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: 921,600 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 02 Jun 2016

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.

Installation

This backdoor drops the following copies of itself into the affected system:

  • %Windows%\update.5.0\svchost.exe

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

It creates the following folders:

  • %Windows%\update.5.0

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

Other System Modifications

This backdoor adds the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\btcclient

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\btcclient
close = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\btcclient
close = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\btcclient
ver = "1.59"

Other Details

This backdoor connects to the following possibly malicious URL:

  • {BLOCKED}0.204.3
  • {BLOCKED}.119.210
  • {BLOCKED}210.175
  • {BLOCKED}.14.11
  • {BLOCKED}.68.17
  • {BLOCKED}.218.177
  • {BLOCKED}150.191
  • {BLOCKED}.150.94
  • {BLOCKED}.149.5
  • {BLOCKED}.194.206
  • {BLOCKED}.240.42
  • {BLOCKED}.122.175
  • {BLOCKED}17.109
  • {BLOCKED}177.185
  • {BLOCKED}9.221.94
  • {BLOCKED}.115.31
  • {BLOCKED}0.252.20
  • {BLOCKED}7.114.209
  • {BLOCKED}121.102
  • {BLOCKED}.245.254
  • {BLOCKED}.88.213
  • {BLOCKED}3.170.209
  • {BLOCKED}.17.188
  • {BLOCKED}7.128.59
  • {BLOCKED}7.115.162
  • {BLOCKED}.120.26
  • {BLOCKED}.238.148
  • {BLOCKED}.198.142
  • {BLOCKED}.129.20
  • {BLOCKED}126.157
  • {BLOCKED}.112.89
  • {BLOCKED}9.36.97
  • {BLOCKED}0.79.156
  • {BLOCKED}86.248
  • {BLOCKED}.78.131
  • {BLOCKED}1.255.209
  • {BLOCKED}.143.238
  • {BLOCKED}.231.113
  • {BLOCKED}1.142.83
  • {BLOCKED}.199.149
  • {BLOCKED}.58.1
  • {BLOCKED}.208.13
  • {BLOCKED}69.17
  • {BLOCKED}.72.89
  • {BLOCKED}1.52.36
  • {BLOCKED}0.162.172
  • {BLOCKED}.15.238
  • {BLOCKED}.134.40
  • {BLOCKED}0.249.6
  • {BLOCKED}.149.103
  • {BLOCKED}.111.178
  • {BLOCKED}.2.186
  • {BLOCKED}.231.164
  • {BLOCKED}.167.79
  • {BLOCKED}.16.34
  • {BLOCKED}.251.222
  • {BLOCKED}.164.48
  • {BLOCKED}1.72.166

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine: 9.8

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

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_LOCAL_MACHINE\SOFTWARE
    • btcclient

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_LOCAL_MACHINE\SOFTWARE\btcclient
    • close = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\btcclient
    • close = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\btcclient
    • ver = "1.59"

Step 4

Search and delete this folder

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.
  • %Windows%\update.5.0

Step 5

Scan your computer with your Trend Micro product to delete files detected as BKDR_BTCMINE.MNR. 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 this Knowledge Base page for more information.


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