Backdoor:Win32/Zegost.EF!bit removal

The Backdoor:Win32/Zegost.EF!bit 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/Zegost.EF!bit virus can do?

• Executable code extraction
• Creates RWX memory
• Repeatedly searches for a not-found process, may want to run with startbrowser=1 option
• Drops a binary and executes it
• Performs some HTTP requests
• The binary likely contains encrypted or compressed data.
• The executable is compressed using UPX
• Uses Windows utilities for basic functionality
• Deletes its original binary from disk
• Checks for the presence of known windows from debuggers and forensic tools
• A process attempted to delay the analysis task by a long amount of time.
• Installs itself for autorun at Windows startup
• Creates a hidden or system file
• Checks for the presence of known devices from debuggers and forensic tools
• Uses suspicious command line tools or Windows utilities

Related domains:

How to determine Backdoor:Win32/Zegost.EF!bit?

File Info:
crc32: C625D3DE
md5: 8537eb231a92a1202c2ba3cbbd631ebb
name: sznamu.exe
sha1: 216f4c3ea3e3eff465e0a6b93f04682126bd8550
sha256: d8c171f58dda6112e74735d22e8dc4e39df1ab4984010c8f77e256472456c21c
sha512: fc873bbe4c9b6fdc4f70f42b460b26821606e91857a7c7d96657cf7b8849a5078cdc20bf18fe133ac191d72b10bb69429c9bb0c3bc81cb92834b11548bcde94c
ssdeep: 1536:0yr2qzrEPsX/JC23npYxnouy8OcW029Xmp+rEW6axogG9Z5Rb:0yKqzoPW/JFXpOoutOcw92p+YIuh
type: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:
LegalCopyright: Copyright(C) 1998-2015 Wjj Software
InternalName: nyfedit
FileVersion: 7.0.0.0
CompanyName: Wjj Software
PrivateBuild: 
LegalTrademarks: All Rights Reserved
Comments: myBase Desktop 7.x
ProductName: myBase Desktop 7.x
SpecialBuild: 
ProductVersion: 7.x
FileDescription: myBase Desktop 7.x
OriginalFilename: nyfedit.exe
Translation: 0x0409 0x04e4

Backdoor:Win32/Zegost.EF!bit also known as:

How to remove Backdoor:Win32/Zegost.EF!bit?

• 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.