PUP.Optional.ThrDownloader

Spectating the PUP.Optional.ThrDownloader malware detection usually means that your system is in big danger. This malware can correctly be named as ransomware – virus which encrypts your files and asks you to pay for their decryption. Stopping it requires some peculiar steps that must be taken as soon as possible.

PUP.Optional.ThrDownloader detection is a virus detection you can spectate in your computer. It generally appears after the provoking procedures on your computer – opening the dubious email, clicking the banner in the Web or setting up the program from dubious sources. From the instance it appears, you have a short time to take action until it begins its malicious action. And be sure – it is far better not to await these destructive things.

What is PUP.Optional.ThrDownloader virus?

PUP.Optional.ThrDownloader is ransomware-type malware. It looks for the documents on your disk drive, ciphers it, and then asks you to pay the ransom for receiving the decryption key. Besides making your documents locked, this virus additionally does a lot of damage to your system. It modifies the networking settings in order to stop you from looking for the removal guides or downloading the antivirus. In rare cases, PUP.Optional.ThrDownloader can even block the setup of anti-malware programs.

PUP.Optional.ThrDownloader Summary

In summary, PUP.Optional.ThrDownloader malware actions in the infected system are next:

  • Creates RWX memory;
  • Dynamic (imported) function loading detected;
  • Authenticode signature is invalid;
  • Encrypting the files kept on the victim’s disk drive — so the victim cannot open these documents;
  • Blocking the launching of .exe files of anti-virus apps
  • Blocking the launching of installation files of anti-virus apps

Ransomware has actually been a major problem for the last 4 years. It is challenging to picture a more harmful virus for both individuals and businesses. The algorithms used in PUP.Optional.ThrDownloader (generally, RHA-1028 or AES-256) are not hackable – with minor exclusions. To hack it with a brute force, you need more time than our galaxy actually exists, and possibly will exist. But that malware does not do all these unpleasant things immediately – it can take up to several hours to cipher all of your files. Therefore, seeing the PUP.Optional.ThrDownloader detection is a clear signal that you need to start the elimination process.

Where did I get the PUP.Optional.ThrDownloader?

Ordinary ways of PUP.Optional.ThrDownloader distribution are usual for all other ransomware variants. Those are one-day landing websites where victims are offered to download and install the free program, so-called bait e-mails and hacktools. Bait emails are a pretty new method in malware spreading – you receive the e-mail that simulates some standard notifications about deliveries or bank service conditions changes. Inside of the email, there is an infected 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 pretty easy, however, still requires a lot of awareness. Malware can hide in various spots, and it is better to stop it even before it goes into your PC than to rely upon an anti-malware program. Simple cybersecurity knowledge is just an important item in the modern world, even if your relationship with a computer stays on YouTube videos. That may keep you a lot of money and time which you would certainly spend while trying to find a fix guide.

PUP.Optional.ThrDownloader malware technical details

File Info:

name: F42D585AA2FCF48A604F.mlwpath: /opt/CAPEv2/storage/binaries/51e55afee37f01c179940fad63c7828d4b87c98810bfe8732ca339f21ef9ab98crc32: 156B3E5Amd5: f42d585aa2fcf48a604f0c94c2b81b4bsha1: 9bc82872069940c95e90a542cab3202e63288755sha256: 51e55afee37f01c179940fad63c7828d4b87c98810bfe8732ca339f21ef9ab98sha512: 98b75a6b45161a0b78eae3d31ff3551724cc8bd563ec3af2cadb2e8c4873c64a360990d4f8b54f51bd62ab11ad1d614645667b135df85358e5cf95081b9ac63bssdeep: 12288:FYAkF7EEVpldmREl+t5N7LF7WD9RWiJ0REINuLqRc5JAHqy/qMcLEi:FYAkN1Qt55F7WJRWirINejTAqMFtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T173C48D62B6E0C43BD0621B745CEFA2B2583DBF142E244D4777E41F8C5F756903A1A2ABsha3_384: 7f98bb68e2cad044211de5e3839a5f04f3ab23865e3ca35dcbf4e3aa8d8a8fe073dc9a4aba92d8eb32ffcf5b455ede01ep_bytes: eb1066623a432b2b484f4f4b90e98c80timestamp: 2015-02-23 03:14:51

Version Info:

0: [No Data]

PUP.Optional.ThrDownloader also known as:

Lionic Trojan.Win32.Foreign.j!c
DrWeb Trojan.Vittalia.150
MicroWorld-eScan Gen:Variant.Adware.Graftor.182541
FireEye Generic.mg.f42d585aa2fcf48a
McAfee PUP-XAE-TO
Cylance Unsafe
Zillya Trojan.Black.Win32.31125
K7AntiVirus Adware ( 004c53de1 )
Alibaba Ransom:Win32/Foreign.82a2b5ae
K7GW Adware ( 004c53de1 )
Cybereason malicious.aa2fcf
VirIT Trojan.Win32.Vittalia.FU
Symantec SMG.Heur!gen
ESET-NOD32 a variant of Win32/Adware.PEerMarket.G
TrendMicro-HouseCall Ransom_Foreign.R002C0OL421
Paloalto generic.ml
ClamAV Win.Trojan.Agent-1277615
Kaspersky HEUR:Trojan-Ransom.Win32.Foreign.gen
BitDefender Gen:Variant.Adware.Graftor.182541
NANO-Antivirus Trojan.Win32.Vittalia.eamujl
Avast FileRepMalware
Tencent Malware.Win32.Gencirc.10b1de4b
Ad-Aware Gen:Variant.Adware.Graftor.182541
Sophos Generic PUA JL (PUA)
TrendMicro Ransom_Foreign.R002C0OL421
McAfee-GW-Edition PUP-XAE-TO
Emsisoft Gen:Variant.Adware.Graftor.182541 (B)
GData Gen:Variant.Adware.Graftor.182541
Jiangmin Trojan/Generic.bhtaj
Avira HEUR/AGEN.1102407
MAX malware (ai score=60)
ViRobot Trojan.Win32.Z.Vittalia.595456
Microsoft Trojan:Win32/Sabsik.FL.B!ml
AhnLab-V3 PUP/Win32.Downware.R158717
VBA32 Trojan.Reconyc
ALYac Gen:Variant.Adware.Graftor.182541
Malwarebytes PUP.Optional.ThrDownloader
APEX Malicious
Rising [email protected] (RDML:Onu99KfkWuI8py59KnzGIw)
Ikarus Trojan-Dropper.Agent
MaxSecure Trojan.Malware.300983.susgen
Fortinet Riskware/PEerMarket
AVG FileRepMalware
Panda Trj/CI.A
CrowdStrike win/malicious_confidence_100% (D)

How to remove PUP.Optional.ThrDownloader?

About the author

Robert Bailey

Security engineer focused on malware behavior, removal workflows, and Windows hardening. Robert reviews threat articles for practical accuracy, checking detection names, symptoms, and cleanup steps before publication.

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