Trojan.Agent.ESTF

Written by Robert Bailey

What is Trojan.Agent.ESTF infection?

In this post you will discover regarding the interpretation of Trojan.Agent.ESTF and its adverse impact on your computer system. Such ransomware are a type of malware that is clarified by online frauds to require paying the ransom by a victim.

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In the majority of the instances, Trojan.Agent.ESTF ransomware will certainly instruct its victims to launch funds transfer for the purpose of counteracting the modifications that the Trojan infection has presented to the sufferer’s tool.

Trojan.Agent.ESTF Summary

These adjustments can be as follows:

  • Executable code extraction;
  • Injection (inter-process);
  • Injection (Process Hollowing);
  • Attempts to connect to a dead IP:Port (1 unique times);
  • Presents an Authenticode digital signature;
  • Creates RWX memory;
  • Possible date expiration check, exits too soon after checking local time;
  • Mimics the system’s user agent string for its own requests;
  • A process attempted to delay the analysis task.;
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • A process created a hidden window;
  • Drops a binary and executes it;
  • Performs some HTTP requests;
  • Uses Windows utilities for basic functionality;
  • Executed a process and injected code into it, probably while unpacking;
  • A system process is generating network traffic likely as a result of process injection;
  • Installs itself for autorun at Windows startup;
  • Checks the version of Bios, possibly for anti-virtualization;
  • Checks the CPU name from registry, possibly for anti-virtualization;
  • Creates a copy of itself;
  • Collects information to fingerprint the system;
  • Anomalous binary characteristics;
  • Ciphering the documents situated on the victim’s hard drive — so the sufferer can no more use the data;
  • Preventing normal accessibility to the target’s workstation;

Related domains:

www.ip-adress.com BScope.TrojanRansom.Shade

Trojan.Agent.ESTF

One of the most typical networks whereby Trojan.Agent.ESTF Ransomware are injected are:

  • By methods of phishing emails;
  • As an effect of user winding up on a resource that hosts a destructive software;

As soon as the Trojan is effectively infused, it will either cipher the information on the target’s computer or stop the tool from working in a correct fashion – while also placing a ransom money note that states the demand for the targets to impact the repayment for the purpose of decrypting the records or recovering the file system back to the first problem. In many circumstances, the ransom note will certainly show up when the client restarts the COMPUTER after the system has currently been damaged.

Trojan.Agent.ESTF distribution channels.

In various corners of the globe, Trojan.Agent.ESTF expands by leaps and bounds. Nonetheless, the ransom notes and also methods of extorting the ransom money amount may differ depending upon certain regional (local) settings. The ransom money notes and methods of extorting the ransom money amount may vary depending on specific neighborhood (regional) setups.

Ransomware injection

As an example:

    Faulty alerts regarding unlicensed software program.

    In particular locations, the Trojans commonly wrongfully report having spotted some unlicensed applications enabled on the target’s tool. The alert then requires the customer to pay the ransom money.

    Faulty declarations about prohibited material.

    In countries where software program piracy is less preferred, this approach is not as effective for the cyber fraudulences. Alternatively, the Trojan.Agent.ESTF popup alert might falsely assert to be deriving from a law enforcement establishment as well as will report having located child pornography or various other unlawful information on the gadget.

    Trojan.Agent.ESTF popup alert might wrongly declare to be acquiring from a law enforcement establishment and also will certainly report having situated youngster porn or various other prohibited data on the device. The alert will in a similar way have a requirement for the individual to pay the ransom.

Technical details

File Info:

crc32: 06F83340
md5: 8c7ddf6d414294f7aa7b9c2a6a4d4e59
name: 88888.png
sha1: 7536978266272786e933d1f3c5eea41a5bc78db2
sha256: 34e88835254bce5c5e8db21084b512cc67c17cee3aac5e45147ab4cbc9274a3d
sha512: 505e8c34526c4409b445d6d0ac69515c332de02b6accb0ecf64bf23dc1bf52ee8780074fd147ebdc95096efc99d871b77a595bf1b7777679785df010cbed1350
ssdeep: 12288:/lQq2wwLHqpVxT85LfHbRhco5QFuo+NMYkfgn6ggKa:X2wwTX5Ldhf5QUo+Nbkfg93a
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Trojan.Agent.ESTF also known as:

GridinSoft Trojan.Ransom.Gen
MicroWorld-eScan Gen:Variant.Razy.693413
FireEye Generic.mg.8c7ddf6d414294f7
McAfee W32/PinkSbot-GW!8C7DDF6D4142
Cylance Unsafe
Sangfor Malware
BitDefender Trojan.Agent.ESTF
Cybereason malicious.266272
Invincea heuristic
APEX Malicious
Avast Win32:BankerX-gen [Trj]
GData Trojan.Agent.ESTF
Endgame malicious (high confidence)
Emsisoft Gen:Variant.Razy.693413 (B)
Trapmine malicious.high.ml.score
Sophos Troj/Qbot-FS
MAX malware (ai score=86)
Antiy-AVL GrayWare/Win32.Kryptik.ehls
Arcabit Trojan.Razy.DA94A5
Microsoft Trojan:Win32/Wacatac.C!ml
Acronis suspicious
VBA32 BScope.TrojanRansom.Shade
Ad-Aware Trojan.Agent.ESTF
ESET-NOD32 a variant of Win32/GenKryptik.EMQL
Rising Malware.Heuristic!ET#76% (RDMK:cmRtazrHFeyFbA/9Mrk+azvQ2RkX)
SentinelOne DFI – Malicious PE
eGambit PE.Heur.InvalidSig
Fortinet W32/QBOT.CC!tr
BitDefenderTheta Gen:NN.ZexaF.34128.OIX@aeF1GXmi
AVG Win32:BankerX-gen [Trj]
CrowdStrike win/malicious_confidence_100% (D)
Qihoo-360 HEUR/QVM19.1.FB62.Malware.Gen

How to remove Trojan.Agent.ESTF ransomware?

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 Trojan.Agent.ESTF 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:

Full version of GridinSoft

Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Trojan.Agent.ESTF 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: http://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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