Win32:TeslaCrypt-F [Trj]

Written by Robert Bailey

What is Win32:TeslaCrypt-F [Trj] infection?

In this article you will find regarding the interpretation of Win32:TeslaCrypt-F [Trj] and its adverse impact on your computer system. Such ransomware are a type of malware that is clarified by online scams to require paying the ransom by a target.

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Most of the cases, Win32:TeslaCrypt-F [Trj] infection will certainly advise its targets to start funds move for the function of reducing the effects of the changes that the Trojan infection has introduced to the victim’s device.

Win32:TeslaCrypt-F [Trj] 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.
  • 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: Spanish (Modern);
  • Uses Windows utilities for basic functionality;
  • 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 copy of itself;
  • Creates a known TeslaCrypt/AlphaCrypt ransomware decryption instruction / key file.;
  • 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 records situated on the target’s hard disk drive — so the victim can no longer make use of the data;
  • Preventing regular accessibility to the victim’s workstation;

Win32:TeslaCrypt-F [Trj]

One of the most regular networks through which Win32:TeslaCrypt-F [Trj] Ransomware are infused are:

  • By methods of phishing emails;
  • As a consequence of individual ending up on a source that hosts a destructive software program;

As soon as the Trojan is efficiently infused, it will certainly either cipher the information on the victim’s computer or protect against the tool from working in an appropriate fashion – while likewise putting a ransom note that points out the requirement for the sufferers to effect the settlement for the objective of decrypting the files or recovering the file system back to the first problem. In most circumstances, the ransom money note will certainly come up when the client reboots the PC after the system has currently been damaged.

Win32:TeslaCrypt-F [Trj] circulation networks.

In numerous corners of the globe, Win32:TeslaCrypt-F [Trj] expands by leaps and also bounds. However, the ransom money notes and also tricks of obtaining the ransom money quantity may differ depending on particular local (local) setups. The ransom notes and methods of extorting the ransom money quantity might vary depending on particular neighborhood (regional) settings.

Ransomware injection

For example:

    Faulty signals concerning unlicensed software program.

    In particular locations, the Trojans typically wrongfully report having spotted some unlicensed applications made it possible for on the victim’s device. The sharp after that requires the individual to pay the ransom.

    Faulty declarations about unlawful content.

    In nations where software piracy is less popular, this technique is not as reliable for the cyber frauds. Additionally, the Win32:TeslaCrypt-F [Trj] popup alert may incorrectly assert to be deriving from a police establishment and will certainly report having situated child porn or other unlawful data on the tool.

    Win32:TeslaCrypt-F [Trj] popup alert may incorrectly claim to be obtaining from a legislation enforcement institution as well as will report having located kid porn or other unlawful data on the gadget. The alert will similarly consist of a need for the individual to pay the ransom.

Technical details

File Info:

crc32: F2D63FB1
md5: 12b4f061485a484b5ce687ebef58fd7e
name: 12B4F061485A484B5CE687EBEF58FD7E.mlw
sha1: e8763d1691b314a737d54265d5d6beae0b0fa9b3
sha256: aa5efa35e8afe1019c63dd4c174629a3c2fe9b38137a3245238436b159d30b95
sha512: ab1311f951f41ba5a33252d4bca79d9927219bef07f5cae1076457af74e6231dbc7e24f1c63380fc189a92c6c07fd21b96b42cc636207f028375c78302fbefe3
ssdeep: 6144:CvEWmqsGPqOba+/lXfPgYQrKeJIVzhAapzPWT8TnF/XF:o69GPfaGPgYpqIVFVZjFF
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32:TeslaCrypt-F [Trj] also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.FamVT.RazyNHmC.Trojan
K7AntiVirus Riskware ( 0040eff71 )
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.3401
Cynet Malicious (score: 100)
CAT-QuickHeal Ransom.Crowti.WR7
ALYac Trojan.CryptoLocker.BC
Cylance Unsafe
Zillya Adware.BrowseFox.Win32.255450
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/Tescrypt.b90ecc5b
K7GW Riskware ( 0040eff71 )
Cybereason malicious.1485a4
Baidu Win32.Trojan.Kryptik.va
Cyren W32/Ceeinject.VXTE-9013
ESET-NOD32 Win32/Filecoder.TeslaCrypt.I
Zoner Trojan.JS.37630
APEX Malicious
Avast Win32:TeslaCrypt-F [Trj]
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Trojan.CryptoLocker.BC
NANO-Antivirus Trojan.Win32.Encoder.dzniti
ViRobot Trojan.Win32.Kryptik.Gen.A
SUPERAntiSpyware Trojan.Agent/Gen-Kryptik
MicroWorld-eScan Trojan.CryptoLocker.BC
Tencent Malware.Win32.Gencirc.10c4e0ce
Ad-Aware Trojan.CryptoLocker.BC
Sophos ML/PE-A + Mal/Wonton-BZ
Comodo TrojWare.Win32.Midie.KNJ@6ayrnl
BitDefenderTheta Gen:NN.ZexaF.34628.uqW@aO5e!unV
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_CRYPTESLA.SMA4
McAfee-GW-Edition Ransom-Tescrypt!12B4F061485A
FireEye Generic.mg.12b4f061485a484b
Emsisoft Trojan.CryptoLocker.BC (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Yakes.euj
Webroot W32.Trojan.Gen
Avira TR/Crypt.XPACK.270852
eGambit Generic.Malware
Microsoft Ransom:Win32/Tescrypt.C
Arcabit Trojan.CryptoLocker.BC
AegisLab Trojan.Win32.Bitman.j!c
GData Trojan.CryptoLocker.BC
TACHYON Trojan/W32.Agent.337920.HL
AhnLab-V3 Trojan/Win32.Teslacrypt.R170683
Acronis suspicious
McAfee Ransom-Tescrypt!12B4F061485A
MAX malware (ai score=100)
VBA32 BScope.Trojan.Downloader
Malwarebytes Trojan.MalPack
Panda Trj/CI.A
TrendMicro-HouseCall Ransom_CRYPTESLA.SMA4
Rising Trojan.Win32.Kryptik.bb (CLOUD)
Ikarus Trojan.Win32.Crypt
Fortinet W32/Kryptik.EKDN!tr
AVG Win32:TeslaCrypt-F [Trj]
Qihoo-360 Win32/Ransom.Tescrypt.HgIASOUA

How to remove Win32:TeslaCrypt-F [Trj] virus?

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:TeslaCrypt-F [Trj] 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:TeslaCrypt-F [Trj] 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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