Worm:Win32/DarkSnow.A

What is Worm:Win32/DarkSnow.A infection?

In this short article you will certainly find about the definition of Worm:Win32/DarkSnow.A as well as its adverse impact on your computer. Such ransomware are a form of malware that is specified by online frauds to demand paying the ransom money by a victim.

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In the majority of the cases, Worm:Win32/DarkSnow.A ransomware will certainly advise its sufferers to start funds transfer for the objective of counteracting the modifications that the Trojan infection has actually introduced to the target’s device.

Worm:Win32/DarkSnow.A Summary

These modifications 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.
  • 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.
  • A process attempted to delay the analysis task.;
  • Unconventionial language used in binary resources: Chinese (Simplified);
  • 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.
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Creates a copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the documents located on the target’s hard disk drive — so the target can no more use the information;
  • Preventing routine access to the sufferer’s workstation;

Worm:Win32/DarkSnow.A

One of the most normal networks through which Worm:Win32/DarkSnow.A are injected are:

  • By ways of phishing emails;
  • As an effect of individual winding up on a source that hosts a destructive software;

As soon as the Trojan is successfully injected, it will certainly either cipher the data on the target’s PC or prevent the tool from functioning in an appropriate fashion – while likewise positioning a ransom money note that points out the need for the targets to impact the repayment for the function of decrypting the papers or bring back the documents system back to the preliminary problem. In most instances, the ransom note will certainly show up when the client reboots the COMPUTER after the system has actually currently been damaged.

Worm:Win32/DarkSnow.A circulation channels.

In numerous corners of the globe, Worm:Win32/DarkSnow.A grows by jumps as well as bounds. However, the ransom notes as well as tricks of extorting the ransom money quantity may vary depending upon certain regional (regional) setups. The ransom money notes and also tricks of extorting the ransom money amount may vary depending on certain local (regional) setups.

Ransomware injection

For instance:

    Faulty informs concerning unlicensed software application.

    In particular locations, the Trojans commonly wrongfully report having actually found some unlicensed applications allowed on the target’s device. The sharp after that requires the individual to pay the ransom.

    Faulty statements regarding unlawful web content.

    In countries where software application piracy is much less preferred, this approach is not as efficient for the cyber scams. Additionally, the Worm:Win32/DarkSnow.A popup alert may falsely claim to be stemming from a police institution as well as will certainly report having located kid pornography or various other unlawful data on the device.

    Worm:Win32/DarkSnow.A popup alert might wrongly assert to be deriving from a regulation enforcement institution as well as will report having located youngster porn or other prohibited data on the tool. The alert will in a similar way consist of a demand for the user to pay the ransom money.

Technical details

File Info:

crc32: 71C0536F
md5: 54d66cd73ef847de59ad7675120262b4
name: 54D66CD73EF847DE59AD7675120262B4.mlw
sha1: 6d31a5b6549a5477edb585c590a885c10a3c8889
sha256: 9e1088d32b58c8020e176920133f79dbbe7e8bc54d87ff400ba9f945d2cbaf42
sha512: 07864269575089ad4457600af3693995c3a2b232a0b181c89d6221d4a2d43d9fcec4e176763d3e627c6f1e44d79ce18976fcf4bb726e972b2d109c294ec09870
ssdeep: 384:OJVSgUsQYHrWgHa3KQd7fboLPSQT3bjOq79+wIWCHhpP82PolnqitGio8v4NIcJ:OGgUHYmaDrbjBJ+wIWCnNPinFtGiRcJ
type: PE32 executable (GUI) Intel 80386, for MS Windows, PECompact2 compressed

Version Info:

0: [No Data]

Worm:Win32/DarkSnow.A also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
DrWeb Worm.Siggen.12153
Cynet Malicious (score: 100)
CAT-QuickHeal Worm.DarkSnow.A.mue
ALYac Gen:Trojan.Heur.ciWfrXoaCLabb
Cylance Unsafe
Zillya Virus.Whietelce.Win32.1
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Cybereason malicious.73ef84
Baidu Win32.Worm.WhiteIce.a
Cyren W32/FakeFolder.P.gen!Eldorado
Symantec W32.Darksnow!inf
ESET-NOD32 Win32/Whiteice.A
APEX Malicious
TotalDefense Win32/Blic.A
Avast Win32:Malware-gen
ClamAV Win.Worm.Whiteice-4
Kaspersky Worm.Win32.WhiteIce.a
BitDefender Gen:Trojan.Heur.ciWfrXoaCLabb
NANO-Antivirus Trojan.Win32.PEPM.fhnbzh
ViRobot Worm.Win32.A.WhiteIce.76288
MicroWorld-eScan Gen:Trojan.Heur.ciWfrXoaCLabb
Tencent Trojan.Win32.Genome.aad
Ad-Aware Gen:Trojan.Heur.ciWfrXoaCLabb
Sophos ML/PE-A + W32/Blic-A
Comodo Win32.Whiteice.A@3s8d
BitDefenderTheta AI:Packer.AA6D653C1D
VIPRE Trojan.Win32.Generic.pak!cobra
TrendMicro PE_DARKSNOW.A-O
McAfee-GW-Edition BehavesLike.Win32.VirRansom.nc
FireEye Generic.mg.54d66cd73ef847de
Emsisoft Gen:Trojan.Heur.ciWfrXoaCLabb (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan/Small.alp
Avira WORM/Rbot.Gen
eGambit Unsafe.AI_Score_99%
Kingsoft Win32.Heur.KVM007.a.(kcloud)
Microsoft Worm:Win32/DarkSnow.A
Arcabit Trojan.Heur.ciWfrXoaCLabb
ZoneAlarm HEUR:Trojan.Win32.Invader
GData Gen:Trojan.Heur.ciWfrXoaCLabb
TACHYON Worm/W32.WhiteIce.33792
AhnLab-V3 Worm/Win32.WhiteIce.R59244
McAfee W32/Blic
MAX malware (ai score=80)
Malwarebytes Malware.AI.3976187396
Panda Trj/Genetic.gen
TrendMicro-HouseCall PE_DARKSNOW.A-O
Rising Worm.Win32.Autorun.fmz (RDMK:cmRtazpxmvnaOO3402AtUxHS3+M4)
Yandex Trojan.GenAsa!p5SuMsQVNdo
Ikarus Win32.Blic
MaxSecure Trojan.Malware.172598.susgen
Fortinet W32/Whiteice.A
AVG Win32:Malware-gen
Qihoo-360 VirusOrg.Win32.BlackIce.A

How to remove Worm:Win32/DarkSnow.A ransomware?

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

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 Worm:Win32/DarkSnow.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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Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Worm:Win32/DarkSnow.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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