Win32:TeslaCrypt-AB [Trj]

Written by Robert Bailey

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

In this post you will certainly find regarding the interpretation of Win32:TeslaCrypt-AB [Trj] as well as its negative influence on your computer. Such ransomware are a type of malware that is elaborated by online frauds to demand paying the ransom by a sufferer.

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Most of the situations, Win32:TeslaCrypt-AB [Trj] infection will certainly instruct its victims to launch funds transfer for the purpose of counteracting the changes that the Trojan infection has actually presented to the victim’s gadget.

Win32:TeslaCrypt-AB [Trj] Summary

These alterations 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;
  • Unconventionial language used in binary resources: Belarusian;
  • 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;
  • Modifies boot configuration settings;
  • 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;
  • 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 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 found on the sufferer’s hard drive — so the target can no more utilize the data;
  • Preventing normal access to the victim’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-AB [Trj]

The most typical networks whereby Win32:TeslaCrypt-AB [Trj] Trojans are infused are:

  • By ways of phishing e-mails;
  • As a repercussion of individual winding up on a source that organizes a harmful software program;

As quickly as the Trojan is efficiently infused, it will either cipher the information on the victim’s computer or prevent the gadget from functioning in a proper fashion – while also placing a ransom money note that discusses the requirement for the targets to effect the settlement for the function of decrypting the records or restoring the file system back to the preliminary problem. In most circumstances, the ransom note will certainly show up when the client reboots the COMPUTER after the system has currently been harmed.

Win32:TeslaCrypt-AB [Trj] circulation channels.

In numerous edges of the world, Win32:TeslaCrypt-AB [Trj] expands by jumps and also bounds. However, the ransom money notes and tricks of extorting the ransom amount might differ depending on particular local (regional) setups. The ransom notes and also methods of obtaining the ransom money quantity might differ depending on certain regional (local) settings.

Ransomware injection

As an example:

    Faulty informs concerning unlicensed software program.

    In certain areas, the Trojans often wrongfully report having actually discovered some unlicensed applications made it possible for on the sufferer’s tool. The alert after that requires the user to pay the ransom.

    Faulty declarations concerning unlawful material.

    In countries where software program piracy is much less popular, this method is not as efficient for the cyber frauds. Alternatively, the Win32:TeslaCrypt-AB [Trj] popup alert may incorrectly declare to be deriving from a police establishment and also will report having situated youngster porn or various other illegal information on the tool.

    Win32:TeslaCrypt-AB [Trj] popup alert may wrongly claim to be deriving from a regulation enforcement organization and also will certainly report having situated kid porn or other unlawful data on the tool. The alert will in a similar way include a need for the customer to pay the ransom.

Technical details

File Info:

crc32: 01C232D8
md5: 1eb412a5f6400eb490a8698dc08129da
name: 1EB412A5F6400EB490A8698DC08129DA.mlw
sha1: 065daf13ce7d8adfca48fb1405f76b122b5edd62
sha256: a38207f0e70d472afbbde057caa046c47c56d86d02b3c2a633a2e08f02e7274a
sha512: 7155af1756cd1639b9d7baf96caad6f658d28cd64723755dae657adb156fbb9cc107cecc68c376dd2c0bcdc532aef6233c00418e91fa9f35728d4c759daa5c70
ssdeep: 6144:fclgBCoMvJpr3IZVXBRVRC3BMaXGRTuKYAyqeT6y52cZuvrvD1hNVWfO6:f5C9Jpr3I3XBRi3WaXGEKXnW6RjPkv
type: PE32 executable (console) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Warden (C) 2012
InternalName: Tensor
FileDescription: Roadway
OriginalFilename: Unsellable.exe
CompanyName: Actiontec Electronics Inc.

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

GridinSoft Trojan.Ransom.Gen
Bkav W32.Common.0ED3E2BA
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.3158
Cynet Malicious (score: 100)
CAT-QuickHeal Ransom.Crowti.MUE.B5
ALYac Trojan.Agent.BOWV
Cylance Unsafe
Zillya Trojan.Fareit.Win32.12731
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/Yakes.745e31fd
K7GW Trojan ( 0001140e1 )
K7AntiVirus Trojan ( 0001140e1 )
Baidu Win32.Trojan.Filecoder.k
Symantec Ransom.TeslaCrypt
ESET-NOD32 a variant of Win32/Injector.COAB
APEX Malicious
Avast Win32:TeslaCrypt-AB [Trj]
ClamAV Win.Malware.Agent1458146113/CRDF-1
Kaspersky Trojan.Win32.Yakes.nrhi
BitDefender Trojan.Agent.BOWV
NANO-Antivirus Trojan.Win32.Encoder.dzcdhl
ViRobot Trojan.Win32.TeslaCrypt.Gen.A
SUPERAntiSpyware Trojan.Agent/Gen-Dropper
MicroWorld-eScan Trojan.Agent.BOWV
Tencent Malware.Win32.Gencirc.10c4a2c8
Ad-Aware Trojan.Agent.BOWV
Sophos Mal/Generic-R + Mal/Tinba-Y
Comodo Malware@#uw5ljca65bud
BitDefenderTheta Gen:NN.ZexaF.34628.vu0@aCpXNVoc
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_CRYPTESLA.SMJ4
McAfee-GW-Edition Ransomware-FBH!1EB412A5F640
FireEye Generic.mg.1eb412a5f6400eb4
Emsisoft Trojan.Agent.BOWV (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Yakes.dzu
Webroot Trojan.Ransom.Teslacrypt
Avira HEUR/AGEN.1108567
eGambit Unsafe.AI_Score_100%
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft VirTool:Win32/CeeInject.gen!E
Arcabit Trojan.Agent.BOWV
AegisLab Trojan.Win32.Yakes.tn4O
GData Trojan.Agent.BOWV
TACHYON Trojan/W32.Yakes.352256.G
AhnLab-V3 Trojan/Win32.Teslacrypt.R169988
Acronis suspicious
McAfee Ransomware-FBH!1EB412A5F640
MAX malware (ai score=100)
VBA32 Trojan.Yakes
Malwarebytes Malware.Heuristic.1001
Panda Trj/RansomCrypt.E
TrendMicro-HouseCall Ransom_CRYPTESLA.SMJ4
Rising Trojan.Ransom-Tesla!1.A322 (CLOUD)
Ikarus Trojan.Win32.Injector
Fortinet W32/Injector.COBY!tr
AVG Win32:TeslaCrypt-AB [Trj]
Qihoo-360 Win32/Trojan.CeeInject.HxQBEpsA

How to remove Win32:TeslaCrypt-AB [Trj] 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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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-AB [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-AB [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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