Backdoor.ASP.WEBSHELL.QUWMLDI
HEUR:Backdoor.ASP.WebShell.gen (KASPERSKY)
Windows
Threat Type: Backdoor
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
Downloaded from the Internet, Dropped by other malware, Hosted on a website and runs when user visits the website
This Backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites. It may be hosted on a website and run when a user accesses the said website.
It executes commands from a remote malicious user, effectively compromising the affected system.
TECHNICAL DETAILS
6,860 bytes
ASP
No
04 Oct 2022
Executes commands
Arrival Details
This Backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It may be hosted on a website and run when a user accesses the said website.
Backdoor Routine
This Backdoor executes the following commands from a remote malicious user:
- Execute arbitrary code.
Other Details
This Backdoor does the following:
- It receives codes in the request body sent to the compromised web server where it is hosted, contained in the variable "cmd".
It requires being hosted on a web server in order to proceed with its intended routine.
SOLUTION
9.800
17.860.04
07 Oct 2022
17.861.00
08 Oct 2022
Step 1
Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.
Step 2
Scan your computer with your Trend Micro product to delete files detected as Backdoor.ASP.WEBSHELL.QUWMLDI. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check the following Trend Micro Support pages for more information:
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