Analysis by: Arvin Roi Macaraeg
ALIASES:

VirTool:Win64/Glupteba.B (MICROSOFT), Rootkit.Win64.Agent.avn(KASPERSKY)

 PLATFORM:

Windows

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

  • Threat Type: Rootkit

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

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

This Rootkit arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File Size: 23,272 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 24 Jan 2018
Payload: Hides files and processes

Arrival Details

This Rootkit arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Rootkit Capabilities

This Rootkit is used by other malware for its rootkit functionalities.

Other Details

This Rootkit does the following:

  • Hides the process of itself.
  • Hides the following files:
    • %Windows%\windefender.exe
    • %System%\drivers\Winmon.sys
    • %System%\drivers\WinmonFS.sys
    • {Filename and path}
  • Hides the following directories:
    • %Windows%\rss
    • {Directory}

(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)

  SOLUTION

Minimum Scan Engine: 9.850
FIRST VSAPI PATTERN FILE: 14.668.04
FIRST VSAPI PATTERN DATE: 05 Dec 2018
VSAPI OPR PATTERN File: 14.669.00
VSAPI OPR PATTERN Date: 06 Dec 2018

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 3

Scan your computer with your Trend Micro product to delete files detected as ROOTKIT.WIN64.GLUPTEBA.B. 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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