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ELF_PERSIRAI.A

April 25, 2017
 Analysis by: John Anthony Banes
 PLATFORM:

Linux

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

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet, Dropped by other malware

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 connects to certain websites to send and receive information.

  TECHNICAL DETAILS

File Size:

121,260 bytes

File Type:

ELF

Memory Resident:

Yes

Initial Samples Received Date:

24 Apr 2017

Payload:

Connects to URLs/IPs, Downloads files, Terminates processes

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.

Process Termination

This Backdoor terminates processes or services that contain any of the following strings if found running in the affected system's memory:

  • encoder

Other Details

This Backdoor connects to the following website to send and receive information:

  • load.{BLOCKED}t.ir
  • ntp.{BLOCKED}t.ir
  • {BLOCKED}.{BLOCKED}.189.232
  • {BLOCKED}.{BLOCKED}.38.103

It does the following:

  • Uses common or factory-default usernames and passwords to login to attacked devices.
  • Downloads files
  • Performs DDOS attacks
  • Executes code

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

13.360.04

FIRST VSAPI PATTERN DATE:

24 Apr 2017

VSAPI OPR PATTERN File:

13.361.00

VSAPI OPR PATTERN Date:

25 Apr 2017

Scan your computer with your Trend Micro product to delete files detected as ELF_PERSIRAI.A. 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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