Mobef Ransomware
Posted: May 4, 2016
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: | 74 |
First Seen: | May 4, 2016 |
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OS(es) Affected: | Windows |
The Mobef Ransomware is a Trojan that uses multiple data encryption algorithms to encode your data, with the intent of selling a decryption service back to you. Although any encrypted files are effectively inaccessible, other workarounds are available that can render the concept of paying the Mobef Ransomware's ransom an obsolete and unnecessary practice. Malware researchers also continue recommending removing the Mobef Ransomware, and any associated threat, by approved methods before restoring any encrypted information to its original state.
A Trojan Selling You the Key to Your Personal Belongings
The Mobef Ransomware, or Ransom.the Mobef is a potential variant of the Yakes Ransomware and uses similar attacks and ransom messages in its campaign. Like any threatening file encryptor, the Mobef Ransomware scans for any files of potentially work-based content on your hard drives, such as Microsoft Office content, and encrypts a small portion of each file. The encryption algorithms (including AES, RSA, and, more uncommonly, DES), while not notably complex, guarantee that the affected data is illegible to any associated programs, placing your content in a state of lockdown.
Additional files included in the Mobef Ransomware's payload, including various TXT documents, deliver ransom messages for selling its victims a reverse process in the form of a decryptor service. Like the Yakes Ransomware, the Mobef Ransomware asks for further communications to use the BitMessage app or e-mail, with the estimated payments taking place through the Bitcoin cryptocurrency. Unusually, malware experts found two, separate extension names associated with any data encrypted by this threat: 'keyh0les' (which it shares with the Yakes Ransomware) and 'keyx.'
Any PC owners restoring data affected by the Mobef Ransomware should take note that the appended extensions serve as identifier flags and that removing them has no impact on the encryption routine, which affects the underlying data structure of each file.
Excising the Ransom from a Ransom-Based Malware Campaign
The ransoms demanded by file encryption Trojans can range from a low end of several hundred dollars to over one thousand, and most con artists don't provide any form of a verifying 'handshake' process that would prevent them from taking the money without delivering any corresponding service. While the Mobef Ransomware's recent date of emergence means that no public decryptors are yet available for it, providing samples to appropriate PC security institutions upon request can accelerate the development process for such free solutions.
More importantly, keeping backups not stored locally (which would be subject to deletion) can give any victim of the Mobef Ransomware's attacks an inexpensive way of restoring the encrypted content without requiring the decryption key. For now, malware experts only see a very limited number of file encryption Trojans designed with the capacity for compromising cloud storage accounts and detached hard drives are, of course, always safe storage options.
Since this threat doesn't display visible program entries, files or memory processes, you should delete the Mobef Ransomware through using your favored anti-malware program to detect it automatically. However, since these threats typically use previously-established, preventable infection vectors, such as e-mail spam, paying attention to which files you interact with can provide an additional layer of safety beyond that afforded by your security software.
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:Cancel Autoplay 2
File name: Cancel Autoplay 2Size: 172.03 KB (172032 bytes)
MD5: 116d442d8ec5c62f32c7ba507a5569be
Detection count: 64
Group: Malware file
Last Updated: May 5, 2016
ssvagent.exe
File name: ssvagent.exeSize: 84.48 KB (84480 bytes)
MD5: af97e29f412dceeadd8b1e2411113846
Detection count: 59
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: May 5, 2016
Nwiz.dll
File name: Nwiz.dllSize: 32.76 KB (32768 bytes)
MD5: a1dd4a627a9a3d4dc68df7ebeaa9ead4
Detection count: 46
File type: Dynamic link library
Mime Type: unknown/dll
Group: Malware file
Last Updated: May 5, 2016
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