Pytehole Ransomware
Posted: April 27, 2017
Threat Metric
The following fields listed on the Threat Meter containing a specific value, are explained in detail below:
Threat Level: The threat level scale goes from 1 to 10 where 10 is the highest level of severity and 1 is the lowest level of severity. Each specific level is relative to the threat's consistent assessed behaviors collected from SpyHunter's risk assessment model.
Detection Count: The collective number of confirmed and suspected cases of a particular malware threat. The detection count is calculated from infected PCs retrieved from diagnostic and scan log reports generated by SpyHunter.
Volume Count: Similar to the detection count, the Volume Count is specifically based on the number of confirmed and suspected threats infecting systems on a daily basis. High volume counts usually represent a popular threat but may or may not have infected a large number of systems. High detection count threats could lay dormant and have a low volume count. Criteria for Volume Count is relative to a daily detection count.
Trend Path: The Trend Path, utilizing an up arrow, down arrow or equal symbol, represents the level of recent movement of a particular threat. Up arrows represent an increase, down arrows represent a decline and the equal symbol represent no change to a threat's recent movement.
% Impact (Last 7 Days): This demonstrates a 7-day period change in the frequency of a malware threat infecting PCs. The percentage impact correlates directly to the current Trend Path to determine a rise or decline in the percentage.
Threat Level: | 10/10 |
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Infected PCs: | 7 |
First Seen: | April 27, 2017 |
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Last Seen: | April 18, 2018 |
OS(es) Affected: | Windows |
The Pytehole Ransomware is an open-source Trojan that independent threat actors may modify for delivering to their victims, including potential dropping custom extortion demands, in addition to locking your files. Current versions of the Pytehole Ransomware only encrypt your local content and may block you from opening documents and similar media. Dedicated anti-malware products can block or delete the Pytehole Ransomware at any phase of an attempted infection, and rigorous habits in backing up your files can lower the possible damage it can cause.
A Ten-Year Hole with Trojans Hidden at the Bottom
While the development and deployment cycles of threatening software can be very rapid, con artists sometimes are happy to use old resources for launching threat campaigns in the present day. A particularly well-aged example comes through pasmik.net, a decade-old site verifiable by malware experts recently as having Command & Control connections with a modern, file-encrypting threat. The file-locking Trojan, the Pytehole Ransomware, is not yet in distribution to any targets apparently but does possess a payload that's able to block various files automatically, in perpetuity.
The available samples of the Pytehole Ransomware don't try to communicate with their victims by dropping ransom notes, hijacking the desktop's wallpaper, or even leaving contact data in the filenames of any content they encrypt. The Pytehole Ransomware does create a 'pyteHole' mutex entry to prevent multiple instances of itself from running, from which it derives its name. The code included immediately afterward supports the Pytehole Ransomware's primary attack: a combination of the AES and RSA encryptions.
Without mistakes made by the programmers, this asymmetric encoding method is challenging and sometimes impossible, to crack. Trojans like the Pytehole Ransomware may use it to block different, specified types of data, almost always including documents, pictures, spreadsheets, archives, and other, work-related media. Malware experts did verify the Pytehole Ransomware's using '.adr' extensions for tagging every affected file, which could facilitate determining what content is under its lock-down.
Burying an Open-Air Trojan before It Becomes Everyone's Problem
Other industry experts postulate that once further information is acquired, the Pytehole Ransomware's C&C network could be subject to termination by the hosting company. While doing so would limit the potential deployment of this threat, this Trojan is an open-source threat and may be subjected to additional modifications from different threat actors. Infection vectors most likely of implication in a the Pytehole Ransomware campaign include e-mail attachments, Web browser-based exploits, and brute-force attacks against systems maintaining poor passwords.
Most file-encrypting threats are identifiable thanks to the messages they deliver to their victims, either via graphical images or text. The Pytehole Ransomware doesn't include these features, by default, and may show no symptoms other than having blocked your local files and added its personal extension to the end of their names. Recovery may be impossible without backups, which malware experts recommend restoring from, once your anti-malware protection removes the Pytehole Ransomware.
At present, the Pytehole Ransomware is a poised security issue that has yet to strike. If users continue practicing safe Web-browsing behavior and minding their password security, one can hope that the Pytehole Ransomware will remain a theoretical problem that never triggers in fact.
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