Analysis

  • user interaction
    yes
  • max time kernel
    22s
  • max time network
    22s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250610-en
  • resource tags

    arch:x64arch:x86image:win11-20250610-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    11/05/2026, 16:43

General

  • Target
    challenge.exe
  • Size 15.9MB
  • Sample260511-t8egfaez2x
  • SHA256 b54e62274c015d937f9fd6dc59260f34e1bf2166fdba0a26cd9711e541e13a74
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Using powershell.exe command.

  • Modifies trusted root certificate store through registry 1 TTPs 2 IoCs

    A root certificate was added, modified, or removed in the trusted certificate store registry paths.

  • Modifies system certificate store 2 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\challenge.exe
    "C:\Users\Admin\AppData\Local\Temp\challenge.exe"
    1⤵
    • Modifies trusted root certificate store through registry
    • Modifies system certificate store
    • Suspicious use of WriteProcessMemory
    PID:5244
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -NoProfile -NonInteractive -Command "(Get-ItemProperty 'HKLM:\SOFTWARE\Microsoft\Cryptography').MachineGuid"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5972
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -NoProfile -NonInteractive -Command "(Get-WmiObject Win32_ComputerSystemProduct | Select-Object -First 1).UUID"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:956
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -NoProfile -NonInteractive -Command "(Get-WmiObject Win32_DiskDrive | Select-Object -First 1).SerialNumber"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5064
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -NoProfile -NonInteractive -Command "(Get-WmiObject Win32_Processor | Select-Object -First 1).ProcessorId"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5116

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\UsageLogs\powershell.exe.log
        • Size 2KB
        • SHA256 43244c0820ec5074e654ecd149fa744f51b2c1522e90285567713dae64b62f59
        • MD5 SHA1 SHA512 TLSH

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 1KB
        • SHA256 3a3dd2d4bdfc17d64262f4dc86ceb242ecf743f2da0412eb60074557a741a5eb
        • MD5 SHA1 SHA512 TLSH

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 1KB
        • SHA256 6a6f7a56ec1088ade2c4018be88ae88bf1759de1efd9ac020fe14852d4e7f805
        • MD5 SHA1 SHA512 TLSH

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 1KB
        • SHA256 4c6de1b0d420c6f20e8cfb389f692e1615aea6e4cf09c20472dd0f0b9a73eafa
        • MD5 SHA1 SHA512 TLSH

        __PSScriptPolicyTest_vtb2i3w5.vsa.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vtb2i3w5.vsa.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512 TLSH

        memory/956-27-0x000001CB6F340000-0x000001CB6F352000-memory.dmp

        memory/956-26-0x000001CB57050000-0x000001CB5705C000-memory.dmp

        memory/956-24-0x000001CB6F1E0000-0x000001CB6F1F0000-memory.dmp

        memory/956-15-0x000001CB6F1E0000-0x000001CB6F1F0000-memory.dmp

        memory/956-16-0x000001CB6F1E0000-0x000001CB6F1F0000-memory.dmp

        memory/5064-36-0x0000027D98F10000-0x0000027D98F1C000-memory.dmp

        memory/5064-37-0x0000027D990D0000-0x0000027D990E2000-memory.dmp

        memory/5116-46-0x000002663EE80000-0x000002663EE8C000-memory.dmp

        memory/5116-47-0x0000026658BC0000-0x0000026658BD2000-memory.dmp

        memory/5244-48-0x0000020072A50000-0x0000020072A5C000-memory.dmp

        memory/5972-13-0x0000020869350000-0x0000020869362000-memory.dmp

        memory/5972-12-0x00000208692E0000-0x00000208692EC000-memory.dmp

        memory/5972-9-0x0000020869300000-0x0000020869310000-memory.dmp

        memory/5972-8-0x0000020869A00000-0x0000020869A22000-memory.dmp

        memory/5972-0-0x0000020869300000-0x0000020869310000-memory.dmp

        memory/5972-1-0x0000020869300000-0x0000020869310000-memory.dmp