Analysis

  • user interaction
    yes
  • max time kernel
    9s
  • max time network
    9s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    03/10/2026, 12:51

General

  • Target
    builder.exe
  • Size 6.9MB
  • Sample261003-p3wrbazyex
  • SHA256 409ccd057be807603e155a2a8579dfd9c7b67c0984db27b5e259fe438ef3fa8c
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Deletes Windows Defender Definitions 2 TTPs 1 IoCs

    Uses mpcmdrun utility to delete all AV definitions.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Disables one or more Microsoft Defender components 1 TTPs 1 IoCs

    Uses the Powershell Set-MpPreference cmdlet to disable one or more Microsoft Defender components.

  • Loads dropped DLL 17 IoCs
  • Enumerates connected drives 3 TTPs 2 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Looks up external IP address via web service 1 TTPs 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Discovers running processes 1 TTPs 1 IoCs

    Running process information can be used to identify security tools or plan follow-on actions.

  • UPX packed file 51 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Queries system WMI classes for hardware identifiers 2 TTPs 1 IoCs

    Uses WMI to read hardware serial numbers or the system UUID, commonly used to fingerprint the victim machine.

  • Executes a command shell one-liner 1 TTPs 5 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 4 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\builder.exe
    "C:\Users\Admin\AppData\Local\Temp\builder.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4176
    • C:\Users\Admin\AppData\Local\Temp\builder.exe
      "C:\Users\Admin\AppData\Local\Temp\builder.exe"
      2⤵
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious use of WriteProcessMemory
      PID:4040
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c "powershell -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\builder.exe'"
        3⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:5892
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\builder.exe'
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Enumerates connected drives
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:5764
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c "powershell Set-MpPreference -DisableIntrusionPreventionSystem $true -DisableIOAVProtection $true -DisableRealtimeMonitoring $true -DisableScriptScanning $true -EnableControlledFolderAccess Disabled -EnableNetworkProtection AuditMode -Force -MAPSReporting Disabled -SubmitSamplesConsent NeverSend && powershell Set-MpPreference -SubmitSamplesConsent 2 & "%ProgramFiles%\Windows Defender\MpCmdRun.exe" -RemoveDefinitions -All"
        3⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:3016
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell Set-MpPreference -DisableIntrusionPreventionSystem $true -DisableIOAVProtection $true -DisableRealtimeMonitoring $true -DisableScriptScanning $true -EnableControlledFolderAccess Disabled -EnableNetworkProtection AuditMode -Force -MAPSReporting Disabled -SubmitSamplesConsent NeverSend
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Disables one or more Microsoft Defender components
          • Enumerates connected drives
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3376
        • C:\Program Files\Windows Defender\MpCmdRun.exe
          "C:\Program Files\Windows Defender\MpCmdRun.exe" -RemoveDefinitions -All
          4⤵
          • Deletes Windows Defender Definitions
          PID:2744
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c "mshta "javascript:var sh=new ActiveXObject('WScript.Shell'); sh.Popup('Failed connecting to Blank Grabber restart service and tray agin in 1 min', 0, 'ERROR', 48+16);close()""
        3⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:4084
        • C:\Windows\system32\mshta.exe
          mshta "javascript:var sh=new ActiveXObject('WScript.Shell'); sh.Popup('Failed connecting to Blank Grabber restart service and tray agin in 1 min', 0, 'ERROR', 48+16);close()"
          4⤵
            PID:1768
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c "tasklist /FO LIST"
          3⤵
          • Executes a command shell one-liner
          • Suspicious use of WriteProcessMemory
          PID:3728
          • C:\Windows\system32\tasklist.exe
            tasklist /FO LIST
            4⤵
            • Discovers running processes
            • Suspicious use of AdjustPrivilegeToken
            PID:2712
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c "wmic csproduct get uuid"
          3⤵
          • Executes a command shell one-liner
          • Suspicious use of WriteProcessMemory
          PID:4924
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic csproduct get uuid
            4⤵
            • Queries system WMI classes for hardware identifiers
            • Reads the TCP/IP host and domain name from the registry
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:4640

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          StartupProfileData-NonInteractive

          • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
          • Size 1KB
          • SHA256 749aaba736648e246b89ae3a6987b644bd1a90bcc2e9f73bfbf9eb03a77c32e9
          • MD5 SHA1 SHA512 TLSH

          VCRUNTIME140.dll

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41762\VCRUNTIME140.dll
          • Size 96KB
          • SHA256 d66c3b47091ceb3f8d3cc165a43d285ae919211a0c0fcb74491ee574d8d464f8
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _bz2.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41762\_bz2.pyd
          • Size 46KB
          • SHA256 df1e666b55aae6ede59ef672d173bd0d64ef3e824a64918e081082b8626a5861
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _ctypes.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41762\_ctypes.pyd
          • Size 57KB
          • SHA256 cd31af70cbcfe81b01a75ebeb2de86079f4cbe767b75c3b5799ef8b9f0392d65
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _decimal.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41762\_decimal.pyd
          • Size 104KB
          • SHA256 f90efa10d90d940cde48aafe02c13a0fc0a1f0be7f3714856b7a1435f5decf29
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _hashlib.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41762\_hashlib.pyd
          • Size 33KB
          • SHA256 54348cfbf95fd818d74014c16343d9134282d2cf238329eec2cda1e2591565ec
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _lzma.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41762\_lzma.pyd
          • Size 84KB
          • SHA256 1549fe64b710818950aa9bf45d43fe278ce59f3b87b3497d2106ff793efa6cf7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _queue.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41762\_queue.pyd
          • Size 24KB
          • SHA256 699c1f0f0387511ef543c0df7ef81a13a1cffde4ce4cd43a1baf47a893b99163
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _socket.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41762\_socket.pyd
          • Size 41KB
          • SHA256 a0fa25eef91825797f01754b7d7cf5106e355cf21322e926632f90af01280abe
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _sqlite3.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41762\_sqlite3.pyd
          • Size 54KB
          • SHA256 d6960f4426c09a12488eb457e62506c49a58d62a1cb16fbc3ae66b260453c2ed
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _ssl.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41762\_ssl.pyd
          • Size 60KB
          • SHA256 a9b5f6c7a94fb6bfaf82024f906465ff39f9849e4a72a98a9b03fc07bf26da51
          • MD5 SHA1 SHA512 SSDEEP TLSH

          base_library.zip

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41762\base_library.zip
          • Size 1.4MB
          • SHA256 db389a9e14bfac6ee5cce17d41f9637d3ff8b702cc74102db8643e78659670a0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          blank.aes

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41762\blank.aes
          • Size 121KB
          • SHA256 771e465e3aba2236ab474963081faed7f9a0de627091bc4d58a07ea9526aff97
          • MD5 SHA1 SHA512 SSDEEP TLSH

          blank.aes

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41762\blank.aes
          • Size 121KB
          • SHA256 262db653e289b4d6621b2862da477a3652a6db89c71464f0e93da54bc233d137
          • MD5 SHA1 SHA512 SSDEEP TLSH

          libcrypto-1_1.dll

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41762\libcrypto-1_1.dll
          • Size 1.1MB
          • SHA256 4dab915333d42f071fe466df5578fd98f38f9e0efa6d9355e9b4445ffa1ca914
          • MD5 SHA1 SHA512 SSDEEP TLSH

          libffi-8.dll

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41762\libffi-8.dll
          • Size 24KB
          • SHA256 5c4a0d4910987a38a3cd31eae5f1c909029f7762d1a5faf4a2e2a7e9b1abab79
          • MD5 SHA1 SHA512 SSDEEP TLSH

          libssl-1_1.dll

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41762\libssl-1_1.dll
          • Size 203KB
          • SHA256 60771fb23ee37b4414d364e6477490324f142a907308a691f3dd88dc25e38d6c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          python311.dll

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41762\python311.dll
          • Size 1.6MB
          • SHA256 72c24e1db1ba4df791720a93ca9502d77c3738eebf8b9092a5d82aa8d80121d0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          rar.exe

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41762\rar.exe
          • Size 615KB
          • SHA256 90341ac8dcc9ec5f9efe89945a381eb701fe15c3196f594d9d9f0f67b4fc2213
          • MD5 SHA1 SHA512 SSDEEP TLSH

          rarreg.key

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41762\rarreg.key
          • Size 456B
          • SHA256 58209c8ab4191e834ffe2ecd003fd7a830d3650f0fd1355a74eb8a47c61d4211
          • MD5 SHA1 SHA512 TLSH

          select.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41762\select.pyd
          • Size 24KB
          • SHA256 ddeade367bc15ea09d42b2733d88f092da5e880362eabe98d574bc91e03de30e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          sqlite3.dll

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41762\sqlite3.dll
          • Size 608KB
          • SHA256 a9dd0275131105df5611f31a9e6fbf27fd77d0a35d1a73a9f4941235fbc68bd7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          unicodedata.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI41762\unicodedata.pyd
          • Size 293KB
          • SHA256 5e2f1bbfe3743a81b00717011094798929a764f64037bedb7ea3d2ed6548eb87
          • MD5 SHA1 SHA512 SSDEEP TLSH

          __PSScriptPolicyTest_i03gxav0.rek.psm1

          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_i03gxav0.rek.psm1
          • Size 60B
          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
          • MD5 SHA1 SHA512 TLSH

          memory/3376-90-0x00000226FF2D0000-0x00000226FF2EE000-memory.dmp

          memory/3376-96-0x00000226E6E30000-0x00000226E6E3A000-memory.dmp

          memory/3376-91-0x00000226FF580000-0x00000226FF632000-memory.dmp

          memory/4040-71-0x00007FFB104A0000-0x00007FFB10558000-memory.dmp

          memory/4040-93-0x00007FFB10890000-0x00007FFB10A03000-memory.dmp

          memory/4040-64-0x00007FFB166C0000-0x00007FFB166CD000-memory.dmp

          memory/4040-63-0x00007FFB14B10000-0x00007FFB14B29000-memory.dmp

          memory/4040-66-0x00007FFB12AF0000-0x00007FFB12B1E000-memory.dmp

          memory/4040-58-0x00007FFB14B50000-0x00007FFB14B73000-memory.dmp

          memory/4040-70-0x00007FFAFDB60000-0x00007FFAFE148000-memory.dmp

          memory/4040-72-0x000002824BAA0000-0x000002824BE15000-memory.dmp

          memory/4040-76-0x00007FFB14AF0000-0x00007FFB14B04000-memory.dmp

          memory/4040-79-0x00007FFB12AA0000-0x00007FFB12AAD000-memory.dmp

          memory/4040-78-0x00007FFB14BA0000-0x00007FFB14BCD000-memory.dmp

          memory/4040-81-0x00007FFB08F50000-0x00007FFB0906C000-memory.dmp

          memory/4040-74-0x00007FFB14BD0000-0x00007FFB14BF4000-memory.dmp

          memory/4040-73-0x00007FFB032F0000-0x00007FFB03665000-memory.dmp

          memory/4040-24-0x00007FFAFDB60000-0x00007FFAFE148000-memory.dmp

          memory/4040-56-0x00007FFB14B80000-0x00007FFB14B99000-memory.dmp

          memory/4040-54-0x00007FFB14BA0000-0x00007FFB14BCD000-memory.dmp

          memory/4040-92-0x00007FFB14B50000-0x00007FFB14B73000-memory.dmp

          memory/4040-32-0x00007FFB17DA0000-0x00007FFB17DAF000-memory.dmp

          memory/4040-60-0x00007FFB10890000-0x00007FFB10A03000-memory.dmp

          memory/4040-30-0x00007FFB14BD0000-0x00007FFB14BF4000-memory.dmp

          memory/4040-98-0x00007FFB14BD0000-0x00007FFB14BF4000-memory.dmp

          memory/4040-102-0x00007FFB14B50000-0x00007FFB14B73000-memory.dmp

          memory/4040-101-0x00007FFB14B80000-0x00007FFB14B99000-memory.dmp

          memory/4040-107-0x00007FFB104A0000-0x00007FFB10558000-memory.dmp

          memory/4040-108-0x00007FFB032F0000-0x00007FFB03665000-memory.dmp

          memory/4040-111-0x00007FFB08F50000-0x00007FFB0906C000-memory.dmp

          memory/4040-110-0x00007FFB12AA0000-0x00007FFB12AAD000-memory.dmp

          memory/4040-103-0x00007FFB10890000-0x00007FFB10A03000-memory.dmp

          memory/4040-109-0x00007FFB14AF0000-0x00007FFB14B04000-memory.dmp

          memory/4040-106-0x00007FFB12AF0000-0x00007FFB12B1E000-memory.dmp

          memory/4040-105-0x00007FFB166C0000-0x00007FFB166CD000-memory.dmp

          memory/4040-104-0x00007FFB14B10000-0x00007FFB14B29000-memory.dmp

          memory/4040-97-0x00007FFAFDB60000-0x00007FFAFE148000-memory.dmp

          memory/4040-100-0x00007FFB14BA0000-0x00007FFB14BCD000-memory.dmp

          memory/4040-99-0x00007FFB17DA0000-0x00007FFB17DAF000-memory.dmp

          memory/5764-84-0x00000228CE300000-0x00000228CE322000-memory.dmp