Virus and Spyware Removal Guides, uninstall instructions

What is Quantum Ad Blocker?

Quantum Ad Blocker is a rogue browser extension, which is endorsed as an adblocker - a tool that blocks ads on visited websites. However, this piece of software operates by delivering intrusive advertisements instead. Due to this, Quantum Ad Blocker is classified as adware and a PUA (Potentially Unwanted Application).

What is O4kjj ransomware?

O4kjj prevents victims from accessing files by encrypting them. It also renames files by appending a string of random characters and the ".o4kjj" to their filenames and creates a ransom note (the "p3qn_HOW_TO_DECRYPT.txt" file).

What is "ING Bank email scam"?

"ING Bank email scam" refers to a spam campaign. The letters sent through this campaign are in Dutch and supposedly relate to parking fees. It must be emphasized that all of the information provided by these emails is false, and the legitimate entities mentioned - are not associated with the scam letters.

What is PixStealer malware?

PixStealer is the name of a banking Trojan, a malicious Android application targeting the Pix payment system and Brazilian bank applications. It abuses Android’s Accessibility Service. Research shows that cybercriminals used Google Play to distribute PixStealer by disguising it as PagBank application offering cashback service.

What is Temlown ransomware?

Belonging to the VoidCrypt ransomware family, Temlown is a malicious program that encrypts data and demands payment for the decryption.

Compromised files are renamed according to this pattern: original filename, cyber criminals' email address, unique ID assigned to the victim, and a ".temlown" extension. For example, a file like "1.jpg" would appear as something similar to "1.jpg.[noitanimodd@gmail.com][MJ-OF5623980147].temlown". Once this process is complete, a ransom note - "Read-this.txt" - is created.

What is Vck99 ransomware?

Vck99 encrypts files and modifies their filenames. It appends a string of random characters and the ".vck99" extension to filenames. For instance, Vck99 renames "1.jpg" to "1.jpg.ew_JA8UNQlPUbtDMKRXrsp-0_b5RUz7siu1DrqJ3jGD_PkWXE_-DtPM0.vck99", "2.jpg" to "2.jpg.ew_JA8UNQlPUbtDMKRXrsp-0_b5RUz7siu1DrqJ3jGD_PkWXE_-DtPM0.vck99".

Also, Vck99 creates the "phLK_HOW_TO_DECRYPT.txt" text file, a ransom note containing contact information and other details.

What is DataExplorer?

DataExplorer is a piece of rogue software categorized as adware. It also has browser hijacker traits. Furthermore, due to the questionable methods used to proliferate apps of this type, they are also considered to be PUAs (Potentially Unwanted Applications).

What is Lambda ransomware?

Lambda is a malicious program that is part of the VoidCrypt ransomware group. It operates by encrypting data (rendering files unusable) and demanding payment for the decryption.

Affected files are renamed according to this pattern: initial filename, cyber criminals' email address, unique ID assigned to the victims, and a ".lambda" extension. For example, a file like "1.jpg" would appear as something similar to "1.jpg.[whirmx@gmail.com][MJ-QH5349682710].lambda". Afterwards, a ransom note - "Read-this.txt" - is dropped onto the desktop.

What is QuickTogo browser hijacker?

QuickTogo is a potentially unwanted application (PUA) designed to hijack browsers by changing their settings. Its purpose is to promote togosearching.com, a fake search engine. Lots of browser hijackers are promoted and distributed using questionable methods. Thus, users often install them unintentionally.

What is MEMZ ransomware?

MEMZ ransomware encrypts files, appends the ".MEMZ" extension to filenames, and creates a ransom note (the "HOW TO DECRYPT FILES.txt" file). For example, it renames "1.jpg" to "1.jpg.MEMZ", "2.jpg" to "2.jpg.MEMZ". MEMZ's ransom note contains contact and payment information.