Win32/Filecoder.Saturn.A

Written by Robert Bailey

What is Win32/Filecoder.Saturn.A infection?

In this article you will discover concerning the interpretation of Win32/Filecoder.Saturn.A as well as its negative impact on your computer. Such ransomware are a form of malware that is specified by on-line frauds to require paying the ransom money by a target.

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In the majority of the situations, Win32/Filecoder.Saturn.A infection will instruct its targets to initiate funds move for the purpose of neutralizing the amendments that the Trojan infection has presented to the victim’s tool.

Win32/Filecoder.Saturn.A Summary

These adjustments can be as adheres to:

  • 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;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • The executable is compressed using UPX;
  • Uses Windows utilities for basic functionality;
  • Detects Sandboxie through the presence of a library;
  • Attempts to delete volume shadow copies;
  • 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!
  • Modifies boot configuration settings;
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config;
  • 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;
  • Checks the version of Bios, possibly for anti-virtualization;
  • Detects VirtualBox through the presence of a registry key;
  • Clears Windows events or logs;
  • 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 papers found on the target’s hard drive — so the victim can no longer utilize the information;
  • Preventing regular access to the sufferer’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.Saturn.A

One of the most regular networks whereby Win32/Filecoder.Saturn.A Ransomware are injected are:

  • By means of phishing emails;
  • As a consequence of user winding up on a source that holds a harmful software program;

As quickly as the Trojan is efficiently infused, it will certainly either cipher the data on the victim’s computer or prevent the tool from operating in a correct way – while additionally placing a ransom money note that states the requirement for the victims to impact the payment for the objective of decrypting the papers or restoring the file system back to the initial condition. In many circumstances, the ransom money note will turn up when the customer restarts the COMPUTER after the system has actually currently been damaged.

Win32/Filecoder.Saturn.A distribution networks.

In various edges of the globe, Win32/Filecoder.Saturn.A grows by leaps and also bounds. Nonetheless, the ransom notes and tricks of extorting the ransom quantity may vary relying on specific regional (local) setups. The ransom notes and also methods of obtaining the ransom money amount may vary depending on specific local (regional) setups.

Ransomware injection

For instance:

    Faulty alerts about unlicensed software program.

    In certain locations, the Trojans usually wrongfully report having actually detected some unlicensed applications made it possible for on the target’s device. The alert then demands the user to pay the ransom money.

    Faulty declarations concerning prohibited material.

    In nations where software application piracy is less preferred, this approach is not as reliable for the cyber scams. Conversely, the Win32/Filecoder.Saturn.A popup alert may falsely claim to be deriving from a police establishment as well as will certainly report having situated child pornography or other unlawful data on the gadget.

    Win32/Filecoder.Saturn.A popup alert might falsely claim to be deriving from a regulation enforcement organization and will report having situated youngster porn or various other illegal information on the tool. The alert will similarly contain a demand for the individual to pay the ransom money.

Technical details

File Info:

crc32: ECB105CE
md5: b49ff6277b5d2be66b2f6137a2569f1c
name: B49FF6277B5D2BE66B2F6137A2569F1C.mlw
sha1: 6dd8e1f35fc06c867a2e8635d139bb6b4bb873a8
sha256: 706751775c94945a2c02bf0d6a7a6f76073f1eae1d120dce1dce66da6ab3ba50
sha512: 7f989d6cde0f1d045eb9a264af58868eb3a4718822f4c7076b685b3a16e826306a1a9e1f5b06d8916cfd430d76f5efb8f4c6fc3fc6b597e6e976d012f92751a8
ssdeep: 6144:lECtErs8tgErZjME96rk4WopQ1O7/6OSONLw:uoEs8NZjT96g0pQgrA2w
type: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

0: [No Data]

Win32/Filecoder.Saturn.A also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 00527a2e1 )
DrWeb Trojan.MulDrop7.65316
Cynet Malicious (score: 100)
ALYac Trojan.Ransom.Saturn
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/generic.ali2000010
K7GW Trojan ( 00527a2e1 )
Cybereason malicious.77b5d2
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Filecoder.Saturn.A
APEX Malicious
Avast Win32:Malware-gen
ClamAV Win.Trojan.Saturn-6454613-0
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Generic.Ransom.GarrantDecrypt.B.8CB740DD
NANO-Antivirus Trojan.Win32.RansomHeur.eyludk
MicroWorld-eScan Generic.Ransom.GarrantDecrypt.B.8CB740DD
Ad-Aware Generic.Ransom.GarrantDecrypt.B.8CB740DD
Sophos Troj/Satran-A
Comodo Malware@#22e47wasj5zdr
BitDefenderTheta AI:Packer.1CDA13DD1F
VIPRE Trojan.Win32.Generic!BT
TrendMicro Mal_BTCWare-1
McAfee-GW-Edition BehavesLike.Win32.Generic.dc
FireEye Generic.mg.b49ff6277b5d2be6
Emsisoft Generic.Ransom.GarrantDecrypt.B.8CB740DD (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Generic.cqrof
Webroot W32.Trojan.Gen
Avira HEUR/AGEN.1122976
eGambit Unsafe.AI_Score_100%
Microsoft Ransom:Win32/Saturn.A
AegisLab Trojan.Win32.Generic.4!c
GData Win32.Trojan-Ransom.Filecoder.CF@gen
AhnLab-V3 Trojan/Win32.Khalesi.C2411194
McAfee GenericRXAA-AA!B49FF6277B5D
MAX malware (ai score=96)
VBA32 Trojan.Khalesi
Panda Trj/GdSda.A
TrendMicro-HouseCall Mal_BTCWare-1
Tencent Win32.Trojan.Filecoder.Pfjj
Ikarus Trojan-Ransom.FileCrypter
Fortinet W32/Saturn.A!tr
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Ransom.Generic.HwsBLv8A

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