Backdoor.ASP.WEBSHELL.AX
ASP:Rootkit-C (AVAST); Backdoor.ASP.Rootkit.10.a (KASPERSKY)
Windows
Threat Type: Backdoor
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
Downloaded from the Internet, Dropped by other malware, Hosted on a 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 runs certain commands that it receives remotely from a malicious user. Doing this puts the affected computer and information found on the computer at greater risk.
TECHNICAL DETAILS
956 bytes
ASP
07 Mar 2019
Connects to URLs/IPs
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 command(s) from a remote malicious user:
- Execute Arbitrary Codes
Other Details
This Backdoor does the following:
- It receive codes from the attacker via GET command on this hosted ASP file
- Displays the following when accessed:
It requires being hosted on a web server in order to proceed with its intended routine.
SOLUTION
9.850
14.870.05
14 Mar 2019
14.871.00
15 Mar 2019
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.AX. 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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