Ransom:Win32/Teerac.C

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

What is Ransom:Win32/Teerac.C infection?

In this post you will find about the interpretation of Ransom:Win32/Teerac.C as well as its unfavorable impact on your computer system. Such ransomware are a form of malware that is clarified by online scams to demand paying the ransom by a victim.

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Most of the situations, Ransom:Win32/Teerac.C infection will advise its victims to start funds transfer for the objective of reducing the effects of the amendments that the Trojan infection has introduced to the target’s gadget.

Ransom:Win32/Teerac.C 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;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Executed a process and injected code into it, probably while unpacking;
  • Attempts to delete volume shadow copies;
  • A system process is generating network traffic likely as a result of process injection;
  • 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
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Creates a copy of itself;
  • Harvests information related to installed mail clients;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the documents situated on the target’s hard drive — so the sufferer can no more make use of the information;
  • Preventing routine 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.

Ransom:Win32/Teerac.C

The most common networks where Ransom:Win32/Teerac.C are infused are:

  • By methods of phishing emails;
  • As an effect of user winding up on a source that holds a destructive software application;

As soon as the Trojan is effectively injected, it will either cipher the information on the victim’s PC or avoid the device from operating in a correct fashion – while additionally putting a ransom note that mentions the demand for the targets to impact the repayment for the objective of decrypting the papers or bring back the documents system back to the preliminary problem. In a lot of circumstances, the ransom note will certainly come up when the customer restarts the PC after the system has actually already been harmed.

Ransom:Win32/Teerac.C distribution networks.

In various corners of the world, Ransom:Win32/Teerac.C grows by jumps as well as bounds. Nonetheless, the ransom money notes and techniques of extorting the ransom quantity might vary depending upon particular regional (local) setups. The ransom money notes as well as techniques of obtaining the ransom money quantity may vary depending on specific neighborhood (regional) setups.

Ransomware injection

For instance:

    Faulty alerts concerning unlicensed software application.

    In specific locations, the Trojans typically wrongfully report having spotted some unlicensed applications allowed on the victim’s device. The alert after that requires the user to pay the ransom.

    Faulty statements concerning illegal material.

    In nations where software application piracy is much less prominent, this method is not as effective for the cyber frauds. Conversely, the Ransom:Win32/Teerac.C popup alert may falsely declare to be deriving from a law enforcement organization and also will certainly report having located youngster porn or various other illegal information on the device.

    Ransom:Win32/Teerac.C popup alert may wrongly declare to be obtaining from a legislation enforcement establishment and also will report having situated child porn or other prohibited information on the gadget. The alert will similarly have a demand for the individual to pay the ransom.

Technical details

File Info:

crc32: ED102B5F
md5: 97b0a298b70cbb33056e43cd3360a096
name: 97B0A298B70CBB33056E43CD3360A096.mlw
sha1: a6ccdae016b8330c0ff44a694b44108f37eea595
sha256: 78167371bd593b20a32902f0e3182d892b047521a1185904305671b6bafd51ab
sha512: 89c7e317b11579e636aa07b3e50d110ec23f0d5e10fedf90543f1d9ca291871ea7337c7adfeef49377eaaa7ec607f05103ee339495a39a49533fbee2014f4f1a
ssdeep: 6144:l24g1A0OvpVXJ8Q0T2c/H+csQMxnw9OoteG7qIEjp/4UQ1Ms:84g1A0OvDJI2c3sQNIotjup91
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Ransom:Win32/Teerac.C also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
K7AntiVirusTrojan ( 0055e3ef1 )
Elasticmalicious (high confidence)
DrWebTrojan.Encoder.761
CynetMalicious (score: 100)
CAT-QuickHealTrojan.Generic.B4
ALYacTrojan.Foreign.Gen.2
CylanceUnsafe
ZillyaTrojan.Foreign.Win32.47584
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_90% (W)
AlibabaTrojanDropper:Win32/dropper.ali1003001
K7GWTrojan ( 0055e3ef1 )
Cybereasonmalicious.8b70cb
SymantecRansom.Enciphered
ESET-NOD32Win32/Filecoder.TorrentLocker.A
APEXMalicious
AvastWin32:Crypt-SAA [Trj]
KasperskyHEUR:Trojan.Win32.Generic
BitDefenderTrojan.Foreign.Gen.2
NANO-AntivirusTrojan.Win32.RiskGen.dknfzr
MicroWorld-eScanTrojan.Foreign.Gen.2
TencentMalware.Win32.Gencirc.114cb15a
Ad-AwareTrojan.Foreign.Gen.2
SophosML/PE-A + Mal/Zbot-SY
ComodoTrojWare.Win32.Spy.Zbot.KKL@5t7ish
BitDefenderThetaGen:NN.ZexaF.34628.tuW@am4!7Hmi
VIPRETrojan.Win32.CryptoWall.gen
TrendMicroTROJ_CRYPLOCK.JSPW
McAfee-GW-EditionBehavesLike.Win32.Generic.fc
FireEyeGeneric.mg.97b0a298b70cbb33
EmsisoftTrojan.Foreign.Gen.2 (B)
SentinelOneStatic AI – Malicious PE
JiangminTrojan/Generic.bdroe
WebrootW32.Trojan.GenKD
AviraTR/Crypt.ZPACK.Gen4
eGambitGeneric.Malware
KingsoftWin32.Troj.Undef.(kcloud)
MicrosoftRansom:Win32/Teerac.C
ArcabitTrojan.Foreign.Gen.2
GDataTrojan.Foreign.Gen.2
AhnLab-V3Trojan/Win32.Ransom.R127112
Acronissuspicious
McAfeeGeneric-FAVU!97B0A298B70C
MAXmalware (ai score=100)
VBA32Hoax.Foreign
PandaTrj/Genetic.gen
TrendMicro-HouseCallTROJ_CRYPLOCK.JSPW
RisingRansom.FileCryptor!8.1A7 (CLOUD)
YandexTrojan.Foreign!saLeWnByBu8
IkarusTrojan-Downloader.Win32.Nymaim
FortinetW32/Generik.EDMHUIF!tr
AVGWin32:Crypt-SAA [Trj]
Qihoo-360Win32/Ransom.TorrentLocker.HwoCEpsA

How to remove Ransom:Win32/Teerac.C 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 Ransom:Win32/Teerac.C 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 Ransom:Win32/Teerac.C 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/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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