Win32/Smokeloader.A

Written by Robert Bailey

What is Win32/Smokeloader.A infection?

In this short article you will certainly locate about the meaning of Win32/Smokeloader.A and its adverse impact on your computer system. Such ransomware are a form of malware that is clarified by on the internet frauds to require paying the ransom money by a sufferer.

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In the majority of the cases, Win32/Smokeloader.A ransomware will certainly advise its targets to initiate funds transfer for the objective of reducing the effects of the modifications that the Trojan infection has actually introduced to the sufferer’s device.

Win32/Smokeloader.A Summary

These adjustments can be as complies with:

  • 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 (inter-process);
  • Injection (Process Hollowing);
  • Attempts to connect to a dead IP:Port (3 unique times);
  • 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.
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • Performs some HTTP requests;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Attempts to remove evidence of file being downloaded from the Internet;
  • Executed a process and injected code into it, probably while unpacking;
  • Detects Sandboxie through the presence of a library;
  • A system process is generating network traffic likely as a result of process injection;
  • 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.
  • Checks the presence of disk drives in the registry, possibly for anti-virtualization;
  • Creates a copy of itself;
  • Ciphering the files found on the victim’s hard drive — so the sufferer can no longer utilize the information;
  • Preventing normal 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.
Similar behavior
Related domains
www.bing.com Static AI – Malicious PE – Ransomware
trenkulotd.xyz Static AI – Malicious PE – Ransomware
www.adobe.com Static AI – Malicious PE – Ransomware

Win32/Smokeloader.A

The most common networks through which Win32/Smokeloader.A Trojans are infused are:

  • By ways of phishing e-mails;
  • As an effect of individual ending up on a source that holds a destructive software;

As quickly as the Trojan is effectively injected, it will certainly either cipher the data on the target’s PC or protect against the tool from working in a proper way – while additionally positioning a ransom note that states the demand for the sufferers to effect the payment for the purpose of decrypting the papers or bring back the documents system back to the preliminary problem. In a lot of instances, the ransom note will certainly turn up when the client reboots the COMPUTER after the system has actually currently been harmed.

Win32/Smokeloader.A distribution networks.

In various corners of the world, Win32/Smokeloader.A expands by jumps and also bounds. However, the ransom notes as well as methods of obtaining the ransom quantity might vary depending upon specific neighborhood (regional) settings. The ransom money notes and also methods of obtaining the ransom money amount might differ depending on certain regional (local) setups.

Ransomware injection

As an example:

    Faulty signals regarding unlicensed software.

    In particular areas, the Trojans often wrongfully report having spotted some unlicensed applications enabled on the target’s device. The sharp after that requires the individual to pay the ransom money.

    Faulty statements concerning illegal material.

    In countries where software application piracy is less preferred, this method is not as reliable for the cyber fraudulences. Conversely, the Win32/Smokeloader.A popup alert might incorrectly declare to be stemming from a police establishment and will certainly report having situated youngster pornography or other prohibited data on the tool.

    Win32/Smokeloader.A popup alert might wrongly declare to be acquiring from a law enforcement organization and will certainly report having located child porn or various other illegal information on the gadget. The alert will in a similar way include a demand for the user to pay the ransom money.

Technical details

File Info:

crc32: 8366D60B
md5: 4cea670eb719dfa4739976d02719a26f
name: 4CEA670EB719DFA4739976D02719A26F.mlw
sha1: 991c8035995b711ef9fc02a1b65de3dda5ca641e
sha256: ddf759e23605043da7b0f19f26e6eaf4f4953ce0b8b73456b68fcd389de3133e
sha512: fb9cabc6887737a89f7e17f7dbf937adfb785db1ec82d07013579ee86c082cdd38b26ec1bfee367bed9b7ffc8ff56b43ca3d46d4e7602e3bbec18fe70fad3c98
ssdeep: 3072:b+9VXE1Glp8LCgqdVJqOFsRgytC70GLj55:bN1uIejJqOFsRgytApHz
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Smokeloader.A also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetectVM.malware1
Elastic malicious (high confidence)
MicroWorld-eScan Trojan.GenericKDZ.40157
FireEye Generic.mg.4cea670eb719dfa4
McAfee GenericRXCF-UX!4CEA670EB719
Malwarebytes Spyware.LokiBot
VIPRE Trojan.Win32.Generic!BT
AegisLab Trojan.Win32.Ramnit.toUN
Sangfor Malware
K7AntiVirus Trojan-Downloader ( 004f85331 )
BitDefender Trojan.GenericKDZ.40157
K7GW Trojan-Downloader ( 004f85331 )
CrowdStrike win/malicious_confidence_100% (W)
Cyren W32/S-a837224f!Eldorado
Symantec Packed.Generic.525
APEX Malicious
Avast FileRepMalware
Kaspersky HEUR:Trojan.Win32.Generic
NANO-Antivirus Trojan.Win32.Androm.erxbll
Tencent Malware.Win32.Gencirc.10bafc83
Ad-Aware Trojan.GenericKDZ.40157
Emsisoft Trojan.GenericKDZ.40157 (B)
Comodo Malware@#38p8qbqpq43ni
F-Secure Heuristic.HEUR/AGEN.1106533
DrWeb Trojan.DownLoader25.22187
TrendMicro TSPY_EMOTET.SMD2
McAfee-GW-Edition BehavesLike.Win32.Generic.ch
Sophos Mal/Generic-S
Ikarus Trojan.Win32.Crypt
Jiangmin Trojan.Generic.bgwog
Avira HEUR/AGEN.1106533
Antiy-AVL Trojan[Backdoor]/Win32.Androm
Arcabit Trojan.Generic.D9CDD
SUPERAntiSpyware Trojan.Agent/Gen-Kryptik
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Trojan.GenericKDZ.40157
Cynet Malicious (score: 100)
AhnLab-V3 Win-Trojan/MalPe34.Suspicious.X2029
Acronis suspicious
BitDefenderTheta Gen:NN.ZexaF.34804.kuW@aCKXVSn
ALYac Trojan.GenericKDZ.40157
MAX malware (ai score=80)
VBA32 BScope.Trojan.Downloader
Panda Trj/CI.A
ESET-NOD32 Win32/Smokeloader.A
TrendMicro-HouseCall TSPY_EMOTET.SMD2
Rising Malware.Obscure/Heur!1.A89E (CLOUD)
Yandex Trojan.Lebag!zRFqArlur6I
SentinelOne Static AI – Malicious PE – Ransomware
eGambit Unsafe.AI_Score_97%
Fortinet W32/GenKryptik.ASLS!tr
Webroot W32.Trojan.Gen
AVG FileRepMalware
Paloalto generic.ml
Qihoo-360 HEUR/QVM10.2.5EA3.Malware.Gen

How to remove Win32/Smokeloader.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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The is an excellent way to deal with recognizing and removing threats – using Gridinsoft Anti-Malware. This program will scan your PC, find and neutralize all suspicious processes.2.

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.

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Press “Install” button.

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Once installed, Anti-Malware will automatically run.

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Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for Win32/Smokeloader.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/Smokeloader.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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