What is “Trojan:Win32/RYUK.DSK!MTB”?

The Trojan:Win32/RYUK.DSK!MTB is considered dangerous by lots of security experts. When this infection is active, you may notice unwanted processes in Task Manager list. In this case, it is adviced to scan your computer with GridinSoft Anti-Malware.

What Trojan:Win32/RYUK.DSK!MTB virus can do?

• Executable code extraction
• Injection (inter-process)
• Injection with CreateRemoteThread in a remote process
• Creates RWX memory
• Mimics the system’s user agent string for its own requests
• Repeatedly searches for a not-found process, may want to run with startbrowser=1 option
• Reads data out of its own binary image
• Unconventionial language used in binary resources: Faeroese
• The binary likely contains encrypted or compressed data.
• Uses Windows utilities for basic functionality
• Detects Sandboxie through the presence of a library
• Detects the presence of Wine emulator via function name
• Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config
• Installs itself for autorun at Windows startup
• Attempts to identify installed analysis tools by a known file location
• Checks for the presence of known devices from debuggers and forensic tools
• Detects the presence of Wine emulator via registry key
• Detects Sandboxie using a known mutex
• Attempts to modify proxy settings
• Checks for a known DeepFreeze Frozen State Mutex
• Collects information to fingerprint the system
• Anomalous binary characteristics

How to determine Trojan:Win32/RYUK.DSK!MTB?

File Info:
crc32: 3AF66488md5: 3a87766b1689354349eaa5fcccb431f1name: 3A87766B1689354349EAA5FCCCB431F1.mlwsha1: 419eefcccd91b02c3535b8b04ce2113ae28d8b12sha256: 7d0105d87d5b472ff34ab964f00e05d4a4a446c09c73146f3f3e9ab6bc653889sha512: b51e73faa658ce7432f8bb0fe8f1a0d0644fca1fff4cd68eb551e95ee6201621da29363ae167058379af76b92b7521fb28a0b02f49930ad0699124fbe30ddf55ssdeep: 3072:Yl5nUsg1ecyOZUnpfWg+ReEFK2gq/FyCUUfIdyktANC2TJMI496hTZ:Ybn0xBZngQK2gMFyHUfukaxcTtype: PE32 executable (GUI) Intel 80386, for MS Windows
Version Info:
0: [No Data]

Trojan:Win32/RYUK.DSK!MTB also known as:

How to remove Trojan:Win32/RYUK.DSK!MTB?

• Download and install GridinSoft Anti-Malware.
• Open GridinSoft Anti-Malware and perform a “Standard scan“.
• “Move to quarantine” all items.
• Open “Tools” tab – Press “Reset Browser Settings“.
• Select proper browser and options – Click “Reset”.
• Restart your computer.