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Threat Encyclopedia

PERL_EXPLOYT.PLK

ANALYSIS BY

Alvin Bacani


PLATFORM:

Linux

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

  • Threat Type:Trojan

  • Destructiveness:No

  • Encrypted: No

  • In the wild: Yes

OVERVIEW

Infection Channel:

Downloaded from the Internet


This is the detection for exploit codes that takes advantage of a vulnerability in the hosting control panel Plesk.

To get a one-glance comprehensive view of the behavior of this Trojan, refer to the Threat Diagram shown below.

This malware is a zero-day exploit that affects Plesk systems in Linux operating systems.

It attempts to connect to the target computer by sending out an HTTP POST. Allowing it to execute certain parameters lowers the security of the target machine.

TECHNICAL DETAILS

File Size:

3,585 bytes

File Type:

, Script

Memory Resident:

No

Initial Samples Received Date:

06 Jun 2013

Payload:

Compromises system security

NOTES:

This malware uses the following parameters to execute:

%ScriptFile% [Target IP] [http|https] [Local IP] [Local Port]

The variables mentioned above are:

  • [Target IP] - the IP address of the remote machine
  • [http|https] - enables or disables SSL connection
  • [Local IP] - IP address of the affected computer
  • [Local Port] - port where the remote machine connects to

This malware attempts to connect to the target computer by sending out an HTTP POST. Allowing it to execute certain parameters lowers the security of the target machine.

It then sends a PHP script that enables remote shell using the data local IP and local port.

SOLUTION

Minimum Scan Engine:

9.300

FIRST VSAPI PATTERN FILE:

9.964.04

FIRST VSAPI PATTERN DATE:

06 Jun 2013

VSAPI OPR PATTERN File:

9.965.00

VSAPI OPR PATTERN Date:

06 Jun 2013

Scan your computer with your Trend Micro product to delete files detected as PERL_EXPLOYT.PLK. 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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