What is “Backdoor:Win32/Lybsus.A”?

The Backdoor:Win32/Lybsus.A 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.

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What Backdoor:Win32/Lybsus.A virus can do?

• Executable code extraction
• Attempts to connect to a dead IP:Port (2 unique times)
• Creates RWX memory
• A process attempted to delay the analysis task.
• Expresses interest in specific running processes
• Reads data out of its own binary image
• The binary likely contains encrypted or compressed data.
• Checks for the presence of known windows from debuggers and forensic tools
• The following process appear to have been packed with Themida: adk.exe
• Installs itself for autorun at Windows startup
• Checks for the presence of known devices from debuggers and forensic tools
• Detects the presence of Wine emulator via registry key
• Checks the version of Bios, possibly for anti-virtualization
• Detects VirtualBox through the presence of a registry key
• Creates a copy of itself
• Anomalous binary characteristics

Related domains:

How to determine Backdoor:Win32/Lybsus.A?

File Info:
crc32: 2DA89DCF
md5: 337ba7f20a410ff33900c48bbc419439
name: adk.exe
sha1: 69cc6bdc21430a65f868c640bcd6ee161d92adaa
sha256: 3c5ad0b050e1f02d695c9d5ef488af2a7bed5590ae2b083ea9f1d907ed0f2922
sha512: 8761e9aa063d9834e3dcdabdad047f302def23fcc8638b6b19872801ef013d38035bf42960298572f63b950d2e317b8e55d20c9e3390ca5de6c21b78f5dff2e4
ssdeep: 24576:COYrUSjsjNHRamgIsYZS6iOcLX2PJEzh7y9jgKjmTgKxSYorSNuY:COYr3ON8LIsYZSZHj2P+7O7K9NuY
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:
Translation: 0x0409 0x04b0
InternalName: blaky
FileVersion: 1.00
CompanyName: Microsoft
Comments: Indispensable para el funcionamiento del sistema.
ProductName: WinFirewall
ProductVersion: 1.00
FileDescription: Actualizacion de Windows de prioridad maxima
OriginalFilename: blaky.exe

Backdoor:Win32/Lybsus.A also known as:

How to remove Backdoor:Win32/Lybsus.A?

• 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.