Backdoor:Win32/Zegost.CH (file analysis)

The Backdoor:Win32/Zegost.CH 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.CH virus can do?

• Attempts to connect to a dead IP:Port (1 unique times)
• Possible date expiration check, exits too soon after checking local time
• Expresses interest in specific running processes
• Drops a binary and executes it
• Unconventionial binary language: Chinese (Simplified)
• Unconventionial language used in binary resources: Chinese (Simplified)
• Attempts to repeatedly call a single API many times in order to delay analysis time
• Installs itself for autorun at Windows startup
• Creates a copy of itself

How to determine Backdoor:Win32/Zegost.CH?

File Info:
crc32: F9C5B796
md5: 44238118d7071c8ba2a2ba7aac506737
name: dvwacc1.exe
sha1: 3452fa5d5930ee29a0e6bf365ad62a7e84596fcc
sha256: c5cce6130d179cb03aea383a80b329a165e64903ce55b59336cacaea96f13c04
sha512: d6a4df78511dbb944706236cc99bb759ddddf7be12f3583fa292f9a0681bf3da93eca6589955d836c2fd1cfc9bbcede3815488ed5448061b8e73f0a8a457ecd0
ssdeep: 3072:0PuFP9wPK9fHwkDygAs8sslc7T0qSz4ty:0QWCHwoQsI0T0
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:
LegalCopyright: java
InternalName: Copyright ? 2013
FileVersion: 7.0.110.21
CompanyName: Oracle Corporation
PrivateBuild: 
LegalTrademarks: 
Comments: 
ProductName: Java(TM) Platform SE 7 U11
SpecialBuild: 
ProductVersion: 7.0.110.21
FileDescription: Java(TM) Platform SE binary
OriginalFilename: java.exe
Translation: 0x0804 0x04b0

Backdoor:Win32/Zegost.CH also known as:

How to remove Backdoor:Win32/Zegost.CH?

• 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.