Unsafe.AI_Score_99%
Fortinet MSIL/Jigsaw.K!tr
AVG Win32:Malware-gen
Paloalto generic.ml
CrowdStrike win/malicious_confidence_100% (W)

How to remove Ransom:MSIL/JigsawLocker!rfn virus?

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

Run the setup file.

Run Setup.exe
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 Scanning

Click on “Clean Now”.

GridinSoft Anti-Malware Scan Result

Are Your Protected?

Full version of GridinSoft

If the guide doesn’t help you to remove Ransom:MSIL/JigsawLocker!rfn you can always ask me in the comments for getting help.

References

    About the author

    Robert Bailey

    Security engineer focused on malware behavior, removal workflows, and Windows hardening. Robert reviews threat articles for practical accuracy, checking detection names, symptoms, and cleanup steps before publication.

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