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Trojan.Win32.VICERCON.C

July 26, 2020
 Analysis by: Mc Justine De Guzman
 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, 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.

  TECHNICAL DETAILS

File Size:

909,164 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

22 Jul 2020

Payload:

Drops files, 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.

Installation

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

  • %System%\{String Name}.exe - where String Name can be any of the following:
    • about
    • account
    • activities
    • administration
    • advertised
    • along
    • always
    • always
    • areas
    • around
    • attend
    • because
    • become
    • besides
    • both
    • capacity
    • ceremony
    • change
    • cloud
    • collecting
    • command
    • compromised
    • computer
    • constructive
    • consultants
    • cooperation
    • coverage
    • crime
    • crowded
    • cultural
    • culture
    • development
    • development
    • digital
    • disable
    • disaster
    • Dongpo
    • during
    • energy
    • ensure
    • escalated
    • even
    • Even
    • event
    • Falcon
    • Falcon
    • featuring
    • festivals
    • figure
    • financial
    • firewalls
    • First
    • first
    • former
    • forum
    • found
    • from
    • gotten
    • governments
    • historical
    • hotbed
    • imagine
    • improve
    • inadequate
    • information
    • innovation
    • installed
    • international
    • learn
    • legendary
    • line
    • machine
    • management
    • manager
    • may
    • Meanwhile
    • memorial
    • more
    • needtemporarily
    • neglect
    • notice
    • obvious
    • often
    • often
    • opening
    • opening
    • past
    • people
    • performances
    • poverty
    • pretty
    • prevention
    • product
    • products
    • programs
    • proper
    • provided
    • quality
    • quickly
    • realize
    • recently
    • recorded
    • related
    • residence
    • response
    • result
    • routes
    • running
    • sanitation
    • scenario
    • scientific
    • Sensor
    • sensor
    • services
    • silently
    • sites
    • skeptical
    • Slums
    • slums
    • special
    • strengthening
    • such
    • suffer
    • suggestions
    • sure
    • sustainable
    • technological
    • temple
    • there
    • those
    • thought
    • through
    • tintr
    • tools
    • tourist
    • transformation
    • turn
    • turned
    • turning
    • uninstall
    • uninstall
    • unwilling
    • visit
    • watch
    • when
    • which
    • your
    • yourself

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

It drops the following files:

  • %System%\wostmp\{random numbers} - copy of original malware
  • %System%\LogFiles\eguipshosts.exe -> Coinminer.Win32.MALXMR.TDQ
  • %System%\LogFiles\normaliz.dll
  • %System%\LogFiles\lgouvms.exe -> TROJ_GEN.R002C0WER20 or Coinminer.Win64.TOOLXMR.CJD (if ran in 64 bit environment)

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

It creates the following folders:

  • %System%\wostmp\

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

Autostart Technique

This Trojan adds and runs the following services:

  • {random characters} - to execute %System%\{String Name}.exe

(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_CLASSES_ROOT\SHTInfo
comment = {Hex Values}

HKEY_CURRENT_ROOT\SHTInfo
intranet = {Hex Values}

HKEY_CURRENT_ROOT\SHTInfo
notice = {Hex Values}

HKEY_CURRENT_ROOT\SHTInfo
peer = {Hex Values}

HKEY_CURRENT_ROOT\SHTInfo
staticpeer = {Malware Defined Values}

HKEY_CURRENT_ROOT\SHTInfo
tunnel = {Malware Defined Values}

HKEY_CURRENT_ROOT\SHTInfo
sha1 = {Malware Defined Values}

Other Details

This Trojan adds the following registry keys:

HKEY_CLASSES_ROOT
SHTinfo =

It does the following:

  • It uses the following uncommon ports:
    • 27930
    • 65360
  • It sends UDP packets to any of the following IP addresses within the network range:
    • {BLOCKED}.{BLOCKED}.248.1 up to {BLOCKED}.{BLOCKED}.248.255
    • {BLOCKED}.{BLOCKED}.120.0 up to {BLOCKED}.{BLOCKED}.150.255
    • {BLOCKED}.{BLOCKED}.139.1 up to {BLOCKED}.{BLOCKED}.139.255
    • {BLOCKED}.{BLOCKED}.19.0 up to {BLOCKED}.{BLOCKED}.19.255
    • {BLOCKED}.{BLOCKED}.210.0 up to {BLOCKED}.{BLOCKED}.250.255
    • {BLOCKED}.{BLOCKED}.80.0 up to {BLOCKED}.{BLOCKED}.97.255
    • {BLOCKED}.{BLOCKED}.40.0 up to {BLOCKED}.{BLOCKED}.60.255
    • {BLOCKED}.{BLOCKED}.130.0 up to {BLOCKED}.{BLOCKED}.165.255
    • {BLOCKED}.{BLOCKED}.180.0 up to {BLOCKED}.{BLOCKED}.210.255
    • {BLOCKED}.{BLOCKED}.211.0 up to {BLOCKED}.{BLOCKED}.240.255
    • {BLOCKED}.{BLOCKED}.85.0 up to {BLOCKED}.{BLOCKED}.100.255
    • {BLOCKED}.{BLOCKED}.184.1 up to {BLOCKED}.{BLOCKED}.184.255
    • {BLOCKED}.{BLOCKED}.27.0 up to {BLOCKED}.{BLOCKED}.27.255
    • {BLOCKED}.{BLOCKED}.203.1 up to {BLOCKED}.{BLOCKED}.203.255
    • {BLOCKED}.{BLOCKED}.128.1 up to {BLOCKED}.{BLOCKED}.128.255
    • {BLOCKED}.{BLOCKED}.70.0 up to {BLOCKED}.{BLOCKED}.85.255
    • {BLOCKED}.{BLOCKED}.180.0 up to {BLOCKED}.{BLOCKED}.200.255
    • {BLOCKED}.{BLOCKED}.140.0 up to {BLOCKED}.{BLOCKED}.165.255
    • {BLOCKED}.{BLOCKED}.100.1 up to {BLOCKED}.{BLOCKED}.100.255
    • {BLOCKED}.{BLOCKED}.90.0 up to {BLOCKED}.{BLOCKED}.110.255
    • {BLOCKED}.{BLOCKED}.17.1 up to {BLOCKED}.{BLOCKED}.17.255
    • {BLOCKED}.{BLOCKED}.231.1 up to {BLOCKED}.{BLOCKED}.231.255
    • {BLOCKED}.{BLOCKED}.145.0 up to {BLOCKED}.{BLOCKED}.175.255
    • {BLOCKED}.{BLOCKED}.166.1 up to {BLOCKED}.{BLOCKED}.166.255
    • {BLOCKED}.{BLOCKED}.60.0 up to {BLOCKED}.{BLOCKED}.70.255
    • {BLOCKED}.{BLOCKED}.51.1 up to {BLOCKED}.{BLOCKED}.51.255
    • {BLOCKED}.{BLOCKED}.220.0 up to {BLOCKED}.{BLOCKED}.245.255
    • {BLOCKED}.{BLOCKED}.15.1 up to {BLOCKED}.{BLOCKED}.15.255
    • {BLOCKED}.{BLOCKED}.185.0 up to {BLOCKED}.{BLOCKED}.200.255
    • {BLOCKED}.{BLOCKED}.145.1 up to {BLOCKED}.{BLOCKED}.145.255
    • {BLOCKED}.{BLOCKED}.252.0 up to {BLOCKED}.{BLOCKED}.252.255
    • {BLOCKED}.{BLOCKED}.1.0 up to {BLOCKED}.{BLOCKED}.20.255
    • {BLOCKED}.{BLOCKED}.79.0 up to {BLOCKED}.{BLOCKED}.79.255
    • {BLOCKED}.{BLOCKED}.230.0 up to {BLOCKED}.{BLOCKED}.255.255
    • {BLOCKED}.{BLOCKED}.140.0 up to {BLOCKED}.{BLOCKED}.140.255
    • {BLOCKED}.{BLOCKED}.210.0 up to {BLOCKED}.{BLOCKED}.240.255
    • {BLOCKED}.{BLOCKED}.33.1 up to {BLOCKED}.{BLOCKED}.33.255
    • {BLOCKED}.{BLOCKED}.150.0 up to {BLOCKED}.{BLOCKED}.175.255
    • {BLOCKED}.{BLOCKED}.123.1 up to {BLOCKED}.{BLOCKED}.123.255
    • {BLOCKED}.{BLOCKED}.75.0 up to {BLOCKED}.{BLOCKED}.90.255
    • {BLOCKED}.{BLOCKED}.83.1 up to {BLOCKED}.{BLOCKED}.83.255
    • {BLOCKED}.{BLOCKED}.58.1 up to {BLOCKED}.{BLOCKED}.58.255
    • {BLOCKED}.{BLOCKED}.1.0 up to {BLOCKED}.{BLOCKED}.15.255
    • {BLOCKED}.{BLOCKED}.6.1 up to {BLOCKED}.{BLOCKED}.6.255
    • {BLOCKED}.{BLOCKED}.145.0 up to {BLOCKED}.{BLOCKED}.160.255
    • {BLOCKED}.{BLOCKED}.213.1 up to {BLOCKED}.{BLOCKED}.213.255
    • {BLOCKED}.{BLOCKED}.230.0 up to {BLOCKED}.{BLOCKED}.255.255
    • {BLOCKED}.{BLOCKED}.25.0 up to {BLOCKED}.{BLOCKED}.55.255
    • {BLOCKED}.{BLOCKED}.1.0 up to {BLOCKED}.{BLOCKED}.25.255
    • {BLOCKED}.{BLOCKED}.90.0 up to {BLOCKED}.{BLOCKED}.115.255
    • {BLOCKED}.{BLOCKED}.165.0 up to {BLOCKED}.{BLOCKED}.185.255
    • {BLOCKED}.{BLOCKED}.35.0 up to {BLOCKED}.{BLOCKED}.75.255
    • {BLOCKED}.{BLOCKED}.236.0 up to {BLOCKED}.{BLOCKED}.245.255
    • {BLOCKED}.{BLOCKED}.85.0 up to {BLOCKED}.{BLOCKED}.115.255
    • {BLOCKED}.{BLOCKED}.33.1 up to {BLOCKED}.{BLOCKED}.33.255
    • {BLOCKED}.{BLOCKED}.189.1 up to {BLOCKED}.{BLOCKED}.189.255
    • {BLOCKED}.{BLOCKED}.50.0 up to {BLOCKED}.{BLOCKED}.80.255
    • {BLOCKED}.{BLOCKED}.189.1 up to {BLOCKED}.{BLOCKED}.189.255
    • {BLOCKED}.{BLOCKED}.125.1 up to {BLOCKED}.{BLOCKED}.125.255
    • {BLOCKED}.{BLOCKED}.10.0 up to {BLOCKED}.{BLOCKED}.30.255
    • {BLOCKED}.{BLOCKED}.121.1 up to {BLOCKED}.{BLOCKED}.121.255
    • {BLOCKED}.{BLOCKED}.230.0 up to {BLOCKED}.{BLOCKED}.255.255
    • {BLOCKED}.{BLOCKED}.91.0 up to {BLOCKED}.{BLOCKED}.91.255
    • {BLOCKED}.{BLOCKED}.155.0 up to {BLOCKED}.{BLOCKED}.175.255
    • {BLOCKED}.{BLOCKED}.168.1 up to {BLOCKED}.{BLOCKED}.168.255
    • {BLOCKED}.{BLOCKED}.131.1 up to {BLOCKED}.{BLOCKED}.131.255
    • {BLOCKED}.{BLOCKED}.194.1 up to {BLOCKED}.{BLOCKED}.194.255
    • {BLOCKED}.{BLOCKED}.85.0 up to {BLOCKED}.{BLOCKED}.105.255
    • {BLOCKED}.{BLOCKED}.93.1 up to {BLOCKED}.{BLOCKED}.93.255
    • {BLOCKED}.{BLOCKED}.44.0 up to {BLOCKED}.{BLOCKED}.44.255
    • {BLOCKED}.{BLOCKED}.110.0 up to {BLOCKED}.{BLOCKED}.130.255
    • {BLOCKED}.{BLOCKED}.112.1 up to {BLOCKED}.{BLOCKED}.112.255
    • {BLOCKED}.{BLOCKED}.155.0 up to {BLOCKED}.{BLOCKED}.180.255
    • {BLOCKED}.{BLOCKED}.218.1 up to {BLOCKED}.{BLOCKED}.218.255
    • {BLOCKED}.{BLOCKED}.62.0 up to {BLOCKED}.{BLOCKED}.62.255
    • {BLOCKED}.{BLOCKED}.155.0 up to {BLOCKED}.{BLOCKED}.180.255
    • {BLOCKED}.{BLOCKED}.152.0 up to {BLOCKED}.{BLOCKED}.175.255
    • {BLOCKED}.{BLOCKED}.152.1 up to {BLOCKED}.{BLOCKED}.152.255
    • {BLOCKED}.{BLOCKED}.67.0 up to {BLOCKED}.{BLOCKED}.67.255
    • {BLOCKED}.{BLOCKED}.203.0 up to {BLOCKED}.{BLOCKED}.203.255
    • {BLOCKED}.{BLOCKED}.1.0 up to {BLOCKED}.{BLOCKED}.25.255
    • {BLOCKED}.{BLOCKED}.12.1 up to {BLOCKED}.{BLOCKED}.12.255
    • {BLOCKED}.{BLOCKED}.128.1 up to {BLOCKED}.{BLOCKED}.128.255
    • {BLOCKED}.{BLOCKED}.210.0 up to {BLOCKED}.{BLOCKED}.245.255
    • {BLOCKED}.{BLOCKED}.220.0 up to {BLOCKED}.{BLOCKED}.255.255
    • {BLOCKED}.{BLOCKED}.25.0 up to {BLOCKED}.{BLOCKED}.50.255
    • {BLOCKED}.{BLOCKED}.127.1 up to {BLOCKED}.{BLOCKED}.127.255
    • {BLOCKED}.{BLOCKED}.40.0 up to {BLOCKED}.{BLOCKED}.70.255
    • {BLOCKED}.{BLOCKED}.36.0 up to {BLOCKED}.{BLOCKED}.36.255
    • {BLOCKED}.{BLOCKED}.0.1 up to {BLOCKED}.{BLOCKED}.0.255
    • {BLOCKED}.{BLOCKED}.239.1 up to {BLOCKED}.{BLOCKED}.239.255
    • {BLOCKED}.{BLOCKED}.31.1 up to {BLOCKED}.{BLOCKED}.31.255
    • {BLOCKED}.{BLOCKED}.45.0 up to {BLOCKED}.{BLOCKED}.65.255
    • {BLOCKED}.{BLOCKED}.56.1 up to {BLOCKED}.{BLOCKED}.56.255
    • {BLOCKED}.{BLOCKED}.25.0 up to {BLOCKED}.{BLOCKED}.50.255
    • {BLOCKED}.{BLOCKED}.95.0 up to {BLOCKED}.{BLOCKED}.95.255
    • {BLOCKED}.{BLOCKED}.16.1 up to {BLOCKED}.{BLOCKED}.16.255
    • {BLOCKED}.{BLOCKED}.168.1 up to {BLOCKED}.{BLOCKED}.168.255
    • {BLOCKED}.{BLOCKED}.190.0 up to {BLOCKED}.{BLOCKED}.200.255
    • {BLOCKED}.{BLOCKED}.1.0 up to {BLOCKED}.{BLOCKED}.26.255
    • {BLOCKED}.{BLOCKED}.4.1 up to {BLOCKED}.{BLOCKED}.4.255
    • {BLOCKED}.{BLOCKED}.245.1 up to {BLOCKED}.{BLOCKED}.246.255
    • {BLOCKED}.{BLOCKED}.37.1 up to {BLOCKED}.{BLOCKED}.37.255
    • {BLOCKED}.{BLOCKED}.195.0 up to {BLOCKED}.{BLOCKED}.195.255
    • {BLOCKED}.{BLOCKED}.202.1 up to {BLOCKED}.{BLOCKED}.202.255
    • {BLOCKED}.{BLOCKED}.140.0 up to {BLOCKED}.{BLOCKED}.165.255
    • {BLOCKED}.{BLOCKED}.33.0 up to {BLOCKED}.{BLOCKED}.33.255
    • {BLOCKED}.{BLOCKED}.93.1 up to {BLOCKED}.{BLOCKED}.93.255
    • {BLOCKED}.{BLOCKED}.60.0 up to {BLOCKED}.{BLOCKED}.90.255
    • {BLOCKED}.{BLOCKED}.186.1 up to {BLOCKED}.{BLOCKED}.186.255
    • {BLOCKED}.{BLOCKED}.81.1 up to {BLOCKED}.{BLOCKED}.81.255
    • {BLOCKED}.{BLOCKED}.21.1 up to {BLOCKED}.{BLOCKED}.21.255
    • {BLOCKED}.{BLOCKED}.90.0 up to {BLOCKED}.{BLOCKED}.115.255
    • {BLOCKED}.{BLOCKED}.39.1 up to {BLOCKED}.{BLOCKED}.39.255
    • {BLOCKED}.{BLOCKED}.85.0 up to {BLOCKED}.{BLOCKED}.120.255
    • {BLOCKED}.{BLOCKED}.60.0 up to {BLOCKED}.{BLOCKED}.85.255
    • {BLOCKED}.{BLOCKED}.73.1 up to {BLOCKED}.{BLOCKED}.73.255
    • {BLOCKED}.{BLOCKED}.5.0 up to {BLOCKED}.{BLOCKED}.15.255
    • {BLOCKED}.{BLOCKED}.50.0 up to {BLOCKED}.{BLOCKED}.60.255
    • {BLOCKED}.{BLOCKED}.20.0 up to {BLOCKED}.{BLOCKED}.38.255
    • {BLOCKED}.{BLOCKED}.170.0 up to {BLOCKED}.{BLOCKED}.180.255
    • {BLOCKED}.{BLOCKED}.65.0 up to {BLOCKED}.{BLOCKED}.75.255
    • {BLOCKED}.{BLOCKED}.252.0 up to {BLOCKED}.{BLOCKED}.255.255
    • {BLOCKED}.{BLOCKED}.150.0 up to {BLOCKED}.{BLOCKED}.165.255
    • {BLOCKED}.{BLOCKED}.50.0 up to {BLOCKED}.{BLOCKED}.60.255
    • {BLOCKED}.{BLOCKED}.100.0 up to {BLOCKED}.{BLOCKED}.110.255
    • {BLOCKED}.{BLOCKED}.30.1 up to {BLOCKED}.{BLOCKED}.30.255
    • {BLOCKED}.{BLOCKED}.109.1 up to {BLOCKED}.{BLOCKED}.109.255
    • {BLOCKED}.{BLOCKED}.140.0 up to {BLOCKED}.{BLOCKED}.165.255
    • {BLOCKED}.{BLOCKED}.150.0 up to {BLOCKED}.{BLOCKED}.175.255
    • {BLOCKED}.{BLOCKED}.201.1 up to {BLOCKED}.{BLOCKED}.201.255
    • {BLOCKED}.{BLOCKED}.5.0 up to {BLOCKED}.{BLOCKED}.15.255
    • {BLOCKED}.{BLOCKED}.40.0 up to {BLOCKED}.{BLOCKED}.65.255
    • {BLOCKED}.{BLOCKED}.104.0 up to {BLOCKED}.{BLOCKED}.104.255
    • {BLOCKED}.{BLOCKED}.6.1 up to {BLOCKED}.{BLOCKED}.6.255
    • {BLOCKED}.{BLOCKED}140.0 up to {BLOCKED}.{BLOCKED}.165.255
    • {BLOCKED}.{BLOCKED}.27.1 up to {BLOCKED}.{BLOCKED}.27.255
    • {BLOCKED}.{BLOCKED}.185.0 up to {BLOCKED}.{BLOCKED}.210.255
    • {BLOCKED}.{BLOCKED}.98.0 up to {BLOCKED}.{BLOCKED}.98.255
    • {BLOCKED}.{BLOCKED}.99.0 up to {BLOCKED}.{BLOCKED}.99.255
    • {BLOCKED}.{BLOCKED}.230.0 up to {BLOCKED}.{BLOCKED}.255.255
    • {BLOCKED}.{BLOCKED}.200.0 up to {BLOCKED}.{BLOCKED}.225.255
    • {BLOCKED}.{BLOCKED}.185.0 up to {BLOCKED}.{BLOCKED}.200.255
    • {BLOCKED}.{BLOCKED}.15.0 up to {BLOCKED}.{BLOCKED}.15.255
    • {BLOCKED}.{BLOCKED}.190.0 up to {BLOCKED}.{BLOCKED}.255.255
    • {BLOCKED}.{BLOCKED}.32.0 up to {BLOCKED}.{BLOCKED}.32.255
  • 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:

9.850

FIRST VSAPI PATTERN FILE:

16.122.07

FIRST VSAPI PATTERN DATE:

24 Jul 2020

VSAPI OPR PATTERN File:

16.123.00

VSAPI OPR PATTERN Date:

25 Jul 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.XXPE50FFF036

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

Disable this malware service

[ Learn More ]
  • {Random 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_CLASSES_ROOT
    • 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.
  • %System%\wostmp\{random numbers}
  • %System%\LogFiles\lgouvms.exe
  • System%\LogFiles\eguipshosts.exe
  • %System%\LogFiles\normaliz.dll

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. %System%\wostmp\

Step 9

Restart in normal mode and scan your computer with your Trend Micro product for files detected as Trojan.Win32.VICERCON.C. 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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