Trojan.Win32.Cossta.akrd

Written by Robert Bailey

What is Trojan.Win32.Cossta.akrd infection?

In this short article you will certainly discover concerning the definition of Trojan.Win32.Cossta.akrd and also its unfavorable impact on your computer system. Such ransomware are a kind of malware that is specified by on the internet fraudulences to demand paying the ransom by a target.

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Most of the situations, Trojan.Win32.Cossta.akrd virus will advise its victims to start funds transfer for the function of reducing the effects of the modifications that the Trojan infection has actually presented to the target’s device.

Trojan.Win32.Cossta.akrd Summary

These alterations can be as adheres to:

  • 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.
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • 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.
  • Uses Windows utilities for basic functionality;
  • 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
  • Ciphering the files located on the sufferer’s hard disk drive — so the victim can no longer utilize the data;
  • Preventing routine 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.

Trojan.Win32.Cossta.akrd

The most typical channels through which Trojan.Win32.Cossta.akrd are injected are:

  • By ways of phishing emails;
  • As an effect of user ending up on a resource that holds a destructive software program;

As soon as the Trojan is successfully infused, it will either cipher the information on the sufferer’s computer or stop the gadget from functioning in a correct fashion – while additionally placing a ransom note that discusses the demand for the sufferers to effect the settlement for the objective of decrypting the documents or restoring the file system back to the preliminary problem. In the majority of circumstances, the ransom note will show up when the customer reboots the PC after the system has already been damaged.

Trojan.Win32.Cossta.akrd circulation channels.

In numerous corners of the globe, Trojan.Win32.Cossta.akrd grows by jumps as well as bounds. However, the ransom notes and also techniques of extorting the ransom money quantity might differ depending on particular neighborhood (regional) setups. The ransom notes as well as tricks of obtaining the ransom amount might differ depending on particular local (regional) setups.

Ransomware injection

For instance:

    Faulty signals about unlicensed software program.

    In specific areas, the Trojans often wrongfully report having actually spotted some unlicensed applications made it possible for on the target’s gadget. The alert after that demands the customer to pay the ransom money.

    Faulty declarations about unlawful web content.

    In nations where software application piracy is much less prominent, this technique is not as reliable for the cyber fraudulences. Alternatively, the Trojan.Win32.Cossta.akrd popup alert might falsely declare to be stemming from a police establishment and will certainly report having located youngster pornography or various other prohibited information on the gadget.

    Trojan.Win32.Cossta.akrd popup alert might incorrectly claim to be obtaining from a legislation enforcement institution and will certainly report having located kid pornography or various other unlawful information on the tool. The alert will likewise contain a demand for the customer to pay the ransom.

Technical details

File Info:

crc32: B7FE69C1
md5: 093098780411df73a645ca9dfa4bd85e
name: 093098780411DF73A645CA9DFA4BD85E.mlw
sha1: 889db22a9d8a9f7e14407a0da15eafc6c8863106
sha256: 8b63de030a72a78b6d05786192bbf02a8db7e95710e3d1c460f99be1d4e2d845
sha512: c0179c6cdbe88c44a5808703ec0b51fb4d28a5beedc6d98931a374a4fdfdcab0fb6622e4ef9e8d9b59e8a5a500168e1a7ba74c17ce536b4e15c52008be306a3c
ssdeep: 12288:Uutrzh9xOXk3rTwQYIyNxKIPO2vJXaRzFyCB4y6w2JnaWYIos0iOSvkaMLH:Uutr5OU3rljyNYuOGazcCeyN2EWYIZpc
type: PE32 executable (GUI) Intel 80386, for MS Windows, RAR self-extracting archive

Version Info:

0: [No Data]

Trojan.Win32.Cossta.akrd also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus Password-Stealer ( 0039029f1 )
Elastic malicious (high confidence)
DrWeb Trojan.Siggen6.46709
Cynet Malicious (score: 99)
Cylance Unsafe
Sangfor Trojan.Win32.Cossta.akrd
Alibaba TrojanPSW:Win32/Cossta.9d257c62
K7GW Password-Stealer ( 0039029f1 )
Cybereason malicious.a9d8a9
Symantec Trojan.Gen.2
ESET-NOD32 multiple detections
APEX Malicious
Avast Win32:Trojan-gen
ClamAV Win.Dropper.Tibia-7344427-0
Kaspersky Trojan.Win32.Cossta.akrd
NANO-Antivirus Trojan.Win32.Tibia.bjmwqh
Tencent Win32.Trojan.Cossta.Eoe
VIPRE Trojan.Win32.Generic.pak!cobra
McAfee-GW-Edition BehavesLike.Win32.Dropper.jc
Avira TR/Dropper.Gen2
Kingsoft Win32.Troj.FrauDrop.(kcloud)
Microsoft Trojan:Win32/Wacatac.B!ml
AegisLab Trojan.Win32.Generic.luIP
AhnLab-V3 Malware/Win32.Generic.C2768602
McAfee Artemis!093098780411
Malwarebytes Malware.AI.3910413532
AVG Win32:Trojan-gen
Qihoo-360 Win32/Ransom.FRS.HwYDEpsA

How to remove Trojan.Win32.Cossta.akrd 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 Trojan.Win32.Cossta.akrd 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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Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Trojan.Win32.Cossta.akrd 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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