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Backdoor.Win32.SOCMER.THJAOAI

October 10, 2019
 ALIASES:

Backdoor.Win32.Remcos.jif (Kaspersky)

 PLATFORM:

Windows

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

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This Backdoor 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:

203,264 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

10 Oct 2019

Arrival Details

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

Other System Modifications

This Backdoor adds the following registry keys:

HKEY_CURRENT_USER\Software\Remcos-8N5JSJ

It adds the following registry entries:

HKEY_CURRENT_USER\Software\Remcos-8N5JSJ
exepath = "{random characters}"

HKEY_CURRENT_USER\Software\Remcos-8N5JSJ
licence = "42581A584A55BED5F2772369E1735731"

Other Details

This Backdoor connects to the following possibly malicious URL:

  • http://{BLOCKED}links.com
  • http://{BLOCKED}olutions.com
  • {BLOCKED}.163.83
  • {BLOCKED}8.249.88

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.850

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

Delete this registry key

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_CURRENT_USER\Software
    • Remcos-8N5JSJ

Step 3

Delete this registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_CURRENT_USER\Software\Remcos-8N5JSJ
    • exepath = "{random characters}"
  • In HKEY_CURRENT_USER\Software\Remcos-8N5JSJ
    • licence = "42581A584A55BED5F2772369E1735731"

Step 4

Scan your computer with your Trend Micro product to delete files detected as Backdoor.Win32.SOCMER.THJAOAI. 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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