Analysis by: Thea Patrice Tajonera
ALIASES:

Trojan.Win64.Miner.alad (KASPERSKY); Trojan.Win64.Zapchast (VBA32)

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel: Downloaded from the Internet

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.

  TECHNICAL DETAILS

File Size: 364,032 bytes
File Type: DLL
Memory Resident: Yes
Initial Samples Received Date: 26 Nov 2020
Payload: Connects to URLs/IPs, Steals information

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.

Installation

This Trojan adds the following folders:

  • %Windows%\Fonts\clientdb
  • %Windows%\Fonts\clientdb\ds
  • %Windows%\Fonts\clientdb\gt
  • %Windows%\Fonts\Swil

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

It drops the following files:

  • %Windows%\Fonts\clientdb\ds \{Random Numbers}
  • %Windows%\Fonts\clientdb\gt \{Random Numbers}
  • %Windows%\Fonts\Swil\pro_logs
  • %System%\LogFiles\rubescurity.exe -> detected as Coinminer.Win32.MALXMR.TDQ
  • %System%\LogFiles\normaliz.dll
  • %System%\LogFiles\miscoboeh.exe -> detected as Coinminer.Win32.MALXMR.TIAOODFG

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

It adds the following processes:

  • “%System%\LogFiles\miscoboeh.exe” allbit32 wxp|w2003 mwrite:0 ewrite:0 twrite:0 newrun:1 flag:2 c: 3 stopwork:nope “{Defined String}”
  • %System%\LogFiles\rubescurity.exe -a yespowersugar –o stratum+tcp”//146.59.217.34:7042 –u sugar1qtcx5933wwh769lvxu5k05w63eszq6epgf075lz -p x –t 1
  • “%System%\LogFiles\miscoboeh.exe” allbit32 wxp|w2003 mwrite:0 ewrite:0 twrite:0 newrun:1 flag:2 c: 3 stopwork:nope “{Defined String}”

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

Other System Modifications

This Trojan adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
SHTinfo
sha1 = {Malware Defined Values}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
SHTinfo
notice = {Malware Defined Values}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
SHTinfo
tunnel = {Malware Defined Values}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
SHTinfo
peer = {Hex Values}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
SHTinfo
intranet = {Hex Values}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
SHTinfo
comment = {Hex Values}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
SHTinfo
forward = {Hex Values}

Information Theft

This Trojan gathers the following data:

  • Computer Name
  • Username
  • CPU Information
  • Local Time

Other Details

This Trojan adds the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
SHTinfo

It does the following:

  • It uses the following uncommon ports:
    • 27930
    • 65083
  • It sends UDP packets to any of the following IP addresses within the network range:
    • {BLOCKED}.186.248.1 up to {BLOCKED}.186.248.255
    • {BLOCKED}.187.39.1 up to {BLOCKED}.187.39.255
    • {BLOCKED}.73.246.1 up to {BLOCKED}.73.246.255
    • {BLOCKED}.106.4.1 up to {BLOCKED}.106.4.255
    • {BLOCKED}.66.37.1 up to {BLOCKED}.66.37.255
    • {BLOCKED}.71.202.1 up to {BLOCKED}.71.202.255
    • {BLOCKED}.106.93.1 up to {BLOCKED}.106.93.255
    • {BLOCKED}.39.186.1 up to {BLOCKED}.39.186.255
    • {BLOCKED}.61.81.1 up to {BLOCKED}.61.81.255
    • {BLOCKED}.225.21.1 up to {BLOCKED}.225.21.255
    • {BLOCKED}.120.39.1 up to {BLOCKED}.120.39.255
    • {BLOCKED}.209.73.1 up to {BLOCKED}.209.73.255
    • {BLOCKED}.48.109.1 up to {BLOCKED}.48.109.255
    • {BLOCKED}.206.30.1 up to {BLOCKED}.206.30.255
    • {BLOCKED}.90.201.1 up to {BLOCKED}.90.201.255
    • {BLOCKED}.246.6.1 up to {BLOCKED}.246.6.255
    • {BLOCKED}.150.27.1 up to {BLOCKED}.150.27.255
    • {BLOCKED}.68.198.1 up to {BLOCKED}.68.198.255
    • {BLOCKED}.44.137.1 up to {BLOCKED}.44.137.255
    • {BLOCKED}.76.139.1 up to {BLOCKED}.76.139.255
    • {BLOCKED}.36.184.1 up to {BLOCKED}.36.184.255
    • {BLOCKED}.77.203.1 up to {BLOCKED}.77.203.255
    • {BLOCKED}.193.17.1 up to {BLOCKED}.193.17.255
    • {BLOCKED}.223.128.1 up to {BLOCKED}.223.128.255
    • {BLOCKED}.176.100.1 up to {BLOCKED}.176.100.255
    • {BLOCKED}.69.231.1 up to {BLOCKED}.69.231.255
    • {BLOCKED}.76.51.1 up to {BLOCKED}.76.51.255
    • {BLOCKED}.73.15.1 up to {BLOCKED}.73.15.255
    • {BLOCKED}.165.166.1 up to {BLOCKED}.165.166.255
    • {BLOCKED}.220.1.1 up to {BLOCKED}.220.1.255
    • {BLOCKED}.207.145.1 up to {BLOCKED}.207.145.255
    • {BLOCKED}.88.33.1 up to {BLOCKED}.88.33.255
    • {BLOCKED}.147.83.1 up to {BLOCKED}.147.83.255
    • {BLOCKED}.122.123.1 up to {BLOCKED}.122.123.255
    • {BLOCKED}.160.58.1 up to {BLOCKED}.160.58.255
    • {BLOCKED}.16.6.1 up to {BLOCKED}.16.6.255
    • {BLOCKED}.29.213.1 up to {BLOCKED}.29.213.255
    • {BLOCKED}.47.33.1 up to {BLOCKED}.47.33.255
    • {BLOCKED}.61.168.1 up to {BLOCKED}.61.168.255
    • {BLOCKED}.194.189.1 up to {BLOCKED}.194.189.255
    • {BLOCKED}.111.189.1 up to {BLOCKED}.111.189.255
    • {BLOCKED}.191.125.1 up to {BLOCKED}.191.125.255
    • {BLOCKED}.248.121.1 up to {BLOCKED}.248.121.255
    • {BLOCKED}.72.131.1 up to {BLOCKED}.72.131.255
    • {BLOCKED}.72.194.1 up to {BLOCKED}.72.194.255
    • {BLOCKED}.74.93.1 up to {BLOCKED}.74.93.255
    • {BLOCKED}.82.112.1 up to {BLOCKED}.82.112.255
    • {BLOCKED}.88.218.1 up to {BLOCKED}.88.218.255
    • {BLOCKED}.53.152.1 up to {BLOCKED}.53.152.255
    • {BLOCKED}.44.128.1 up to {BLOCKED}.44.128.255
    • {BLOCKED}.50.235.1 up to {BLOCKED}.50.235.255
    • {BLOCKED}.251.12.1 up to {BLOCKED}.251.12.255
    • {BLOCKED}.71.0.1 up to {BLOCKED}.71.0.255
    • {BLOCKED}.83.31.1 up to {BLOCKED}.83.31.255
    • {BLOCKED}.172.56.1 up to {BLOCKED}.172.56.255
    • {BLOCKED}.126.127.1 up to {BLOCKED}.126.127.255
    • {BLOCKED}.235.34.1 up to {BLOCKED}.235.34.255
    • {BLOCKED}.248.16.1 up to {BLOCKED}.248.16.255
    • {BLOCKED}.91.168.1 up to {BLOCKED}.91.168.255
    • {BLOCKED}.192.80.0 up to {BLOCKED}.192.97.255
    • {BLOCKED}.52.5.0 up to {BLOCKED}.52.15.255
    • {BLOCKED}.126.190.0 up to {BLOCKED}.126.255.255
    • {BLOCKED}.187.25.0 up to {BLOCKED}.187.50.255
    • {BLOCKED}.192.1.0 up to {BLOCKED}.192.25.255
    • {BLOCKED}.156.210.0 up to {BLOCKED}.156.250.255
    • {BLOCKED}.106.1.0 up to {BLOCKED}.106.26.255
    • {BLOCKED}.60.252.0 up to {BLOCKED}.60.255.255
    • {BLOCKED}.89.140.0 up to {BLOCKED}.89.165.255
    • {BLOCKED}.33.60.0 up to {BLOCKED}.33.90.255
    • {BLOCKED}.240.90.0 up to {BLOCKED}.240.115.255
    • {BLOCKED}.32.85.0 up to {BLOCKED}.32.120.255
    • {BLOCKED}.209.60.0 up to {BLOCKED}.209.85.255
    • {BLOCKED}.88.50.0 up to {BLOCKED}.88.60.255
    • {BLOCKED}.64.140.0 up to {BLOCKED}.64.165.255
    • {BLOCKED}.90.150.0 up to {BLOCKED}.90.175.255
    • {BLOCKED}.94.140.0 up to {BLOCKED}.94.165.255
    • {BLOCKED}.164.40.0 up to {BLOCKED}.164.65.255
    • {BLOCKED}.68.185.0 up to {BLOCKED}.68.210.255
    • {BLOCKED}.91.100.0 up to {BLOCKED}.91.110.255
    • {BLOCKED}.147.230.0 up to {BLOCKED}.147.255.255
    • {BLOCKED}.49.200.0 up to {BLOCKED}.49.225.255
    • {BLOCKED}.4.90.0 up to {BLOCKED}.4.115.255
    • {BLOCKED}.219.185.0 up to {BLOCKED}.219.200.255
    • {BLOCKED}.110.5.0 up to {BLOCKED}.110.15.255
    • {BLOCKED}.44.120.0 up to {BLOCKED}.44.150.255
    • {BLOCKED}.61.211.0 up to {BLOCKED}.61.240.255
    • {BLOCKED}.166.85.0 up to {BLOCKED}.166.100.255
    • {BLOCKED}.248.35.0 up to {BLOCKED}.248.75.255
    • {BLOCKED}.244.50.0 up to {BLOCKED}.244.60.255
    • {BLOCKED}.109.70.0 up to {BLOCKED}.109.85.255
    • {BLOCKED}.245.20.0 up to {BLOCKED}.245.38.255
    • {BLOCKED}.160.180.0 up to {BLOCKED}.160.200.255
    • {BLOCKED}.161.140.0 up to {BLOCKED}.161.165.255
    • {BLOCKED}.176.90.0 up to {BLOCKED}.176.110.255
    • {BLOCKED}.165.145.0 up to {BLOCKED}.165.175.255
    • {BLOCKED}.58.220.0 up to {BLOCKED}.58.245.255
    • {BLOCKED}.4.230.0 up to {BLOCKED}.4.255.255
    • {BLOCKED}.91.60.255
    • {BLOCKED}.102.185.0 up to {BLOCKED}.102.200.255
    • {BLOCKED}.220.1.0 up to {BLOCKED}.220.20.255
    • {BLOCKED}.254.65.0 up to {BLOCKED}.254.75.255
    • {BLOCKED}.58.210.0 up to {BLOCKED}.58.240.255
    • {BLOCKED}.147.75.0 up to {BLOCKED}.147.90.255
    • {BLOCKED}.117.150.0 up to {BLOCKED}.117.175.255
    • {BLOCKED}.170.1.0 up to {BLOCKED}.170.15.255
    • {BLOCKED}.19.145.0 up to {BLOCKED}.19.160.255
    • {BLOCKED}.74.150.0 up to {BLOCKED}.74.165.255
    • {BLOCKED}.81.230.0 up to {BLOCKED}.81.255.255
    • {BLOCKED}.234.25.0 up to {BLOCKED}.234.55.255
    • {BLOCKED}.238.50.0 up to {BLOCKED}.238.80.255
    • {BLOCKED}.192.85.0 up to {BLOCKED}.192.115.255
    • {BLOCKED}.203.10.0 up to {BLOCKED}.203.30.255
    • {BLOCKED}.61.155.0 up to {BLOCKED}.61.175.255
    • {BLOCKED}.129.165.0 up to {BLOCKED}.129.185.255
    • {BLOCKED}.251.230.0 up to {BLOCKED}.251.255.255
    • {BLOCKED}.74.85.0 up to {BLOCKED}.74.105.255
    • {BLOCKED}.82.110.0 up to {BLOCKED}.82.130.255
    • {BLOCKED}.61.180.0 up to {BLOCKED}.61.210.255
    • {BLOCKED}.90.155.0 up to {BLOCKED}.90.180.255
    • {BLOCKED}.29.60.0 up to {BLOCKED}.29.70.255
    • {BLOCKED}.88.155.0 up to {BLOCKED}.88.180.255
    • {BLOCKED}.82.152.0 up to {BLOCKED}.82.175.255
    • {BLOCKED}.61.130.0 up to {BLOCKED}.61.165.255
    • {BLOCKED}.45.210.0 up to {BLOCKED}.45.245.255
    • {BLOCKED}.50.220.0 up to {BLOCKED}.50.255.255
    • {BLOCKED}.251.1.0 up to {BLOCKED}.251.25.255
    • {BLOCKED}.254.170.0 up to {BLOCKED}.254.180.255
    • {BLOCKED}.133.40.0 up to {BLOCKED}.133.70.255
    • {BLOCKED}.124.45.0 up to {BLOCKED}.124.65.255
    • {BLOCKED}.235.25.0 up to {BLOCKED}.235.50.255
    • {BLOCKED}.134.190.0 up to {BLOCKED}.134.200.255
    • {BLOCKED}.168.244.143 up to {BLOCKED}.168.244.255
      • {BLOCKED}.168.0.70 up to {BLOCKED}.168.0.255
    • {BLOCKED}.168.1.0 up to {BLOCKED}.168.1.255
    • {BLOCKED}.168.2.1 up to {BLOCKED}.168.2.255
    • {BLOCKED}.168.3.1 up to {BLOCKED}.168.3.255
    • {BLOCKED}.168.4.0 up to {BLOCKED}.168.4.255
    • {BLOCKED}.168.5.0 up to {BLOCKED}.168.5.255
    • {BLOCKED}.168.6.0 up to {BLOCKED}.168.6.255
    • {BLOCKED}.168.7.0 up to {BLOCKED}.168.7.255
    • {BLOCKED}.168.8.0 up to {BLOCKED}.168.8.255
    • {BLOCKED}.168.9.0 up to {BLOCKED}.168.9.255
    • {BLOCKED}.168.10.0 up to {BLOCKED}.168.10.255
    • {BLOCKED}.168.11.0 up to {BLOCKED}.168.11.255
    • {BLOCKED}.168.12.0 up to BLOCKED}.168.12.255
  • It searches and gather data found in the following files:
    • C:\1f.txt
    • C:\1i.txt
    • C:\1p.txt
    • C:\Windows\1f.txt
    • C:\Windows\1i.txt
    • C:\Windows\1p.txt
    • D:\1f.txt
    • D:\1i.txt
    • D:\1p.txt
    • E:\1f.txt
    • E:\1i.txt
    • E:\1p.txt

  SOLUTION

Minimum Scan Engine: 9.800
FIRST VSAPI PATTERN FILE: 16.418.01
FIRST VSAPI PATTERN DATE: 16 Dec 2020
VSAPI OPR PATTERN File: 16.419.00
VSAPI OPR PATTERN Date: 17 Dec 2020

Step 1

Trend Micro Predictive Machine Learning detects and blocks malware at the first sign of its existence, before it executes on your system. When enabled, your Trend Micro product detects this malware under the following machine learning name:

     
    • Troj.Win32.TRX.XXPE50FFF038

Step 2

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 3

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 4

Restart in Safe Mode

[ Learn More ]

Step 5

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\Classes\SHTinfo
    • sha1 = {Malware Defined Values}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\SHTinfo
    • notice = {Malware Defined Values}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\SHTinfo
    • tunnel = {Malware Defined Values}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\SHTinfo
    • peer = {Hex Values}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\SHTinfo
    • intranet = {Hex Values}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\SHTinfo
    • comment = {Hex Values}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\SHTinfo
    • forward = {Hex Values}

Step 6

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\Classes\SHTinfo

Step 7

Search and delete this file

[ Learn More ]
There may be some files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • %Windows%\Fonts\clientdb\ds \{Random Numbers}
  • %Windows%\Fonts\clientdb\gt \{Random Numbers}
  • %Windows%\Fonts\Swil\pro_logs
  • %System%\LogFiles\rubescurity.exe
  • %System%\LogFiles\normaliz.dll
  • %System%\LogFiles\miscoboeh.exe

Step 8

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%\Fonts\clientdb
  • %Windows%\Fonts\clientdb\ds
  • %Windows%\Fonts\clientdb\gt
  • %Windows%\Fonts\Swil

Step 9

Scan your computer with your Trend Micro product to delete files detected as Trojan.Win32.VICERCON.D. 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.