Win32/Injector.CSLF

Written by Robert Bailey

What is Win32/Injector.CSLF infection?

In this article you will discover regarding the meaning of Win32/Injector.CSLF and also its negative effect on your computer system. Such ransomware are a type of malware that is specified by on the internet frauds to require paying the ransom money by a target.

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In the majority of the situations, Win32/Injector.CSLF infection will instruct its targets to launch funds move for the function of counteracting the changes that the Trojan infection has actually presented to the sufferer’s tool.

Win32/Injector.CSLF Summary

These modifications 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);
  • Compression (or decompression);
  • 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.
  • 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.
  • Unconventionial language used in binary resources: Chinese (Traditional);
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses Windows utilities for basic functionality;
  • Executed a process and injected code into it, probably while unpacking;
  • Attempts to remove evidence of file being downloaded from the Internet;
  • Attempts to delete volume shadow copies;
  • Exhibits behavior characteristic of Alphacrypt/Teslacrypt ransomware;
  • 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
  • Writes a potential ransom message to disk;
  • 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 identify installed AV products by registry key;
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the documents located on the victim’s hard drive — so the target can no more utilize the data;
  • 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.

Win32/Injector.CSLF

One of the most regular networks whereby Win32/Injector.CSLF Ransomware are infused are:

  • By ways of phishing e-mails;
  • As a repercussion of customer ending up on a source that hosts a harmful software application;

As quickly as the Trojan is successfully infused, it will certainly either cipher the information on the sufferer’s computer or avoid the device from working in a correct way – while additionally positioning a ransom money note that points out the need for the targets to impact the repayment for the objective of decrypting the papers or recovering the file system back to the initial problem. In many instances, the ransom money note will come up when the client reboots the PC after the system has currently been damaged.

Win32/Injector.CSLF distribution channels.

In numerous corners of the globe, Win32/Injector.CSLF expands by jumps as well as bounds. However, the ransom money notes and also techniques of extorting the ransom quantity might differ depending on particular local (local) settings. The ransom money notes as well as methods of obtaining the ransom money amount may differ depending on particular local (regional) settings.

Ransomware injection

For example:

    Faulty alerts about unlicensed software program.

    In particular locations, the Trojans often wrongfully report having actually spotted some unlicensed applications enabled on the target’s device. The alert after that demands the customer to pay the ransom money.

    Faulty declarations about prohibited content.

    In nations where software application piracy is much less prominent, this technique is not as efficient for the cyber frauds. Additionally, the Win32/Injector.CSLF popup alert may wrongly declare to be originating from a police institution and also will certainly report having situated kid pornography or other illegal information on the device.

    Win32/Injector.CSLF popup alert might wrongly assert to be deriving from a legislation enforcement institution and also will report having located kid porn or other illegal data on the device. The alert will likewise consist of a requirement for the customer to pay the ransom.

Technical details

File Info:

crc32: 4176DBB7
md5: 6f7abbc706baecf6e86cde729475dc7d
name: 6F7ABBC706BAECF6E86CDE729475DC7D.mlw
sha1: 00a55e2ae828f928770fdd1c59da361198fba382
sha256: 85e3772d5502b9f5251843b3884788ab6c4d44af761900c787d36e1d5586244c
sha512: 70b80ff7efeac45dc3cbaeb5b5a3b4f774dd3f61c08801fe43c5a086e8372ba199ea9f676ab3ceb9dd4d5332ebd5db79616460496632da831a51b21753f61092
ssdeep: 12288:PsEXei41jA1WnzVSxq5p1qHVXACWOEogk3pmIc5A1WnzVSxq5p1qH:PsEX341jA1wBSggHlpp3r0A1wBSggH
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright (C) 2016
InternalName: Expostulations
FileVersion: 0.185.254.76
CompanyName: eSafeLine
PrivateBuild: 74, 58, 239, 159
LegalTrademarks: Fleece
Comments: Heavies
ProductName: Imploded Fireproof
SpecialBuild: 0.29.164.155
ProductVersion: 0.15.17.172
FileDescription: Incitements Gratis Flashier
OriginalFilename: Forgetmenotsl.EXE

Win32/Injector.CSLF also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
K7AntiVirus Trojan ( 0055e3991 )
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.3947
Cynet Malicious (score: 100)
CAT-QuickHeal Ransom.Teslacrypt.OL4
ALYac Trojan.CryptoLocker.BX
Cylance Unsafe
Zillya Trojan.Injector.Win32.362949
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
Alibaba Ransom:Win32/Tescrypt.ed288ae5
K7GW Trojan ( 0055e3991 )
Cybereason malicious.706bae
Baidu Win32.Trojan.Filecoder.k
Cyren W32/S-708004d4!Eldorado
Symantec Ransom.TeslaCrypt!g4
ESET-NOD32 a variant of Win32/Injector.CSLF
APEX Malicious
Avast Win32:Malware-gen
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Trojan.CryptoLocker.BX
NANO-Antivirus Trojan.Win32.Encoder.eajssi
ViRobot Trojan.Win32.TeslaCrypt.Gen.C
SUPERAntiSpyware Trojan.Agent/Gen-Dropper
MicroWorld-eScan Trojan.CryptoLocker.BX
Tencent Malware.Win32.Gencirc.10c3231c
Ad-Aware Trojan.CryptoLocker.BX
Sophos Mal/Generic-R + Mal/Ransom-EK
Comodo Malware@#3shd6fqquxnpq
BitDefenderTheta Gen:NN.ZexaF.34628.Lq0@aS7mzCjj
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_HPCRYPTESLA.SM2
McAfee-GW-Edition BehavesLike.Win32.Worm.jc
FireEye Generic.mg.6f7abbc706baecf6
Emsisoft Trojan.CryptoLocker.BX (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Banker.Shifu.dw
Webroot W32.Adware.Gen
Avira HEUR/AGEN.1111332
eGambit Generic.Malware
Kingsoft Win32.Troj.GenericKD.v.(kcloud)
Microsoft Ransom:Win32/Tescrypt.D
Arcabit Trojan.CryptoLocker.BX
AegisLab Trojan.Win32.Generic.4!c
GData Trojan.CryptoLocker.BX
AhnLab-V3 Win-Trojan/Cryptolocker.Gen
Acronis suspicious
McAfee Ransomware-FEB!6F7ABBC706BA
MAX malware (ai score=100)
VBA32 TrojanBanker.Shifu
Panda Trj/TeslaCrypt.A
TrendMicro-HouseCall Ransom_HPCRYPTESLA.SM2
Rising Trojan.Ransom-Tesla!1.A322 (CLOUD)
Yandex Trojan.Injector!ASO8bpSUGc8
Ikarus Trojan.Win32.Filecoder
Fortinet W32/Kryptik.EOVH!tr
AVG Win32:Malware-gen
Qihoo-360 Win32/Ransom.Tescrypt.HwcBEpsA

How to remove Win32/Injector.CSLF 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 Win32/Injector.CSLF 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:

Full version of GridinSoft

Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Win32/Injector.CSLF 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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