Home Malware Programs Ransomware '.0ff File Extension' Ransomware

'.0ff File Extension' Ransomware

Posted: November 23, 2016

Threat Metric

Threat Level: 10/10
Infected PCs: 9
First Seen: November 23, 2016
Last Seen: July 22, 2019
OS(es) Affected: Windows

The '.0ff File Extension' Ransomware is a member of the Filecoder family of file-encrypting Trojans. Its attacks can modify and block your files by enciphering their contents, with other symptoms including various formats of text messages soliciting ransom money. Backup strategies can alleviate the need for decrypting the above data, and anti-malware programs can remove the '.0ff File Extension' Ransomware at any point of the infection.

A Trojan Coming Back out of Retirement

Activity in Trojan campaigns can be inconsistent sometimes, either due to questionable methods of distribution or changes in the threat actor's administrative actions. Even though many Trojans earn media attention from sustained spikes of activity that proceed to fall off completely, others, like the '.0ff File Extension' Ransomware, may vanish for a time, only to appear again months or years later. This stasis period doesn't seem to have been caused by any significant updates to the '.0ff File Extension' Ransomware, which is using many of the same components previously detected by the cyber security industry one year ago.

Malware researchers began to find signs of renewed activity in November, possibly as a result of new e-mail spam, exploit kit-based drive-by-downloads or hacked RDP systems. The '.0ff File Extension' Ransomware's installation may self-terminate the program in well-protected machines, such as virtual environments, to prevent its analysis. In cases where the Trojan is allowed to complete its payload, the '.0ff File Extension' Ransomware scans local, network-mapped and removable drives for certain files and encodes them with a (currently uncracked) encryption algorithm.

Although the victim can ascertain the file damage quickly by looking for data using the '.0ff' extension that the '.0ff File Extension' Ransomware inserts into the names, they're unusable without a decryption procedure. The '.0ff File Extension' Ransomware then drops a Notepad file containing its ransom message asking you to use Bitmessage to initiate communications with the threat actors. Malware experts failed to find any further information about fees in demand for the decryption service, although an extorted sum often starts at several hundred dollars, at a minimum.

Pulling an Old Trojan '0ff' of Your Files

While it can be tempting to assume that a Trojan that's no longer in news headlines is no longer a problem, the '.0ff File Extension' Ransomware and threats like it testify as to the continuing efficacy of even out of date threat campaigns. Standards for protection against its most probable distribution tactics include many of the steps malware experts suggest habitually for all PC users, including maintaining your backups, keeping to a rotation of passwords, and monitoring browser settings for potentially exploitable features. Fully reversing the file damage the '.0ff File Extension' Ransomware causes may not be possible, which places additional importance on preventing an infection.

Due to its age, most anti-malware products should have few or no issues with identifying and removing the '.0ff File Extension' Ransomware, which is detectable as being a variant of FileCoder typically. While the above constitutes the majority of this threat's activities, malware analysts also note some minor network activity that may benefit the threat actors controlling the '.0ff File Extension' Ransomware. Use Safe Mode or alternate system boot-up options for disabling this threat before you scan your computer.

'Old but not yet dead' is the rallying cry of Trojans like the '.0ff File Extension' Ransomware, which you shouldn't underestimate for the potential harm they're capable of causing.

Use SpyHunter to Detect and Remove PC Threats

If you are concerned that malware or PC threats similar to '.0ff File Extension' Ransomware may have infected your computer, we recommend you start an in-depth system scan with SpyHunter. SpyHunter is an advanced malware protection and remediation application that offers subscribers a comprehensive method for protecting PCs from malware, in addition to providing one-on-one technical support service.

Download SpyHunter's Malware Scanner

Note: SpyHunter's free version is only for malware detection. If SpyHunter detects malware on your PC, you will need to purchase SpyHunter's malware tool to remove the malware threats. Learn more on SpyHunter. If you would like to uninstall SpyHunter for any reason, please follow these uninstall instructions. To learn more about our policies and practices, visit our EULA, Privacy Policy and Threat Assessment Criteria .

Why can't I open any program including SpyHunter? You may have a malware file running in memory that kills any programs that you try to launch on your PC. Tip: Download SpyHunter from a clean computer, copy it to a USB thumb drive, DVD or CD, then install it on the infected PC and run SpyHunter's malware scanner.

Technical Details

File System Modifications

Tutorials: If you wish to learn how to remove malware components manually, you can read the tutorials on how to find malware, kill unwanted processes, remove malicious DLLs and delete other harmful files. Always be sure to back up your PC before making any changes.

The following files were created in the system:

file.exe File name: file.exe
Size: 2.05 MB (2057974 bytes)
MD5: 217c23371f1d91e81beac74a759be045
Detection count: 5
File type: Executable File
Mime Type: unknown/exe
Group: Malware file