Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260513-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260513-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
  • submitted
    22/05/2026, 21:40

General

  • Target
    tmpz72uqk35.exe
  • Size 9.1MB
  • Sample260522-1jdl6shw9s
  • SHA256 6b03bb79a0dc335e541567ae09f7cc689c10915a3f49aebacfb7301d1bc4ad4b
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Glupteba

    Glupteba is a modular loader written in Golang with various components.

  • Glupteba payload 1 IoCs
  • Windows security bypass 2 TTPs 7 IoCs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Executes dropped EXE 6 IoCs
  • Windows security modification 2 TTPs 7 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Manipulates WinMonFS driver. 1 IoCs

    Roottkits write to WinMonFS to hide directories/files from being detected.

  • Drops file in System32 directory 9 IoCs
  • Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs

    Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.

  • Drops file in Windows directory 2 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 11 IoCs

    Using powershell.exe command.

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • System Location Discovery: System Language Discovery 1 TTPs 18 IoCs

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

  • Modifies data under HKEY_USERS 64 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmpz72uqk35.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpz72uqk35.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1524
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1084
    • C:\Users\Admin\AppData\Local\Temp\tmpz72uqk35.exe
      "C:\Users\Admin\AppData\Local\Temp\tmpz72uqk35.exe"
      2⤵
      • Windows security bypass
      • Windows security modification
      • Adds Run key to start application
      • Checks for VirtualBox DLLs, possible anti-VM trick
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3084
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        3⤵
        • Drops file in System32 directory
        • Command and Scripting Interpreter: PowerShell
        • System Location Discovery: System Language Discovery
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2672
      • C:\Windows\system32\cmd.exe
        C:\Windows\Sysnative\cmd.exe /C "netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1104
        • C:\Windows\system32\netsh.exe
          netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes
          4⤵
          • Modifies Windows Firewall
          • Event Triggered Execution: Netsh Helper DLL
          PID:4644
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        3⤵
        • Drops file in System32 directory
        • Command and Scripting Interpreter: PowerShell
        • System Location Discovery: System Language Discovery
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4804
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        3⤵
        • Drops file in System32 directory
        • Command and Scripting Interpreter: PowerShell
        • System Location Discovery: System Language Discovery
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3952
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Manipulates WinMonFS driver.
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:3788
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell -nologo -noprofile
          4⤵
          • Drops file in System32 directory
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4104
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
          4⤵
          • Scheduled Task/Job: Scheduled Task
          PID:1200
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:4504
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -nologo -noprofile
            4⤵
            • Drops file in System32 directory
            • Command and Scripting Interpreter: PowerShell
            • System Location Discovery: System Language Discovery
            • Modifies data under HKEY_USERS
            • Suspicious behavior: EnumeratesProcesses
            PID:956
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -nologo -noprofile
            4⤵
            • Drops file in System32 directory
            • Command and Scripting Interpreter: PowerShell
            • System Location Discovery: System Language Discovery
            • Modifies data under HKEY_USERS
            • Suspicious behavior: EnumeratesProcesses
            PID:3848
          • C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
            C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe taskmgr.exe C:\Users\Admin\AppData\Local\Temp\csrss\injector\NtQuerySystemInformationHook.dll
            4⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            PID:712
          • C:\Windows\SYSTEM32\schtasks.exe
            schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
            4⤵
            • Scheduled Task/Job: Scheduled Task
            PID:644
    • C:\Windows\rss\csrss.exe
      "C:\Windows\rss\csrss.exe"
      1⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1492
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        2⤵
        • Command and Scripting Interpreter: PowerShell
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:1088
      • C:\Windows\rss\csrss.exe
        "C:\Windows\rss\csrss.exe"
        2⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4980
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell -nologo -noprofile
          3⤵
          • Drops file in System32 directory
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          PID:3592
    • C:\Windows\rss\csrss.exe
      C:\Windows\rss\csrss.exe
      1⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1080
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        2⤵
        • Command and Scripting Interpreter: PowerShell
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:4292
      • C:\Windows\rss\csrss.exe
        "C:\Windows\rss\csrss.exe"
        2⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4648
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell -nologo -noprofile
          3⤵
          • Drops file in System32 directory
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          PID:4284

    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 b0f9cae7ea248a3bc31f948a1efe46a49acce56c3070eb2585db17839175be64
          • MD5 SHA1 SHA512 TLSH

          StartupProfileData-Interactive

          • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
          • Size 23KB
          • SHA256 72d7739348b007d37393d7c7ca5c8374e1120329d8ff66d0c8ec37fe10f566ed
          • MD5 SHA1 SHA512 SSDEEP TLSH

          StartupProfileData-Interactive

          • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
          • Size 23KB
          • SHA256 f56c3ab6a0378129fd3dc93b3e7fefee7cc6681dddce2ace84fb257cafb8575f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          __PSScriptPolicyTest_tbjnukrg.h3k.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tbjnukrg.h3k.ps1
          • Size 60B
          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
          • MD5 SHA1 SHA512 TLSH

          injector.exe

          • Path C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
          • Size 281KB
          • SHA256 5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
          • MD5 SHA1 SHA512 SSDEEP TLSH

          powershell.exe.log

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
          • Size 2KB
          • SHA256 730aff8c9e430a9f9e5e44f1c376e57f42fa5adc744824df2f69855009473592
          • MD5 SHA1 SHA512 TLSH

          StartupProfileData-Interactive

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
          • Size 21KB
          • SHA256 d5943c5bb1b3fd6378df3e7c27d5b14cde020822aa4284e6b6d240cbe3ed1305
          • MD5 SHA1 SHA512 SSDEEP TLSH

          StartupProfileData-Interactive

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
          • Size 21KB
          • SHA256 fd8eaa8a426035c06a95dcc346af385baccf93fb851e596e9b5f62228f388295
          • MD5 SHA1 SHA512 SSDEEP TLSH

          StartupProfileData-Interactive

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
          • Size 21KB
          • SHA256 5dc98a16001c6d20579b18c10ba3c784e1f76000f661904249c88080ec77b952
          • MD5 SHA1 SHA512 SSDEEP TLSH

          StartupProfileData-Interactive

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
          • Size 21KB
          • SHA256 af82ebd91e19e2c57243cca9404858aac7fb8a3343febfcd2e01e6a2e97a34e9
          • MD5 SHA1 SHA512 SSDEEP TLSH

          StartupProfileData-Interactive

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
          • Size 21KB
          • SHA256 80427de34d54f4a62d6bdd42020d7348814ab01c60858a4e39b521b0cc6d78bb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          StartupProfileData-Interactive

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
          • Size 21KB
          • SHA256 7924fdadb5e9eaa97961c9f56e0309c5d1210ac567714c637d8b65ee608f6945
          • MD5 SHA1 SHA512 SSDEEP TLSH

          StartupProfileData-Interactive

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
          • Size 21KB
          • SHA256 7e3f191cc94512b65d2eb234e7d4efdc63e313d471c402970a1699a763ed20bd
          • MD5 SHA1 SHA512 SSDEEP TLSH

          csrss.exe

          • Path C:\Windows\rss\csrss.exe
          • Size 9.1MB
          • SHA256 6b03bb79a0dc335e541567ae09f7cc689c10915a3f49aebacfb7301d1bc4ad4b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/956-155-0x0000000006810000-0x000000000685C000-memory.dmp

          memory/956-157-0x0000000070D60000-0x0000000070DAC000-memory.dmp

          memory/956-153-0x00000000062C0000-0x0000000006617000-memory.dmp

          memory/956-158-0x0000000070EE0000-0x0000000071237000-memory.dmp

          memory/1084-23-0x0000000070EB0000-0x0000000070EFC000-memory.dmp

          memory/1084-20-0x0000000007D20000-0x0000000007D3A000-memory.dmp

          memory/1084-28-0x00000000052D0000-0x00000000052E0000-memory.dmp

          memory/1084-26-0x00000000052D0000-0x00000000052E0000-memory.dmp

          memory/1084-35-0x0000000007F30000-0x0000000007F4E000-memory.dmp

          memory/1084-36-0x0000000007F50000-0x0000000007FF3000-memory.dmp

          memory/1084-37-0x0000000008030000-0x000000000803A000-memory.dmp

          memory/1084-38-0x00000000080E0000-0x0000000008176000-memory.dmp

          memory/1084-16-0x00000000069E0000-0x0000000006A2C000-memory.dmp

          memory/1084-15-0x0000000006930000-0x000000000694E000-memory.dmp

          memory/1084-14-0x0000000006310000-0x0000000006667000-memory.dmp

          memory/1084-18-0x0000000007C80000-0x0000000007CF6000-memory.dmp

          memory/1084-6-0x0000000006230000-0x0000000006296000-memory.dmp

          memory/1084-24-0x0000000071040000-0x0000000071397000-memory.dmp

          memory/1084-1-0x00000000052E0000-0x0000000005316000-memory.dmp

          memory/1084-0-0x00000000052D0000-0x00000000052E0000-memory.dmp

          memory/1084-2-0x00000000052D0000-0x00000000052E0000-memory.dmp

          memory/1084-3-0x00000000059F0000-0x00000000060BA000-memory.dmp

          memory/1084-22-0x0000000007ED0000-0x0000000007F02000-memory.dmp

          memory/1084-4-0x00000000058F0000-0x0000000005912000-memory.dmp

          memory/1084-27-0x00000000052D0000-0x00000000052E0000-memory.dmp

          memory/1084-21-0x000000007F8B0000-0x000000007F8C0000-memory.dmp

          memory/1084-17-0x0000000006F10000-0x0000000006F54000-memory.dmp

          memory/1084-5-0x00000000061C0000-0x0000000006226000-memory.dmp

          memory/1084-19-0x0000000008380000-0x00000000089FA000-memory.dmp

          memory/1088-134-0x0000000070F20000-0x0000000070F6C000-memory.dmp

          memory/1088-135-0x0000000071280000-0x00000000715D7000-memory.dmp

          memory/2672-59-0x0000000007B80000-0x0000000007C23000-memory.dmp

          memory/2672-51-0x0000000071140000-0x0000000071497000-memory.dmp

          memory/2672-50-0x0000000070FC0000-0x000000007100C000-memory.dmp

          memory/2672-49-0x0000000006E80000-0x0000000006ECC000-memory.dmp

          memory/2672-48-0x0000000006520000-0x0000000006877000-memory.dmp

          memory/3592-182-0x0000000070EE0000-0x0000000071237000-memory.dmp

          memory/3592-181-0x0000000070D60000-0x0000000070DAC000-memory.dmp

          memory/3848-211-0x0000000070D60000-0x0000000070DAC000-memory.dmp

          memory/3848-221-0x0000000007720000-0x00000000077C3000-memory.dmp

          memory/3848-212-0x0000000070EE0000-0x0000000071237000-memory.dmp

          memory/3952-91-0x0000000071140000-0x0000000071497000-memory.dmp

          memory/3952-90-0x0000000070FC0000-0x000000007100C000-memory.dmp

          memory/4104-125-0x0000000071280000-0x00000000715D7000-memory.dmp

          memory/4104-124-0x0000000070F20000-0x0000000070F6C000-memory.dmp

          memory/4104-122-0x0000000006930000-0x000000000697C000-memory.dmp

          memory/4104-106-0x0000000006280000-0x00000000065D7000-memory.dmp

          memory/4104-133-0x0000000007B60000-0x0000000007C03000-memory.dmp

          memory/4284-231-0x0000000070D60000-0x0000000070DAC000-memory.dmp

          memory/4284-240-0x0000000007580000-0x0000000007623000-memory.dmp

          memory/4284-232-0x0000000070EE0000-0x0000000071237000-memory.dmp

          memory/4292-201-0x0000000070EE0000-0x0000000071237000-memory.dmp

          memory/4292-209-0x0000000007E80000-0x0000000007F23000-memory.dmp

          memory/4292-200-0x0000000070D60000-0x0000000070DAC000-memory.dmp

          memory/4804-73-0x0000000071310000-0x0000000071667000-memory.dmp

          memory/4804-72-0x0000000070FC0000-0x000000007100C000-memory.dmp

          memory/4804-70-0x00000000056D0000-0x0000000005A27000-memory.dmp