Trojan.PHP.WEBSHELL.VRR
PHP/PhpShell.NBD!tr (Fortinet); Backdoor:PHP/Remoteshell.Q (MICROSOFT)
Windows, Linux
Threat Type: Backdoor
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
Dropped by other malware, Downloaded from the Internet
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 does not have any propagation routine.
It executes commands from a remote malicious user, effectively compromising the affected system.
TECHNICAL DETAILS
247 bytes
PHP
No
30 Sep 2019
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.
Propagation
This Backdoor does not have any propagation routine.
Backdoor Routine
This Backdoor executes the following commands from a remote malicious user:
- Execute arbitrary code
Other Details
This Backdoor does the following:
- It receive codes from the attacker via POST command on this hosted php file with the variable "nnd".
SOLUTION
9.850
15.400.08
30 Sep 2019
15.401.00
01 Oct 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 Trojan.PHP.WEBSHELL.VRR. 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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