Trojan.Win32.COBEACON.RJACM

October 26, 2022
 Analysis by: Khristian Joseph Morales
 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:

Downloaded from the Internet, Dropped by other malware

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.

However, as of this writing, the said sites are inaccessible. It gathers information and reports it to its servers.

  TECHNICAL DETAILS

File Size:

53,248 bytes

File Type:

DLL

Memory Resident:

No

Initial Samples Received Date:

04 Oct 2022

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.

Other Details

This Trojan requires the following additional components to properly run:

  • mpengindrv.db → Detected as Trojan.Win32.COBEACON.RJACM.enc

It does the following:

  • It connects to the following URL to download a component which it will load in its memory and perform its malicious routine:
    • http://{BLOCKED}.{BLOCKED}.22.148:443

However, as of this writing, the said sites are inaccessible.

It gathers the following information and reports it to its servers:

  • Computer Name
  • Username
  • Hostname
  • Local IP Address
  • Current Process Name
  • Os Version and Architecture

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

17.896.04

FIRST VSAPI PATTERN DATE:

25 Oct 2022

VSAPI OPR PATTERN File:

17.897.00

VSAPI OPR PATTERN Date:

26 Oct 2022

Step 1

Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.

Step 2

Scan your computer with your Trend Micro product to delete files detected as Trojan.Win32.COBEACON.RJACM. 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:


Did this description help? Tell us how we did.