Trojan.Win32.EQUATED.LZCWY

November 08, 2019
 Analysis by: Arvin Roi Macaraeg
 ALIASES:

a variant of Win32/Packed.VMProtect.ABD trojan(NOD32); HEUR:Trojan.Win32.Generic(KASPERSKY)

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

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:

2,738,688 bytes

File Type:

Other

Memory Resident:

Yes

Initial Samples Received Date:

06 Nov 2019

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 files:

  • %Windows%\sysupdate.log
  • %Windows%\winupdate32.log
  • %System Root%\Config.Msi\b5055.rbs
  • %Windows%\Installer\b5054.ipi
  • %Windows%\Installer\b5051.msi

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

It adds the following processes:

  • "%System%\netsh.exe" interface ipv6 install
  • "%System%\netsh.exe" ipsec static add policy name=qianye
  • "%System%\netsh.exe" ipsec static add filterlist name=Filter1
  • "%System%\netsh.exe" ipsec static add filter filterlist=Filter1 srcaddr=any dstaddr=Me dstport=445 protocol=TCP
  • "%System%\netsh.exe" ipsec static add filter filterlist=Filter1 srcaddr=any dstaddr=Me dstport=135 protocol=TCP
  • "%System%\netsh.exe" ipsec static add filter filterlist=Filter1 srcaddr=any dstaddr=Me dstport=139 protocol=TCP
  • "%System%\netsh.exe" ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=21 protocol=TCP
  • "%System%\netsh.exe" ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=2222 protocol=TCP
  • "%System%\netsh.exe" ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=3333 protocol=TCP
  • "%System%\netsh.exe" ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=4444 protocol=TCP
  • "%System%\netsh.exe" ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=5555 protocol=TCP
  • "%System%\netsh.exe" ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=6666 protocol=TCP
  • "%System%\netsh.exe" ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=7777 protocol=TCP
  • "%System%\netsh.exe" ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=8443 protocol=TCP
  • "%System%\netsh.exe" ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=8888 protocol=TCP
  • "%System%\netsh.exe" ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=9000 protocol=TCP
  • "%System%\netsh.exe" ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=9999 protocol=TCP
  • "%System%\netsh.exe" ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=14443 protocol=TCP
  • "%System%\netsh.exe" ipsec static add filter filterlist=Filter1 srcaddr=Me dstaddr=any dstport=14444 protocol=TCP
  • "%System%\netsh.exe" ipsec static add filteraction name=FilteraAtion1 action=block
  • "%System%\netsh.exe" ipsec static add rule name=Rule1 policy=qianye filterlist=Filter1 filteraction=FilteraAtion1
  • "%System%\netsh.exe" ipsec static set policy name=qianye assign=y

(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 as part of its installation routine:

HKEY_LOCAL_MACHINE\SOFTWARE\SoundResearch
UpdaterLastTimeChecked1 = 1

It modifies the following registry entries:

HKEY_CURRENT_USER\Software\Policies\
Microsoft\Windows Defender
DisableAntiSpyware = 1

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

15.480.08

FIRST VSAPI PATTERN DATE:

07 Nov 2019

VSAPI OPR PATTERN File:

15.481.00

VSAPI OPR PATTERN Date:

08 Nov 2019

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

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 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\SoundResearch
    • UpdaterLastTimeChecked1 = 1

Step 4

Restore this modified 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\Policies\Microsoft\Windows Defender
    • From: DisableAntiSpyware = 1
      To: DisableAntiSpyware = 0

Step 5

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%\sysupdate.log
  • %Windows%\winupdate32.log
  • %System Root%\Config.Msi\b5055.rbs
  • %Windows%\Installer\b5054.ipi
  • %Windows%\Installer\b5051.msi

Step 6

Scan your computer with your Trend Micro product to delete files detected as Trojan.Win32.EQUATED.LZCWY. 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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