Win32:TeslaCrypt-CV [Trj]

Written by Robert Bailey

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

In this post you will certainly find about the meaning of Win32:TeslaCrypt-CV [Trj] as well as its negative effect on your computer system. Such ransomware are a form of malware that is clarified by on-line fraudulences to demand paying the ransom money by a sufferer.

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In the majority of the instances, Win32:TeslaCrypt-CV [Trj] virus will certainly advise its victims to start funds transfer for the function of counteracting the amendments that the Trojan infection has presented to the sufferer’s device.

Win32:TeslaCrypt-CV [Trj] Summary

These adjustments can be as follows:

  • 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.
  • 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 (Hongkong);
  • 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
  • Exhibits possible ransomware file modification behavior;
  • Writes a potential ransom message to disk;
  • 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;
  • Creates a copy of itself;
  • 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 files found on the target’s disk drive — so the sufferer can no longer make use of the data;
  • Preventing normal accessibility to the sufferer’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:TeslaCrypt-CV [Trj]

One of the most regular networks where Win32:TeslaCrypt-CV [Trj] Ransomware are injected are:

  • By methods of phishing emails;
  • As a repercussion of customer winding up on a resource that hosts a malicious software application;

As quickly as the Trojan is effectively injected, it will certainly either cipher the information on the sufferer’s PC or prevent the gadget from working in an appropriate manner – while additionally putting a ransom money note that states the requirement for the sufferers to effect the settlement for the purpose of decrypting the documents or bring back the file system back to the preliminary problem. In a lot of circumstances, the ransom money note will certainly show up when the customer restarts the COMPUTER after the system has already been harmed.

Win32:TeslaCrypt-CV [Trj] distribution channels.

In numerous edges of the world, Win32:TeslaCrypt-CV [Trj] expands by jumps and also bounds. Nonetheless, the ransom notes and also techniques of obtaining the ransom money amount may differ depending upon specific local (regional) setups. The ransom money notes and techniques of obtaining the ransom money quantity might differ depending on certain neighborhood (local) setups.

Ransomware injection

For instance:

    Faulty alerts about unlicensed software application.

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

    Faulty statements concerning illegal content.

    In countries where software program piracy is much less popular, this approach is not as efficient for the cyber scams. Additionally, the Win32:TeslaCrypt-CV [Trj] popup alert may incorrectly claim to be originating from a police organization and also will certainly report having situated kid pornography or various other prohibited information on the device.

    Win32:TeslaCrypt-CV [Trj] popup alert might falsely assert to be obtaining from a legislation enforcement organization and also will certainly report having located child pornography or various other illegal information on the gadget. The alert will likewise include a need for the customer to pay the ransom money.

Technical details

File Info:

crc32: EA3C63FB
md5: 166244c2351bf9c164a887f48b53882a
name: 166244C2351BF9C164A887F48B53882A.mlw
sha1: 263188e9bdeec2b13e3b4a19730eff44fb804c5f
sha256: 200bc25fa093ce65f41baa1c3efe02dcc238b04cb57a6fc5ee87da1e04d6e168
sha512: 00f175762fa9dba2515cff3d61a13222ed7834f38cc7c66f17a1e1ae5421da323360bdae9873f1c615962b7cbf7527cffc0f5ef4c9a0df21c9d4ba64883663ec
ssdeep: 6144:h5YJ5ABaVi8Pvbd+NKZ9mc21JwJBHr2XBnvAb3XAK5dyJXo:hgABaVi8vbdADc28PL4IAgdL
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Howl (C) 2015
InternalName: Pending
FileVersion: 100, 59, 147, 120
CompanyName: Internet Security Systems, Inc.
ProductName: Persia Habitable
FileDescription: Pantaloons
OriginalFilename: Millimetre.exe

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

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
K7AntiVirus Trojan ( 0055e3ef1 )
DrWeb Trojan.Encoder.1973
Cynet Malicious (score: 100)
CAT-QuickHeal Ransom.TeslaCrypt.WR4
Cylance Unsafe
Zillya Trojan.Filecoder.Win32.1005
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/Tescrypt.15451175
K7GW Trojan ( 0055e3ef1 )
Cybereason malicious.2351bf
Cyren W32/Trojan.JVIP-5085
Symantec Ransom.TeslaCrypt
ESET-NOD32 Win32/Filecoder.TeslaCrypt.E
APEX Malicious
Avast Win32:TeslaCrypt-CV [Trj]
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Trojan.Cripack.Gen.1
NANO-Antivirus Trojan.Win32.Encoder.dxbrry
ViRobot Trojan.Win32.S.Ransomlock.361033
MicroWorld-eScan Trojan.Cripack.Gen.1
Tencent Malware.Win32.Gencirc.114c7acf
Ad-Aware Trojan.Cripack.Gen.1
Sophos Mal/Generic-R + Troj/Zbot-KCC
Comodo Malware@#dv8da0winznf
BitDefenderTheta Gen:NN.ZexaF.34628.wq3@aSg9binH
VIPRE Trojan.Win32.Cryptolocker.ec (v)
TrendMicro TROJ_GEN.R06AE01LU15
McAfee-GW-Edition BehavesLike.Win32.PWSZbot.fc
FireEye Generic.mg.166244c2351bf9c1
Emsisoft Trojan.Cripack.Gen.1 (B)
Jiangmin Trojan.Yakes.biq
Webroot W32.Malware.Gen
Avira HEUR/AGEN.1111627
Kingsoft Win32.Troj.Generic_a.a.(kcloud)
Microsoft Ransom:Win32/Tescrypt.C
GData Trojan.Cripack.Gen.1
AhnLab-V3 Trojan/Win32.Ransomlock.C1008572
McAfee Ransom-P
MAX malware (ai score=100)
VBA32 SScope.Malware-Cryptor.Drixed
Panda Trj/Genetic.gen
TrendMicro-HouseCall TROJ_GEN.R06AE01LU15
Rising Ransom.Tescrypt!8.3AF (CLOUD)
Yandex Trojan.GenAsa!Og126IRljyw
SentinelOne Static AI – Malicious PE
Fortinet W32/Yakes.EM!tr
AVG Win32:TeslaCrypt-CV [Trj]
Paloalto generic.ml
Qihoo-360 Win32/Ransom.Tescrypt.HxQBEpsA

How to remove Win32:TeslaCrypt-CV [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-CV [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-CV [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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