Analysis by: John Rainier Navato
 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • 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: 129818516 bytes
File Type: EXE
Initial Samples Received Date: 04 Aug 2025
Payload: Creates files, Modifies system registry, Drops files

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:

  • %Desktop%\Line.lnk
  • %Desktop%\Line.pif
  • %Desktop%\Line.url
  • %Program Files%\client-xml\setup-i\is-{Random}.tmp
  • %Program Files%\client-xml\setup-i\LineInts.exe
  • %Program Files%\client-xml\stable-no\4m\cFxgFIabIQ.Ua
  • %Program Files%\client-xml\stable-no\4m\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\4Xi\Aqe4gQso4Zmgfyay.RYn
  • %Program Files%\client-xml\stable-no\4Xi\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\5imc\FuCdU6ifp6E.YfSzx
  • %Program Files%\client-xml\stable-no\5imc\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\5pjy\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\5pjy\Q6aZFBYAhU0G.rcp
  • %Program Files%\client-xml\stable-no\9yRGL\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\9yRGL\lOGU5i6IapY.hi
  • %Program Files%\client-xml\stable-no\Aj\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\Aj\lTbsHyaqLgL5em2.eNDy
  • %Program Files%\client-xml\stable-no\Ax3U\BZrpNKfTlinDb.tg8
  • %Program Files%\client-xml\stable-no\Ax3U\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\C5d\Cqihg6wA4QVT3I.NpXd5
  • %Program Files%\client-xml\stable-no\C5d\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\D3\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\D3\ugiFxWEty.pEdV
  • %Program Files%\client-xml\stable-no\dK\7LYSnfHZLTckY.SdvG1
  • %Program Files%\client-xml\stable-no\dK\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\gD\hRxdt7LvP.HFD
  • %Program Files%\client-xml\stable-no\gD\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\gF3Td\23phl5FOG1uDbk.Z2Y4l
  • %Program Files%\client-xml\stable-no\gF3Td\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\hcM\IJjLF6R0.wt
  • %Program Files%\client-xml\stable-no\hcM\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\ihscG.dll
  • %Program Files%\client-xml\stable-no\iM\1KJMEr1uU.vj
  • %Program Files%\client-xml\stable-no\iM\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\LzC2\8LFZnt2okV.3twK
  • %Program Files%\client-xml\stable-no\LzC2\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\Mc5\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\Mc5\Z4xZbxh4A8WxoLqz.PDaN
  • %Program Files%\client-xml\stable-no\MFFw\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\MFFw\unbtvbYk81XCYI.Cdwb
  • %Program Files%\client-xml\stable-no\NHp8\a9BNMfGj.o7w1
  • %Program Files%\client-xml\stable-no\NHp8\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\or\f308RlEFzeQ88.XvfP
  • %Program Files%\client-xml\stable-no\or\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\qjWRthy9.j
  • %Program Files%\client-xml\stable-no\RIAcHgVWksT.exe
  • %Program Files%\client-xml\stable-no\TTckn\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\TTckn\oNSsm0xnP86IC.UO6Tl
  • %Program Files%\client-xml\stable-no\Wm19\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\Wm19\uAT3hP2mcJ76myg.8y
  • %Program Files%\client-xml\stable-no\xbq\eybXP8qYIOXvhS1L.SjQ30
  • %Program Files%\client-xml\stable-no\xbq\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\zJK2b\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\zJK2b\LR7PtxjA8XVqTT.imPMd
  • %User Temp%\is-{Random 1}.tmp\{Malware File Name}.tmp

(Note: %Desktop% is the current user's desktop, which is usually C:\Documents and Settings\{User Name}\Desktop on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\Desktop on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000(32-bit), Server 2003(32-bit), XP, Vista(64-bit), 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit) , or C:\Program Files (x86) in Windows XP(64-bit), Vista(64-bit), 7(64-bit), 8(64-bit), 8.1(64-bit), 2008(64-bit), 2012(64-bit) and 10(64-bit).. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

It adds the following processes:

  • %User Temp%\is-{Random 1}.tmp\{Malware File Name}.tmp /SL5="${Random},{Random},{Random},{Malware File Path}\{Malware File Name}.{Malware File Extension}"
  • %Program Files%\client-xml\stable-no\RIAcHgVWksT.exe"

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000(32-bit), Server 2003(32-bit), XP, Vista(64-bit), 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit) , or C:\Program Files (x86) in Windows XP(64-bit), Vista(64-bit), 7(64-bit), 8(64-bit), 8.1(64-bit), 2008(64-bit), 2012(64-bit) and 10(64-bit).)

It creates the following folders:

  • %User Temp%\is-{Random 1}.tmp
  • %User Temp%\is-{Random 2}.tmp
  • %User Temp%\is-{Random 2}.tmp\_isetup
  • %Program Files%\client-xml
  • %Program Files%\client-xml\setup-i
  • %Program Files%\client-xml\stable-no
  • %Program Files%\client-xml\stable-no\4m
  • %Program Files%\client-xml\stable-no\4Xi
  • %Program Files%\client-xml\stable-no\5imc
  • %Program Files%\client-xml\stable-no\5pjy
  • %Program Files%\client-xml\stable-no\9yRGL
  • %Program Files%\client-xml\stable-no\Aj
  • %Program Files%\client-xml\stable-no\Ax3U
  • %Program Files%\client-xml\stable-no\C5d
  • %Program Files%\client-xml\stable-no\D3
  • %Program Files%\client-xml\stable-no\dK
  • %Program Files%\client-xml\stable-no\gD
  • %Program Files%\client-xml\stable-no\gF3Td
  • %Program Files%\client-xml\stable-no\hcM
  • %Program Files%\client-xml\stable-no\iM
  • %Program Files%\client-xml\stable-no\LzC2
  • %Program Files%\client-xml\stable-no\Mc5
  • %Program Files%\client-xml\stable-no\MFFw
  • %Program Files%\client-xml\stable-no\NHp8
  • %Program Files%\client-xml\stable-no\or
  • %Program Files%\client-xml\stable-no\TTckn
  • %Program Files%\client-xml\stable-no\Wm19
  • %Program Files%\client-xml\stable-no\xbq
  • %Program Files%\client-xml\stable-no\zJK2b

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000(32-bit), Server 2003(32-bit), XP, Vista(64-bit), 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit) , or C:\Program Files (x86) in Windows XP(64-bit), Vista(64-bit), 7(64-bit), 8(64-bit), 8.1(64-bit), 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Other System Modifications

This Trojan adds the following registry entries as part of its installation routine:

HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000
Owner = {Random Hex Values}

HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000
SessionHash = {Random Hex Values}

HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000
Sequence = 1

HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000
RegFiles000 = %Program Files%\client-xml\setup-i\LineInts.exe, %Program Files%\client-xml\stable-no\ihscG.dll, %Program Files%\client-xml\stable-no\RIAcHgVWksT.exe

HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000
RegFilesHash = {Random Hex Values}

It adds the following registry keys as part of its installation routine:

HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000

  SOLUTION

Minimum Scan Engine: 9.800
FIRST VSAPI PATTERN FILE: 20.366.04
FIRST VSAPI PATTERN DATE: 01 Aug 2025
VSAPI OPR PATTERN File: 20.367.00
VSAPI OPR PATTERN Date: 02 Aug 2025

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_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
    • Owner = {Random Hex Values}
  • In HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
    • SessionHash = {Random Hex Values}
  • In HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
    • Sequence = 1
  • In HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
    • RegFiles0000 = %Program Files%\client-xml\setup-i\LineInts.exe, %Program Files%\client-xml\stable-no\ihscG.dll, %Program Files%\client-xml\stable-no\RIAcHgVWksT.exe
  • In HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
    • RegFilesHash = {Random Hex Values}

Step 4

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. Before you could do this, you must restart in Safe Mode. For instructions on how to do this, you may refer to this page If the preceding step requires you to restart in safe mode, you may proceed to edit the system registry.

  • In HKEY_CURRENT_USER\Software\Microsoft\RestartManager
    • Session0000

Step 5

Search and delete these files

[ 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.
  • %Desktop%\Line.lnk
  • %Desktop%\Line.pif
  • %Desktop%\Line.url
  • %Program Files%\client-xml\setup-i\is-{Random}.tmp
  • %Program Files%\client-xml\setup-i\LineInts.exe
  • %Program Files%\client-xml\stable-no\4m\cFxgFIabIQ.Ua
  • %Program Files%\client-xml\stable-no\4m\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\4Xi\Aqe4gQso4Zmgfyay.RYn
  • %Program Files%\client-xml\stable-no\4Xi\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\5imc\FuCdU6ifp6E.YfSzx
  • %Program Files%\client-xml\stable-no\5imc\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\5pjy\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\5pjy\Q6aZFBYAhU0G.rcp
  • %Program Files%\client-xml\stable-no\9yRGL\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\9yRGL\lOGU5i6IapY.hi
  • %Program Files%\client-xml\stable-no\Aj\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\Aj\lTbsHyaqLgL5em2.eNDy
  • %Program Files%\client-xml\stable-no\Ax3U\BZrpNKfTlinDb.tg8
  • %Program Files%\client-xml\stable-no\Ax3U\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\C5d\Cqihg6wA4QVT3I.NpXd5
  • %Program Files%\client-xml\stable-no\C5d\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\D3\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\D3\ugiFxWEty.pEdV
  • %Program Files%\client-xml\stable-no\dK\7LYSnfHZLTckY.SdvG1
  • %Program Files%\client-xml\stable-no\dK\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\gD\hRxdt7LvP.HFD
  • %Program Files%\client-xml\stable-no\gD\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\gF3Td\23phl5FOG1uDbk.Z2Y4l
  • %Program Files%\client-xml\stable-no\gF3Td\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\hcM\IJjLF6R0.wt
  • %Program Files%\client-xml\stable-no\hcM\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\ihscG.dll
  • %Program Files%\client-xml\stable-no\iM\1KJMEr1uU.vj
  • %Program Files%\client-xml\stable-no\iM\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\LzC2\8LFZnt2okV.3twK
  • %Program Files%\client-xml\stable-no\LzC2\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\Mc5\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\Mc5\Z4xZbxh4A8WxoLqz.PDaN
  • %Program Files%\client-xml\stable-no\MFFw\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\MFFw\unbtvbYk81XCYI.Cdwb
  • %Program Files%\client-xml\stable-no\NHp8\a9BNMfGj.o7w1
  • %Program Files%\client-xml\stable-no\NHp8\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\or\f308RlEFzeQ88.XvfP
  • %Program Files%\client-xml\stable-no\or\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\qjWRthy9.j
  • %Program Files%\client-xml\stable-no\RIAcHgVWksT.exe
  • %Program Files%\client-xml\stable-no\TTckn\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\TTckn\oNSsm0xnP86IC.UO6Tl
  • %Program Files%\client-xml\stable-no\Wm19\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\Wm19\uAT3hP2mcJ76myg.8y
  • %Program Files%\client-xml\stable-no\xbq\eybXP8qYIOXvhS1L.SjQ30
  • %Program Files%\client-xml\stable-no\xbq\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\zJK2b\is-{Random}.tmp
  • %Program Files%\client-xml\stable-no\zJK2b\LR7PtxjA8XVqTT.imPMd
  • %User Temp%\is-{Random 1}.tmp\{Malware File Name}.tmp

Step 6

Search and delete these folders

[ 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.
  • %Program Files%\client-xml\stable-no\4m
  • %Program Files%\client-xml\stable-no\4Xi
  • %Program Files%\client-xml\stable-no\5imc
  • %Program Files%\client-xml\stable-no\5pjy
  • %Program Files%\client-xml\stable-no\9yRGL
  • %Program Files%\client-xml\stable-no\Aj
  • %Program Files%\client-xml\stable-no\Ax3U
  • %Program Files%\client-xml\stable-no\C5d
  • %Program Files%\client-xml\stable-no\D3
  • %Program Files%\client-xml\stable-no\dK
  • %Program Files%\client-xml\stable-no\gD
  • %Program Files%\client-xml\stable-no\gF3Td
  • %Program Files%\client-xml\stable-no\hcM
  • %Program Files%\client-xml\stable-no\iM
  • %Program Files%\client-xml\stable-no\LzC2
  • %Program Files%\client-xml\stable-no\Mc5
  • %Program Files%\client-xml\stable-no\MFFw
  • %Program Files%\client-xml\stable-no\NHp8
  • %Program Files%\client-xml\stable-no\or
  • %Program Files%\client-xml\stable-no\TTckn
  • %Program Files%\client-xml\stable-no\Wm19
  • %Program Files%\client-xml\stable-no\xbq
  • %Program Files%\client-xml\stable-no\zJK2b
  • %Program Files%\client-xml\stable-no
  • %Program Files%\client-xml\setup-i
  • %Program Files%\client-xml
  • %User Temp%\is-{Random 2}.tmp\_isetup
  • %User Temp%\is-{Random 2}.tmp
  • %User Temp%\is-{Random 1}.tmp

Step 7

Scan your computer with your Trend Micro product to delete files detected as Trojan.Win32.DROPPER.CER. 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.