Written by Robert Bailey
Spectating the PUP.Optional.ChinAd malware detection means that your system is in big danger. This computer virus can correctly be identified as ransomware – type of malware 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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PUP.Optional.ChinAd detection is a malware detection you can spectate in your computer. It often shows up after the provoking procedures on your PC – opening the suspicious email messages, clicking the advertisement in the Internet or setting up the program from dubious resources. From the moment it shows up, you have a short time to act until it starts its destructive action. And be sure – it is far better not to wait for these destructive things.

What is PUP.Optional.ChinAd virus?

PUP.Optional.ChinAd is ransomware-type malware. It looks for the documents on your disk drive, encrypts it, and after that asks you to pay the ransom for getting the decryption key. Besides making your files inaccessible, this virus additionally does a ton of harm to your system. It alters the networking setups in order to stop you from checking out the elimination articles or downloading the antivirus. In rare cases, PUP.Optional.ChinAd can even block the setup of anti-malware programs.

PUP.Optional.ChinAd Summary

In total, PUP.Optional.ChinAd ransomware actions in the infected computer are next:

  • SetUnhandledExceptionFilter detected (possible anti-debug);
  • Yara rule detections observed from a process memory dump/dropped files/CAPE;
  • Creates RWX memory;
  • Dynamic (imported) function loading detected;
  • Enumerates running processes;
  • Expresses interest in specific running processes;
  • Unconventionial binary language: Chinese (Simplified);
  • Unconventionial language used in binary resources: Chinese (Simplified);
  • The binary likely contains encrypted or compressed data.;
  • Authenticode signature is invalid;
  • Ciphering the documents kept on the victim’s disk — so the victim cannot check these files;
  • Blocking the launching of .exe files of anti-malware apps
  • Blocking the launching of installation files of anti-malware apps

Ransomware has actually been a horror story for the last 4 years. It is hard to realize a more hazardous virus for both individuals and companies. The algorithms utilized in PUP.Optional.ChinAd (generally, 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 currently exists, and possibly will exist. However, that virus does not do all these unpleasant things without delay – it may require up to several hours to cipher all of your documents. Hence, seeing the PUP.Optional.ChinAd detection is a clear signal that you have to begin the clearing process.

Where did I get the PUP.Optional.ChinAd?

Routine methods of PUP.Optional.ChinAd distribution are standard 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 quite modern method in malware distribution – you get the e-mail that imitates some normal notifications about shippings or bank service conditions updates. Inside of the e-mail, there is a corrupted MS Office file, or a link which opens the exploit landing page.

Malicious email spam

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

Preventing it looks pretty simple, however, still needs a lot of attention. Malware can hide in various spots, and it is far better to stop it even before it goes into your computer than to rely upon an anti-malware program. Simple cybersecurity knowledge is just an important item in the modern-day world, even if your interaction with a computer remains on YouTube videos. That can keep you a great deal of time and money which you would certainly spend while seeking a fixing guide.

PUP.Optional.ChinAd malware technical details

File Info:

name: FC9374B9453076182D2B.mlw
path: /opt/CAPEv2/storage/binaries/c43abbba204f81ccd7f67de16ae2520d914f2f1599813e703f270b15239c57bb
crc32: AB1B5016
md5: fc9374b9453076182d2b4f36479378cb
sha1: 9502853f2748b6fe779d013d6a09cf94df05cb04
sha256: c43abbba204f81ccd7f67de16ae2520d914f2f1599813e703f270b15239c57bb
sha512: 8e2620cbe1916e17259dd3623842c0b6222798ce203520bf0e6e9d00ff0a1c8347694627665033e9ed192ec4e5d731a4d0c32e49129b88c193bcf468c12e6997
ssdeep: 49152:5DN9HKqq/XBxj58iVD+sxm3bmxjbwnux/ztqWaZp0DYJi9v:Z63/XTe6xgbcku5txaP0DEi9v
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T1DCB50123FB9180F1C5052276166A1779BF74FA060E258ED3E3E4DD7D3CB25A0AA3B119
sha3_384: df8cf58c3180bbdf12ed58d551a07634b68aa3ca4c0c23732fdeeb21b0cbe341ea0391bb8221d7ab1308917bfbabab3d
ep_bytes: 558bec6aff6820ed630068741b480064
timestamp: 2011-01-26 15:28:35

Version Info:

FileDescription: 易语言程序
ProductName: 易语言程序
LegalCopyright: 作者版权所有 请尊重并使用正版
Comments: 本程序使用易语言编写(http://www.eyuyan.com)
Translation: 0x0804 0x04b0

PUP.Optional.ChinAd also known as:

Elasticmalicious (high confidence)
K7AntiVirusTrojan ( 005246d51 )
K7GWTrojan ( 005246d51 )
CrowdStrikewin/malicious_confidence_60% (D)
ESET-NOD32a variant of Win32/Packed.FlyStudio.AA potentially unwanted
RisingTrojan.Generic@AI.95 (RDMK:cmRtazpdKQrVr/edmnrtqxoTrG+E)
SophosGeneric ML PUA (PUA)
CynetMalicious (score: 100)
SentinelOneStatic AI – Malicious PE

How to remove PUP.Optional.ChinAd?

PUP.Optional.ChinAd malware is incredibly difficult to delete by hand. It puts its data in several places throughout the disk, and can restore itself from one of the parts. Moreover, a lot of alterations in the windows registry, networking settings and Group Policies are fairly hard to find and revert to the initial. It is far better to make use of a special app – exactly, an anti-malware program. GridinSoft Anti-Malware will definitely fit the best for malware elimination purposes.

Why GridinSoft Anti-Malware? It is very light-weight and has its databases updated nearly every hour. In addition, it does not have such bugs and exploits as Microsoft Defender does. The combination of these details makes GridinSoft Anti-Malware ideal for removing malware of any type.

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

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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