What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Spectating the Ransom:Win32/Ciluf malware detection usually means that your PC is in big danger. This computer virus can correctly be named as ransomware – virus which ciphers your files and asks you to pay for their decryption. Deleteing it requires some peculiar steps that must be taken as soon as possible.
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Ransom:Win32/Ciluf detection is a malware detection you can spectate in your computer. It often appears after the provoking activities on your computer – opening the dubious e-mail messages, clicking the banner in the Web or setting up the program from unreliable resources. From the instance it appears, you have a short time to take action until it starts its destructive activity. And be sure – it is far better not to wait for these malicious effects.

What is Ransom:Win32/Ciluf virus?

Ransom:Win32/Ciluf is ransomware-type malware. It looks for the files on your disk drives, ciphers it, and then asks you to pay the ransom for receiving the decryption key. Besides making your files locked, this malware additionally does a ton of damage to your system. It changes the networking setups in order to stop you from looking for the removal guides or downloading the anti-malware program. In rare cases, Ransom:Win32/Ciluf can additionally prevent the setup of anti-malware programs.

Ransom:Win32/Ciluf Summary

In total, Ransom:Win32/Ciluf malware activities in the infected system are next:

  • SetUnhandledExceptionFilter detected (possible anti-debug);
  • Sample contains Overlay data;
  • Yara rule detections observed from a process memory dump/dropped files/CAPE;
  • Creates RWX memory;
  • Dynamic (imported) function loading detected;
  • Reads data out of its own binary image;
  • The binary contains an unknown PE section name indicative of packing;
  • Creates an autorun.inf file;
  • Authenticode signature is invalid;
  • Created a process from a suspicious location;
  • CAPE detected the PyInstaller malware family;
  • Checks for the presence of known devices from debuggers and forensic tools;
  • Checks for the presence of known devices from debuggers and forensic tools;
  • Detects the presence of Windows Defender AV emulator via files;
  • Harvests cookies for information gathering;
  • Attempts to interact with an Alternate Data Stream (ADS);
  • Encrypting the documents kept on the victim’s drives — so the victim cannot open these documents;
  • Blocking the launching of .exe files of anti-virus programs
  • Blocking the launching of installation files of anti-malware apps

Ransomware has been a horror story for the last 4 years. It is difficult to picture a more damaging malware for both individuals and corporations. The algorithms utilized in Ransom:Win32/Ciluf (generally, RHA-1028 or AES-256) are not hackable – with minor exclusions. To hack it with a brute force, you need to have more time than our galaxy already exists, and possibly will exist. However, that malware does not do all these bad things instantly – it can require up to a few hours to cipher all of your files. Hence, seeing the Ransom:Win32/Ciluf detection is a clear signal that you need to begin the removal procedure.

Where did I get the Ransom:Win32/Ciluf?

Usual tactics of Ransom:Win32/Ciluf distribution are usual for all other ransomware examples. Those are one-day landing websites where users are offered to download the free app, so-called bait emails and hacktools. Bait e-mails are a pretty new method in malware spreading – you receive the e-mail that simulates some routine notifications about deliveries or bank service conditions changes. Inside of the e-mail, there is a malicious MS Office file, or a web link which leads to the exploit landing site.

Malicious email spam

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

Avoiding it looks fairly easy, but still demands tons of awareness. Malware can hide in different spots, and it is far better to prevent it even before it gets into your PC than to trust in an anti-malware program. Essential cybersecurity knowledge is just an essential item in the modern-day world, even if your interaction with a PC remains on YouTube videos. That can keep you a great deal of money and time which you would spend while searching for a fixing guide.

Ransom:Win32/Ciluf malware technical details

File Info:

name: 7C10CF39EE3169BB3E46.mlw
path: /opt/CAPEv2/storage/binaries/007c1f11afb195d77c176891d54b9cfd37c87b13dfe0ab5b6c368125e4459b8c
crc32: 643A0101
md5: 7c10cf39ee3169bb3e46aac14c888228
sha1: e3902bc1f576ad063db6da455a820a840c1556a4
sha256: 007c1f11afb195d77c176891d54b9cfd37c87b13dfe0ab5b6c368125e4459b8c
sha512: c57809d6ea2ad764a7479939780d3af00d3bff9ff155b8d0e563b780be794124831e0cc6eacd31c0ebee8d26358c48aeeed59e94ca6f419defa9e5c30f67644e
ssdeep: 98304:2KbdBAEoDCqpmeSInsYSo5QAXZx7SnqS5pX6qXNhsubdf5gEbvU0C5WsYjRBJ:LvxCzWIsYSSQ+xNEpT5f5JvoWsoRB
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T1C466330BF6F24833E8721737B8F2E176BD2FF424072A95C78B45286946593D53AB9309
sha3_384: 347c8b17381687c9b7672513ebfee542327e711085f866281e148d1c77c4b2e5c24dcc5ead529ef90fbee08d7aab9fb4
ep_bytes: e836050000e98efeffffcccccc575653
timestamp: 2017-07-31 15:20:53

Version Info:

0: [No Data]

Ransom:Win32/Ciluf also known as:

Elasticmalicious (moderate confidence)
K7AntiVirusTrojan ( 0051f3991 )
K7GWTrojan ( 0051f3991 )
AvastFileRepMalware [Trj]
EmsisoftTrojan.GenericKD.6266432 (B)
SophosMal/Generic-R + Troj/Ransom-ETL
CynetMalicious (score: 99)
MAXmalware (ai score=100)
AVGFileRepMalware [Trj]
CrowdStrikewin/malicious_confidence_100% (W)

How to remove Ransom:Win32/Ciluf?

Ransom:Win32/Ciluf malware is very difficult to remove manually. It puts its data in numerous locations throughout the disk, and can recover itself from one of the parts. In addition, a lot of alterations in the registry, networking setups and also Group Policies are pretty hard to identify and revert to the initial. It is far better to use a specific tool – exactly, an anti-malware program. GridinSoft Anti-Malware will definitely fit the most ideal for malware removal purposes.

Why GridinSoft Anti-Malware? It is pretty lightweight and has its databases updated almost every hour. In addition, it does not have such problems and exposures as Microsoft Defender does. The combination of these aspects makes GridinSoft Anti-Malware suitable for removing malware of any form.

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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