Trojan-Ransom.Win32.Blocker.gkht

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Seeing the Trojan-Ransom.Win32.Blocker.gkht detection means that your PC is in big danger. This virus can correctly be named as ransomware – virus which ciphers your files and asks you to pay for their decryption. Stopping it requires some unusual steps that must be taken as soon as possible.
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Trojan-Ransom.Win32.Blocker.gkht detection is a malware detection you can spectate in your system. It often appears after the provoking activities on your computer – opening the suspicious email messages, clicking the banner in the Web or setting up the program from dubious resources. From the instance it shows up, you have a short time to act until it begins its malicious activity. And be sure – it is better not to await these harmful things.

What is Trojan-Ransom.Win32.Blocker.gkht virus?

Trojan-Ransom.Win32.Blocker.gkht is ransomware-type malware. It searches for the documents on your disks, ciphers it, and after that asks you to pay the ransom for receiving the decryption key. Besides making your files locked, this virus also does a lot of harm to your system. It changes the networking setups in order to stop you from looking for the elimination manuals or downloading the anti-malware program. In rare cases, Trojan-Ransom.Win32.Blocker.gkht can also stop the launching of anti-malware programs.

Trojan-Ransom.Win32.Blocker.gkht Summary

Summarizingly, Trojan-Ransom.Win32.Blocker.gkht ransomware activities in the infected computer are next:

  • Behavioural detection: Executable code extraction – unpacking;
  • SetUnhandledExceptionFilter detected (possible anti-debug);
  • Yara rule detections observed from a process memory dump/dropped files/CAPE;
  • Creates RWX memory;
  • Mimics the system’s user agent string for its own requests;
  • Dynamic (imported) function loading detected;
  • Performs HTTP requests potentially not found in PCAP.;
  • HTTPS urls from behavior.;
  • CAPE extracted potentially suspicious content;
  • The binary likely contains encrypted or compressed data.;
  • Authenticode signature is invalid;
  • Uses Windows utilities for basic functionality;
  • Deletes its original binary from disk;
  • Attempts to delete or modify volume shadow copies;
  • Behavioural detection: Injection (inter-process);
  • Behavioural detection: Injection with CreateRemoteThread in a remote process;
  • Attempts to stop active services;
  • Modifies boot configuration settings;
  • Behavior consistent with a dropper attempting to download the next stage.;
  • Collects and encrypts information about the computer likely to send to C2 server;
  • Installs itself for autorun at Windows startup;
  • Attempts to modify proxy settings;
  • Creates a copy of itself;
  • Attempts to disable System Restore;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the documents kept on the victim’s disk drives — so the victim cannot check these files;
  • Blocking the launching of .exe files of anti-virus apps
  • Blocking the launching of installation files of anti-malware apps

Ransomware has been a major problem for the last 4 years. It is hard to realize a more harmful malware for both individual users and companies. The algorithms utilized in Trojan-Ransom.Win32.Blocker.gkht (typically, RHA-1028 or AES-256) are not hackable – with minor exclusions. To hack it with a brute force, you need to have a lot more time than our galaxy already exists, and possibly will exist. But that virus does not do all these horrible things immediately – it can take up to a few hours to cipher all of your documents. Therefore, seeing the Trojan-Ransom.Win32.Blocker.gkht detection is a clear signal that you have to begin the clearing procedure.

Where did I get the Trojan-Ransom.Win32.Blocker.gkht?

Routine tactics of Trojan-Ransom.Win32.Blocker.gkht distribution are common for all other ransomware examples. Those are one-day landing sites where users are offered to download and install the free software, so-called bait e-mails and hacktools. Bait e-mails are a pretty modern tactic in malware spreading – you get the e-mail that mimics some standard notifications about shippings or bank service conditions changes. Within the e-mail, there is a malicious MS Office file, or a web link which leads to the exploit landing page.

Malicious email spam

Malicious email message. This one tricks you to open the phishing website.

Avoiding it looks pretty easy, but still demands tons of recognition. Malware can hide in different places, and it is far better to prevent it even before it invades your computer than to rely upon an anti-malware program. Simple cybersecurity awareness is just an essential thing in the modern world, even if your relationship with a computer stays on YouTube videos. That may keep you a great deal of money and time which you would spend while trying to find a solution.

Trojan-Ransom.Win32.Blocker.gkht malware technical details

File Info:

name: 9EF90F617A781CD6C0D0.mlw
path: /opt/CAPEv2/storage/binaries/e855d451a62df108cd81c8bc350d24c60cad32981db4d8df08937804be5ddde0
crc32: C544B414
md5: 9ef90f617a781cd6c0d0d3c4cbb449d7
sha1: 985d26bc7255e0c13780c507783498570ceb5868
sha256: e855d451a62df108cd81c8bc350d24c60cad32981db4d8df08937804be5ddde0
sha512: 5ddc459633042ab86e0ef66d5d479a64962c6c9efefc37e0229f2c37ae653a81d83f6d80a0f36b4bf0bccbdca69e90d963397469d84f8e5ef54c9796e6221c88
ssdeep: 6144:ByCLJBUUYhMVB0KV9FRXODf5nKzn+eL1om9T7:rb6ev1zXgf5nKbBLr7
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T1D9649E6AAC624C66E8AB463C99C61BCE06356B310F21AD37148577485EA23C7F537F0F
sha3_384: 74dbee6b067d5e85f054e16f0d46cc818d7fbe9d4373db46163fdd70fc96bfd7d0897eabb257158e5f7889dded36b1d5
ep_bytes: 558bec81ec3c0c0000535657c78558ff
timestamp: 2015-01-22 13:32:14

Version Info:

CompanyName: Commander Group
FileDescription: nLe7L6v50
FileVersion: 5.9.0.0
InternalName: r7m45R13pT1.exe
LegalCopyright: d880bRjDkB3 1980-2002
OriginalFilename: r7m45R13pT1.exe
ProductVersion: 5.9.0.0
ProductName: E368H3126
Translation: ЉӦ

Trojan-Ransom.Win32.Blocker.gkht also known as:

Bkav W32.AIDetect.malware2
Lionic Trojan.Win32.Blocker.j!c
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.514
MicroWorld-eScan Trojan.GenericKD.2104434
FireEye Generic.mg.9ef90f617a781cd6
CAT-QuickHeal Ransom.Crowti.MUE.A4
McAfee Generic.vj
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
K7AntiVirus Trojan ( 00498ab51 )
Alibaba Ransom:Win32/Blocker.954e2e53
K7GW Trojan ( 00498ab51 )
CrowdStrike win/malicious_confidence_100% (W)
BitDefenderTheta Gen:NN.ZexaF.34712.tq0@aC59r0cO
VirIT Trojan.Win32.Inject2.BMDE
Cyren W32/Trojan.QPYB-6013
tehtris Generic.Malware
ESET-NOD32 Win32/Filecoder.CryptoWall.A
TrendMicro-HouseCall TROJ_RANSOM.YMKM
Paloalto generic.ml
Kaspersky Trojan-Ransom.Win32.Blocker.gkht
BitDefender Trojan.GenericKD.2104434
NANO-Antivirus Trojan.Win32.DangerousObject.efgstv
ViRobot Dropper.Agent.311296.E
Avast Win32:Trojan-gen
Tencent Win32.Trojan.Blocker.Hznl
Ad-Aware Trojan.GenericKD.2104434
Emsisoft Trojan.GenericKD.2104434 (B)
Comodo Malware@#z68jwodg02h7
Zillya Trojan.Blocker.Win32.25671
TrendMicro TROJ_RANSOM.YMKM
McAfee-GW-Edition Generic.vj
SentinelOne Static AI – Malicious PE
Trapmine malicious.high.ml.score
Sophos ML/PE-A + Troj/Ransom-APZ
Ikarus Trojan-Ransom.CryptoWall3
GData Win32.Trojan.Agent.PO98QA
Jiangmin Trojan/Blocker.kkr
Webroot W32.Malware.Gen
Avira TR/Crypt.ZPACK.htrex.21
Kingsoft Win32.Troj.Undef.(kcloud)
Arcabit Trojan.Generic.D201C72
Microsoft Ransom:Win32/Crowti.A
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.Blocker.C693193
VBA32 Hoax.Blocker
ALYac Trojan.GenericKD.2104434
TACHYON Trojan/W32.Blocker.311296.F
APEX Malicious
Rising Trojan.Win32.Filecoder.ag (CLASSIC)
Yandex Trojan.Blocker!DTyC/TmDgow
MAX malware (ai score=100)
Fortinet W32/Filecoder.CO!tr
AVG Win32:Trojan-gen
Cybereason malicious.17a781
Panda Trj/WLT.B

How to remove Trojan-Ransom.Win32.Blocker.gkht?

Trojan-Ransom.Win32.Blocker.gkht malware is very difficult to delete manually. It puts its documents in several places throughout the disk, and can recover itself from one of the parts. Furthermore, various alterations in the windows registry, networking settings and also Group Policies are pretty hard to discover and change to the original. It is far better to utilize a special tool – exactly, an anti-malware tool. GridinSoft Anti-Malware will definitely fit the best for malware elimination reasons.

Why GridinSoft Anti-Malware? It is really light-weight and has its detection databases updated practically every hour. In addition, it does not have such bugs and exposures as Microsoft Defender does. The combination of these aspects makes GridinSoft Anti-Malware perfect for getting rid of malware of any kind.

Remove the viruses with GridinSoft Anti-Malware

  • Download and install GridinSoft Anti-Malware. After the installation, you will be offered to perform the Standard Scan. Approve this action.
  • Gridinsoft Anti-Malware during the scan process

  • Standard scan checks the logical disk where the system files are stored, together with the files of programs you have already installed. The scan lasts up to 6 minutes.
  • GridinSoft Anti-Malware scan results

  • When the scan is over, you may choose the action for each detected virus. For all files of [SHORT_NAME] the default option is “Delete”. Press “Apply” to finish the malware removal.
  • GridinSoft Anti-Malware - After Cleaning
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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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