PHP_SIMPLESHELL.E
Backdoor:PHP/SimpleShell.A (Microsoft);Backdoor.PHP.C99Shell.ir (Kaspersky); Troj/PHPShl-AK (Sophos)
Windows, Linux
Threat Type: Backdoor
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
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.
TECHNICAL DETAILS
1,515 bytes
Script
13 Apr 2015
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.
Installation
This backdoor drops the following files:
- {document root directory where the script is executing}/images/stories/food/footer.php
SOLUTION
9.750
11.632.04
27 Apr 2015
11.633.00
28 Apr 2015
Step 1
Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.
Step 2
Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.
Step 3
Search and delete this file
- {document root folder where script executes}/images/stories/food/footer.php
Step 4
Scan your computer with your Trend Micro product to delete files detected as PHP_SIMPLESHELL.E. 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 this Knowledge Base page for more information.
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