Analysis by: Joselyn Canuela
 ALIASES:

PHP.Backdoor.Trojan(Symactec), Backdoor:PHP/Shell.C (Microsoft), Backdoor.PHP.C99Shell (Ikarus), Backdoor.PHP.C99Shell.cn (Kaspersky)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This backdoor may be hosted on a website and run when a user accesses the said website.

  TECHNICAL DETAILS

Tipo de compactação: 162,707 bytes
Tipo de arquivo: Script
Residente na memória: No
Data de recebimento das amostras iniciais: 26 Sep 2015

Arrival Details

This backdoor may be hosted on a website and run when a user accesses the said website.

Other Details

This backdoor does the following:

  • List files and folders
  • View file and folder information
  • Create a file
  • View a file
  • Provide user full access to files and folders
  • Execute a shell commands
  • Upload/Download a file to/from the web server
  • View list of processes running on the system
  • Manage SQL databases

  SOLUTION

Mecanismo de varredura mínima: 9.850
Primeiro arquivo padrão VSAPI: 12.110.05
Data do lançamento do primeiro padrão VSAPI: 26 Oct 2015
VSAPI OPR Pattern Version: 12.111.00
VSAPI OPR Pattern veröffentlicht am: 27 Oct 2015

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 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 PHP_C99SHELL.JNR. 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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