Analysis by: Warren Adam Sto. Tomas
 PLATFORM:

Linux

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Infection Channel: Dropped by other malware, Downloaded from the Internet

This Trojan 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 downloaded by other malware/grayware from remote sites.

  TECHNICAL DETAILS

File Size: 2141224 bytes
File Type: ELF
Memory Resident: No
Initial Samples Received Date: 21 Feb 2019
Payload: Connects to URLs/IPs

Arrival Details

This Trojan 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 downloaded by the following malware/grayware from remote sites:

Download Routine

This Trojan connects to the following URL(s) to download its component file(s):

  • https://{BLOCKED}ra.in/api/download/-7A5aP - list of passwords to use in brute forcing MSSQL database
  • https://{BLOCKED}ra.in/api/download/I9RRye - list of IP addresses

Other Details

This Trojan does the following:

  • It scans either randomly-generated or specific IP addresses over the Internet to try and exploit vulnerable devices
  • It takes advantage of the following vulnerabilities to remotely execute commands on exploited devices:
  • It also tries to brute force the following databases to execute commands:
    • MSSQL
    • Redis

  SOLUTION

Minimum Scan Engine: 9.850
FIRST VSAPI PATTERN FILE: 14.828.06
FIRST VSAPI PATTERN DATE: 21 Feb 2019
VSAPI OPR PATTERN File: 14.829.00
VSAPI OPR PATTERN Date: 22 Feb 2019

Scan your computer with your Trend Micro product to delete files detected as Trojan.Linux.GOSCAN.AA. 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 the following Trend Micro Support pages for more information:


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