TrojanDropper:Win32/Slipafext.A

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey

What is TrojanDropper:Win32/Slipafext.A infection?

In this post you will locate about the interpretation of TrojanDropper:Win32/Slipafext.A and its negative impact on your computer. Such ransomware are a type of malware that is clarified by online frauds to demand paying the ransom money by a victim.

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Most of the instances, TrojanDropper:Win32/Slipafext.A ransomware will instruct its targets to initiate funds transfer for the objective of reducing the effects of the modifications that the Trojan infection has actually presented to the victim’s gadget.

TrojanDropper:Win32/Slipafext.A Summary

These adjustments can be as complies with:

  • Injection (inter-process);
  • 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;
  • Attempts to connect to a dead IP:Port (1 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.
  • Possible date expiration check, exits too soon after checking local time;
  • At least one IP Address, Domain, or File Name was found in a crypto call;
  • Reads data out of its own binary image. The trick that allows the malware to read data out of your computer’s memory.

    Everything you run, type, or click on your computer goes through the memory. This includes passwords, bank account numbers, emails, and other confidential information. With this vulnerability, there is the potential for a malicious program to read that data.

  • A process created a hidden window;
  • 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.
  • Uses Windows utilities for basic functionality;
  • Sniffs keystrokes;
  • Attempts to remove evidence of file being downloaded from the Internet;
  • Attempts to stop active services;
  • 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 behavior characteristic of Nanocore RAT;
  • Attempts to disable UAC.

    User Account Control or just UAC is a part of the Windows security system which prevents apps from making unwanted changes on PC.

    UAC includes several technologies 1:

    • File and egistry Virtualization;
    • Same-desktop Elevation;
    • Filtered Token;
    • User Interface Privilege Isolation;
    • Protected Mode Internet Explorer;
    • Installer Detection;
  • Attempts to disable Windows Defender;
  • 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.
  • Attempts to modify user notification settings;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the papers situated on the victim’s disk drive — so the victim can no longer utilize the data;
  • Preventing regular accessibility to the sufferer’s workstation;
Similar behavior
Related domains
pi0n.ddns.net Ransom.Wannacry

TrojanDropper:Win32/Slipafext.A

One of the most regular channels through which TrojanDropper:Win32/Slipafext.A Trojans are injected are:

  • By means of phishing emails;
  • As an effect of customer ending up on a source that organizes a destructive software application;

As quickly as the Trojan is efficiently injected, it will certainly either cipher the information on the victim’s PC or avoid the tool from operating in a proper fashion – while also placing a ransom money note that points out the requirement for the sufferers to impact the payment for the purpose of decrypting the papers or bring back the data system back to the preliminary problem. In many circumstances, the ransom note will certainly come up when the client reboots the PC after the system has actually currently been damaged.

TrojanDropper:Win32/Slipafext.A circulation channels.

In various corners of the world, TrojanDropper:Win32/Slipafext.A expands by jumps and also bounds. Nevertheless, the ransom notes and techniques of extorting the ransom money amount might differ depending on certain local (local) setups. The ransom money notes and also tricks of extorting the ransom money amount might vary depending on certain local (local) setups.

Ransomware injection

For example:

    Faulty signals about unlicensed software.

    In certain locations, the Trojans frequently wrongfully report having actually identified some unlicensed applications enabled on the target’s gadget. The sharp after that requires the user to pay the ransom money.

    Faulty statements regarding illegal content.

    In nations where software piracy is less preferred, this method is not as effective for the cyber fraudulences. Additionally, the TrojanDropper:Win32/Slipafext.A popup alert may falsely assert to be originating from a law enforcement institution and will certainly report having located child pornography or various other prohibited information on the gadget.

    TrojanDropper:Win32/Slipafext.A popup alert might incorrectly claim to be acquiring from a law enforcement establishment as well as will certainly report having located child pornography or other prohibited data on the tool. The alert will in a similar way consist of a need for the user to pay the ransom money.

Technical details

File Info:

crc32: 1E0AA6E9
md5: 6d6931ff4084e7e4564758261ad7f4f1
name: 6D6931FF4084E7E4564758261AD7F4F1.mlw
sha1: 7751a4bcd235ef6a43188aa01f39840617ec098d
sha256: bc9204be92ac0bd373bc0153d02be668ad82d382ebcc112fa8c252e6f9c67080
sha512: 9a9837e92cc22a4a66eb2c498f33c877fe308608ff9577efb5bc2e983e093e94ed738574694795a963253f79a620ec6db1eaf20ade0048570c6690cb437789b3
ssdeep: 24576:8NA3R5drXQAwYlkkS9PBlfXcizzB0D8qVGf6bjL5Bj4r3FQIGTOS7Lmv+wnEq/sG:95VvkZ/1cclEVGojaVnGFJwnEq/mYj
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

TrojanDropper:Win32/Slipafext.A also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
K7AntiVirus Riskware ( 0040eff71 )
Cynet Malicious (score: 100)
CAT-QuickHeal Trojan.TiggrePMF.S4850539
ALYac Dropped:Generic.Starter.4.C5A28EBD
Cylance Unsafe
CrowdStrike win/malicious_confidence_100% (W)
Alibaba TrojanDropper:Win32/NanoBot.d1d7c22b
K7GW Riskware ( 0040eff71 )
Cybereason malicious.f4084e
Cyren W32/Nitol.AB.gen!Eldorado
Symantec Ransom.Wannacry
APEX Malicious
Avast Win32:Malware-gen
Kaspersky Trojan.Win32.NanoBot.yip
BitDefender Trojan.GenericKD.43437024
NANO-Antivirus Trojan.Win32.NanoBot.hnbzin
MicroWorld-eScan Trojan.GenericKD.43437024
Tencent Win32.Trojan.Nanobot.Wqxd
Sophos Mal/Generic-S
Comodo Malware@#4mj7mp62tyro
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Suspicioustrojan.tc
FireEye Generic.mg.6d6931ff4084e7e4
Emsisoft Trojan.GenericKD.43437024 (B)
Avira TR/AD.Nanocore.uobti
Kingsoft Win32.Troj.NanoBot.y.(kcloud)
Microsoft TrojanDropper:Win32/Slipafext.A
Arcabit Trojan.Generic.D296CBE0
ZoneAlarm Trojan.Win32.NanoBot.yip
GData Dropped:Generic.Starter.4.C5A28EBD
McAfee Artemis!6D6931FF4084
MAX malware (ai score=84)
VBA32 Trojan.NanoBot
Rising [email protected] (RDMK:rF1ya0/egu8eu+Hmt55EfA)
AVG Win32:Malware-gen
Paloalto generic.ml

How to remove TrojanDropper:Win32/Slipafext.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 GridinSoft3.

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 TrojanDropper:Win32/Slipafext.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 TrojanDropper:Win32/Slipafext.A you can always ask me in the comments for getting help.

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References

  1. Microsoft Ignite: How to disable User Account Control (UAC) on Windows Server
  2. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
  3. More information about GridinSoft products: https://gridinsoft.com/comparison

About the author

Robert Bailey

I'm Robert Bailey, a passionate Security Engineer with a deep fascination for all things related to malware, reverse engineering, and white hat ethical hacking.

As a white hat hacker, I firmly believe in the power of ethical hacking to bolster security measures. By identifying vulnerabilities and providing solutions, I contribute to the proactive defense of digital infrastructures.

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