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Trojan.Linux.MALXMR.UWEKV

June 10, 2020
 Analysis by: Patrick Noel Collado
 ALIASES:

Trojan.Linux.Coinminer (Ikarus), ELF:Miner-AC [Trj] (Avast)

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • 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:

1,472,160 bytes

File Type:

ELF

Memory Resident:

Yes

Initial Samples Received Date:

08 Jun 2020

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:

  • Trojan.SH.MALXMR.UWEKB

Other Details

This Trojan does the following:

    • Serves as the watchdog process that mainly does four things:
    • Check if cron persistence exists and adds if it does not
    • Check if required processes are running and runs them if they are not
    • Check if new versions of the malware are available. Can update the miner, config, scanner, and watchdog binaries
    • Check if the C&C server is active. If the server is not active, this malware looks for a hard-coded address via the Ethereum blockchain explorer then downloads Trojan.SH.MALXMR.UWEKB to start the infection process from the beginning.

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

15.918.05

FIRST VSAPI PATTERN DATE:

08 Jun 2020

VSAPI OPR PATTERN File:

15.919.00

VSAPI OPR PATTERN Date:

09 Jun 2020

Step 1

Scan your computer with your Trend Micro product to delete files detected as Trojan.Linux.MALXMR.UWEKV. 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:

Step 2

Remove malware/grayware files dropped/downloaded by Trojan.Linux.MALXMR.UWEKV. (Note: Please skip this step if the threats listed below have already been removed.)


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