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

Tamaño del archivo 162,707 bytes
Tipo de archivo Script
Residente en memoria No
Fecha de recepción de las muestras iniciales 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

Motor de exploración mínimo 9.850
Primer archivo de patrones de VSAPI 12.110.05
Primera fecha de publicación de patrones de VSAPI 26 Oct 2015
Versión de patrones OPR de VSAPI 12.111.00
Fecha de publicación de patrones OPR de VSAPI 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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