Rootkit.SH.BROOTKIT.A

February 21, 2020
 Analysis by: Karen Ivy Titiwa
 ALIASES:

HackTool:MacOS/Brootkit.A!MT(MICROSOFT); Rootkit.Shell.Agent.a (KASPERSKY)

 PLATFORM:

Linux

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

  • Threat Type: Rootkit

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes


  TECHNICAL DETAILS

File Size:

6,623 bytes

File Type:

Other

Memory Resident:

Yes

Initial Samples Received Date:

19 Feb 2020

Arrival Details

This malware arrives via the following means:

Other Details

This Rootkit does the following:

  • It is used by Trojan.SH.BROOTKIT.B for its rootkit capabilities.
  • It hides processes with the following names:
    • diskmanagerd
    • kacpi_notify
  • It hides files with names containing any of the following strings:
    • emacs.sh
    • kacpi_notify
    • diskmanagerd
  • Capable of hiding ports
  • Overwrites the following terminal bash command:
    • netstat → lists all ports but hides specified ports, if any
    • ls → lists all files and directores but hides files mentioned above
    • ps → lists all processes but hides processess mentioned above

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

15.698.03

FIRST VSAPI PATTERN DATE:

21 Feb 2020

VSAPI OPR PATTERN File:

15.699.00

VSAPI OPR PATTERN Date:

22 Feb 2020

Scan your computer with your Trend Micro product to clean files detected as Rootkit.SH.BROOTKIT.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 the following Trend Micro Support pages for more information:


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