Analysis

  • max time kernel
    298s
  • max time network
    287s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    21/04/2026, 04:36

General

  • Target
    $R0/Uninstall LegacyLauncher.exe
  • Size 203KB
  • Sample260421-e8kacshw9m
  • SHA256 eac6845ccd5cca4afed6d41706f1f79f0cd2244be68e272d856e267ec798ddb8
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 13 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Using powershell.exe command.

  • Hide Artifacts: Ignore Process Interrupts 1 TTPs 1 IoCs

    Command interpreters often include specific commands/flags that ignore errors and other hangups.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 24 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\$R0\Uninstall LegacyLauncher.exe
    "C:\Users\Admin\AppData\Local\Temp\$R0\Uninstall LegacyLauncher.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4968
    • C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe
      "C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe" _?=C:\Users\Admin\AppData\Local\Temp\$R0\
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3584
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe" -C "if (Get-Command Get-CimInstance -ErrorAction SilentlyContinue) { exit 0 } else { exit 1 }"
        3⤵
        • Hide Artifacts: Ignore Process Interrupts
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:496
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe" -C "if ((Get-ExecutionPolicy -Scope Process) -eq 'Restricted') { exit 1 } else { exit 0 }"
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1572
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe" -C "if ((Get-CimInstance -ClassName Win32_Process | ? {$_.Path -and $_.Path.StartsWith('C:\Users\Admin\AppData\Local\Programs\LegacyLauncher', 'CurrentCultureIgnoreCase')}).Count -gt 0) { exit 0 } else { exit 1 }"
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3268

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        powershell.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
        • Size 2KB
        • SHA256 56b3adbf18e46f82c8075f712785ea8e59e3125a90ce26b8b0d20687401340d6
        • MD5 SHA1 SHA512 TLSH

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 16KB
        • SHA256 01b7cca0be9e866d855530f8758b2522006bc6f6aaaac325e08d06f9d1c0b136
        • MD5 SHA1 SHA512 SSDEEP TLSH

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 16KB
        • SHA256 7a0975f47e0c8f6f524fed1be73b6393250c4215c9218d9c704a61a76addab72
        • MD5 SHA1 SHA512 SSDEEP TLSH

        __PSScriptPolicyTest_t4gdhln2.dux.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_t4gdhln2.dux.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512 TLSH

        StdUtils.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsf2C3C.tmp\StdUtils.dll
        • Size 100KB
        • SHA256 b72e9013a6204e9f01076dc38dabbf30870d44dfc66962adbf73619d4331601e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        System.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsf2C3C.tmp\System.dll
        • Size 12KB
        • SHA256 3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca
        • MD5 SHA1 SHA512 SSDEEP TLSH

        UAC.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsf2C3C.tmp\UAC.dll
        • Size 14KB
        • SHA256 2f7f8fc05dc4fd0d5cda501b47e4433357e887bbfed7292c028d99c73b52dc08
        • MD5 SHA1 SHA512 SSDEEP TLSH

        WinShell.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsf2C3C.tmp\WinShell.dll
        • Size 3KB
        • SHA256 9be85b986ea66a6997dde658abe82b3147ed2a1a3dcb784bb5176f41d22815a6
        • MD5 SHA1 SHA512 TLSH

        modern-wizard.bmp

        • Path C:\Users\Admin\AppData\Local\Temp\nsf2C3C.tmp\modern-wizard.bmp
        • Size 150KB
        • SHA256 2079f7a3eba60e0d9ee827a7208aa052a71b384873b641de5e299aeb8e733109
        • MD5 SHA1 SHA512 SSDEEP TLSH

        nsDialogs.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsf2C3C.tmp\nsDialogs.dll
        • Size 9KB
        • SHA256 1e40211af65923c2f4fd02ce021458a7745d28e2f383835e3015e96575632172
        • MD5 SHA1 SHA512 SSDEEP TLSH

        nsExec.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsf2C3C.tmp\nsExec.dll
        • Size 6KB
        • SHA256 5d9ceb1ce5f35aea5f9e5a0c0edeeec04dfefe0c77890c80c70e98209b58b962
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Un_A.exe

        • Path C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe
        • Size 203KB
        • SHA256 eac6845ccd5cca4afed6d41706f1f79f0cd2244be68e272d856e267ec798ddb8
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/496-39-0x0000000005260000-0x000000000588A000-memory.dmp

        memory/496-68-0x0000000007420000-0x0000000007444000-memory.dmp

        memory/496-41-0x0000000005180000-0x00000000051E6000-memory.dmp

        memory/496-49-0x00000000059F0000-0x0000000005D47000-memory.dmp

        memory/496-50-0x0000000005E70000-0x0000000005E8E000-memory.dmp

        memory/496-51-0x0000000005EB0000-0x0000000005EFC000-memory.dmp

        memory/496-52-0x000000007F250000-0x000000007F260000-memory.dmp

        memory/496-53-0x0000000006450000-0x0000000006484000-memory.dmp

        memory/496-62-0x0000000002BE0000-0x0000000002BF0000-memory.dmp

        memory/496-61-0x0000000007040000-0x000000000705E000-memory.dmp

        memory/496-54-0x000000006F930000-0x000000006F97C000-memory.dmp

        memory/496-63-0x0000000007070000-0x0000000007114000-memory.dmp

        memory/496-65-0x00000000071E0000-0x00000000071FA000-memory.dmp

        memory/496-64-0x0000000007820000-0x0000000007E9A000-memory.dmp

        memory/496-66-0x0000000007260000-0x000000000726A000-memory.dmp

        memory/496-42-0x0000000005980000-0x00000000059E6000-memory.dmp

        memory/496-67-0x00000000073F0000-0x000000000741A000-memory.dmp

        memory/496-69-0x000000006FA90000-0x000000006FDE7000-memory.dmp

        memory/496-40-0x0000000004FE0000-0x0000000005002000-memory.dmp

        memory/496-36-0x0000000002BE0000-0x0000000002BF0000-memory.dmp

        memory/496-38-0x0000000002BE0000-0x0000000002BF0000-memory.dmp

        memory/496-37-0x00000000029A0000-0x00000000029D6000-memory.dmp

        memory/1572-92-0x0000000007410000-0x00000000074A6000-memory.dmp

        memory/1572-93-0x0000000007340000-0x0000000007351000-memory.dmp

        memory/1572-85-0x000000006F930000-0x000000006F97C000-memory.dmp

        memory/1572-77-0x0000000005870000-0x0000000005BC7000-memory.dmp

        memory/3268-107-0x000000006F930000-0x000000006F97C000-memory.dmp

        memory/3268-114-0x000000006FB60000-0x000000006FEB7000-memory.dmp

        memory/3584-30-0x0000000002DB0000-0x0000000002E8A000-memory.dmp

        memory/3584-145-0x0000000002DB0000-0x0000000002E8A000-memory.dmp