Hermes Ransomware wide-spread family of crypto-viruses. There have been 2 major updates of initial ransomware – Hermes 2.0 Ransomware and Hermes 2.1 Ransomware. All variants use AES-256 encryption algorithm combined with RSA-2048. First version did not add any extensions and modified only content of the files by adding HERMES file-marker. Last version started to append .hrm suffix, but then just encrypted files without filename modification. After encryption, ransomware creates text files DECRYPT_INFO.txt and DECRYPT_INFORMATION.html, that contains message with instructions to pay the ransom and contact details. You can see the contents of this files below in the next paragraph.
Prime Updater or PrimUp! or PrimeUpd is misleading application, that pretends to be software updater, but in fact delivers ads and pop-ups in Google Chrome, Mozilla Firefox and Internet Explorer. It has basic functionality to detect and download browser and flash updates (although browser offer own updates themselves and Adobe has official updater). However, such trivial functional is given by a great price. Prime Updater gets access to browser settings, can download and install not only updates but also advertising browser extensions and runs on startup.
Chumsearch.com is unwanted search engine for Safari, Google Chrome and Mozilla Firefox browsers running on Mac. It is installed by browser hijacker along with freeware. This webpage is associated with famous Safe Finder malware and search queries, that user types on Chumsearch.com are redirected to search.safefinder.com and then to search.yahoo.com. This website overrides search and homepage settings in browsers, and hijacker module does not allow user to revert this settings.
Web Companion is legal security application from Lavasoft. It was developed to promote Lavasoft products and services by installing browser add-ons such as Ad-aware Security Search, Ad-aware Ad Block, Ad-aware Web Protection and Ad-ware Smart Shopper in Google Chrome, Mozilla Firefox and Internet Explorer. Although, Lavasoft is considered reputable vendor and applications may be useful there are some side effects and undesirable consequences for inexperienced users. This extensions modify browser search and homepage to either Bing.com, Yahoo.com or Yandex.ru, depending on your location. Those are not most wide-spread search engines and novice users complain of unexpected browser modifications. Ad-aware Smart Shopper can display ads, pop-ups and discount coupons on shopping sites.
PremierOpinion by VoiceFive Networks is potentially unwanted program, that can infect Windows and MacOS systems. It can be classified as spyware and adware. Some users report ads and pop-ups by PremierOpinion, some indicate survey pop-ups in the bottom-right corner of the desktop. Research of recent versions of PremierOpinion shows, that this application collects private information about users computers without any permission and transmits this data to its servers. This data includes web surfing habits, program usage statistics, computer configuration, e-mails, adresses. There are obviously many unpleasant ways to use this information.