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Published Apr 08, 2015
|
Updated Sep 15, 2017
Backdoor:Win32/Zegost.DD
What to do now
Use the following free Microsoft software to detect and remove this threat:
You should also run a full scan. A full scan might find hidden malware.
Get more help
You can also see our advanced troubleshooting page for more help.
If you’re using Windows XP , see our Windows XP end of support page .
Technical information
Threat behavior
Installation
This threat can create files on your PC, including:
Payload
Allows backdoor access and control
This threat can give a malicious hacker access and control of your PC. They can then perform a number of different actions, such as:
Deleting files
Downloading and running files
Logging your keystrokes or stealing your sensitive data
Modifying your system settings
Running or stopping applications
Spreading malware to other PCs
Uploading files
Connects to a remote host
We have seen this threat connect to a remote host, including:
www.siyujiafang.com using port 4002
Malware can connect to a remote host to do any of the following:
Check for an Internet connection Download and run files (including updates or other malware) Report a new infection to its author Receive configuration or other data Receive instructions from a malicious hacker Search for your PC location Upload information taken from your PC Validate a digital certificate
Additional information
Creates a mutex
This threat can create one or more mutexes on your PC. For example:
<malware file>.exe
eed3bd3a-a1ad-4e99-987b-d7cb3fcfa7f0 - S-1-5-21-1844237615-2111687655-839522115-500
www.siyujiafang.com
It might use this mutex as an infection marker to prevent more than one copy of the threat running on your PC.
This malware description was published using automated analysis of file SHA1 324f0f184093952e3effb9129e16323103273726.
Prevention
Symptoms
The following can indicate that you have this threat on your PC:
You see a file similar to:
You see the following mutex:
<malware file>.exe eed3bd3a-a1ad-4e99-987b-d7cb3fcfa7f0 - S-1-5-21-1844237615-2111687655-839522115-500 www.siyujiafang.com
Debug Version = 1.0.0.0;