Analysis

  • max time kernel
    145s
  • max time network
    148s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240426-en
  • resource tags

    arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    18/05/2024, 11:30

General

  • Target
    5e72223c76b6c89c84a54e2ff80d974eb409ac8ac566705177b9a6e4ac2ecfb6.exe
  • Size 4.1MB
  • Sample240518-nl9feahd2s
  • SHA256 5e72223c76b6c89c84a54e2ff80d974eb409ac8ac566705177b9a6e4ac2ecfb6
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Glupteba

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

  • Glupteba payload 19 IoCs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Executes dropped EXE 4 IoCs
  • UPX packed file 7 IoCs

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

  • 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 6 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 4 IoCs
  • Launches sc.exe 1 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 7 IoCs

    Using powershell.exe command.

  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Modifies data under HKEY_USERS 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 11 IoCs
  • Suspicious use of WriteProcessMemory 36 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\5e72223c76b6c89c84a54e2ff80d974eb409ac8ac566705177b9a6e4ac2ecfb6.exe
    "C:\Users\Admin\AppData\Local\Temp\5e72223c76b6c89c84a54e2ff80d974eb409ac8ac566705177b9a6e4ac2ecfb6.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4968
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3332
    • C:\Users\Admin\AppData\Local\Temp\5e72223c76b6c89c84a54e2ff80d974eb409ac8ac566705177b9a6e4ac2ecfb6.exe
      "C:\Users\Admin\AppData\Local\Temp\5e72223c76b6c89c84a54e2ff80d974eb409ac8ac566705177b9a6e4ac2ecfb6.exe"
      2⤵
      • Adds Run key to start application
      • Checks for VirtualBox DLLs, possible anti-VM trick
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:740
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        3⤵
        • Drops file in System32 directory
        • Command and Scripting Interpreter: PowerShell
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1804
      • 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:3632
        • 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
          PID:4568
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        3⤵
        • Drops file in System32 directory
        • Command and Scripting Interpreter: PowerShell
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4636
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        3⤵
        • Drops file in System32 directory
        • Command and Scripting Interpreter: PowerShell
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:864
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Manipulates WinMonFS driver.
        • Drops file in Windows directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2552
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell -nologo -noprofile
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Modifies data under HKEY_USERS
          PID:4852
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
          4⤵
          • Creates scheduled task(s)
          PID:4864
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:2732
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -nologo -noprofile
            4⤵
            • Drops file in System32 directory
            • Command and Scripting Interpreter: PowerShell
            • Modifies data under HKEY_USERS
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2472
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -nologo -noprofile
            4⤵
            • Drops file in System32 directory
            • Command and Scripting Interpreter: PowerShell
            • Modifies data under HKEY_USERS
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:488
          • 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:748
          • C:\Windows\SYSTEM32\schtasks.exe
            schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
            4⤵
            • Creates scheduled task(s)
            PID:1592
            • C:\Windows\System32\Conhost.exe
              \??\C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
              5⤵
                PID:1804
            • C:\Windows\windefender.exe
              "C:\Windows\windefender.exe"
              4⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:4788
              • C:\Windows\SysWOW64\cmd.exe
                cmd.exe /C sc sdset WinDefender D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPLOCRSDRCWDWO;;;BA)(D;;WPDT;;;BA)(A;;CCLCSWLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD)
                5⤵
                • Suspicious use of WriteProcessMemory
                PID:5016
                • C:\Windows\SysWOW64\sc.exe
                  sc sdset WinDefender D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPLOCRSDRCWDWO;;;BA)(D;;WPDT;;;BA)(A;;CCLCSWLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD)
                  6⤵
                  • Launches sc.exe
                  • Suspicious use of AdjustPrivilegeToken
                  PID:2292
      • C:\Windows\windefender.exe
        C:\Windows\windefender.exe
        1⤵
        • Executes dropped EXE
        • Modifies data under HKEY_USERS
        PID:1184

      Network

            MITRE ATT&CK Enterprise v15

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            Downloads

            __PSScriptPolicyTest_jbspikpr.3jk.ps1

            • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jbspikpr.3jk.ps1
            • Size 60B
            • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
            • MD5 SHA1 SHA512

            injector.exe

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

            powershell.exe.log

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
            • Size 2KB
            • SHA256 9600b3fdf0565ccb49e21656aa4b24d7c18f776bfd04d9ee984b134707550f02
            • MD5 SHA1 SHA512

            StartupProfileData-Interactive

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
            • Size 19KB
            • SHA256 2665da5f1e54fa500a60d4819412450e240fa8aaf57fde798898f204f9aaaa69
            • MD5 SHA1 SHA512 SSDEEP

            StartupProfileData-Interactive

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
            • Size 19KB
            • SHA256 bb53ad72678cc8881dfa9174643f10d2ab77eef6dc6cdd4ad9b1d9decc244d42
            • MD5 SHA1 SHA512 SSDEEP

            StartupProfileData-Interactive

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
            • Size 19KB
            • SHA256 4cb9dd2517f6047acb15d7c67f682ac1177d03b2aded62606798852c5983c813
            • MD5 SHA1 SHA512 SSDEEP

            StartupProfileData-Interactive

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
            • Size 19KB
            • SHA256 2e2985527721568c148968a89d02869790025d090544d0f6c205c49343822a47
            • MD5 SHA1 SHA512 SSDEEP

            csrss.exe

            • Path C:\Windows\rss\csrss.exe
            • Size 4.1MB
            • SHA256 5e72223c76b6c89c84a54e2ff80d974eb409ac8ac566705177b9a6e4ac2ecfb6
            • MD5 SHA1 SHA512 SSDEEP

            windefender.exe

            • Path C:\Windows\windefender.exe
            • Size 2.0MB
            • SHA256 166ddb03ff3c89bd4525ac390067e180fdd08f10fbcf4aadb0189541673c03fa
            • MD5 SHA1 SHA512 SSDEEP

            memory/488-162-0x0000000070B00000-0x0000000070B4C000-memory.dmp

            memory/488-163-0x0000000070CA0000-0x0000000070FF7000-memory.dmp

            memory/488-160-0x00000000061F0000-0x0000000006547000-memory.dmp

            memory/740-123-0x0000000000400000-0x0000000002B08000-memory.dmp

            memory/864-110-0x0000000070D60000-0x00000000710B7000-memory.dmp

            memory/864-109-0x0000000070BE0000-0x0000000070C2C000-memory.dmp

            memory/1184-198-0x0000000000400000-0x00000000008DF000-memory.dmp

            memory/1184-207-0x0000000000400000-0x00000000008DF000-memory.dmp

            memory/1184-192-0x0000000000400000-0x00000000008DF000-memory.dmp

            memory/1184-187-0x0000000000400000-0x00000000008DF000-memory.dmp

            memory/1804-52-0x00000000061A0000-0x00000000064F7000-memory.dmp

            memory/1804-61-0x0000000070BE0000-0x0000000070C2C000-memory.dmp

            memory/1804-73-0x0000000007CC0000-0x0000000007CD5000-memory.dmp

            memory/1804-72-0x0000000007C70000-0x0000000007C81000-memory.dmp

            memory/1804-71-0x0000000007920000-0x00000000079C4000-memory.dmp

            memory/1804-62-0x0000000070E50000-0x00000000711A7000-memory.dmp

            memory/2472-149-0x0000000007500000-0x0000000007511000-memory.dmp

            memory/2472-150-0x0000000005900000-0x0000000005915000-memory.dmp

            memory/2472-139-0x0000000070C80000-0x0000000070FD7000-memory.dmp

            memory/2472-148-0x00000000071B0000-0x0000000007254000-memory.dmp

            memory/2472-138-0x0000000070B00000-0x0000000070B4C000-memory.dmp

            memory/2472-137-0x0000000005FD0000-0x000000000601C000-memory.dmp

            memory/2472-136-0x0000000005AA0000-0x0000000005DF7000-memory.dmp

            memory/2552-191-0x0000000000400000-0x0000000002B08000-memory.dmp

            memory/2552-206-0x0000000000400000-0x0000000002B08000-memory.dmp

            memory/2552-180-0x0000000000400000-0x0000000002B08000-memory.dmp

            memory/2552-200-0x0000000000400000-0x0000000002B08000-memory.dmp

            memory/2552-196-0x0000000000400000-0x0000000002B08000-memory.dmp

            memory/2552-194-0x0000000000400000-0x0000000002B08000-memory.dmp

            memory/2552-203-0x0000000000400000-0x0000000002B08000-memory.dmp

            memory/2552-209-0x0000000000400000-0x0000000002B08000-memory.dmp

            memory/2552-212-0x0000000000400000-0x0000000002B08000-memory.dmp

            memory/2552-215-0x0000000000400000-0x0000000002B08000-memory.dmp

            memory/2552-218-0x0000000000400000-0x0000000002B08000-memory.dmp

            memory/2552-221-0x0000000000400000-0x0000000002B08000-memory.dmp

            memory/2552-223-0x0000000000400000-0x0000000002B08000-memory.dmp

            memory/3332-38-0x0000000074970000-0x0000000075121000-memory.dmp

            memory/3332-26-0x0000000070BE0000-0x0000000070C2C000-memory.dmp

            memory/3332-4-0x000000007497E000-0x000000007497F000-memory.dmp

            memory/3332-5-0x0000000004ED0000-0x0000000004F06000-memory.dmp

            memory/3332-7-0x0000000074970000-0x0000000075121000-memory.dmp

            memory/3332-6-0x0000000005540000-0x0000000005B6A000-memory.dmp

            memory/3332-9-0x0000000005C70000-0x0000000005CD6000-memory.dmp

            memory/3332-50-0x0000000074970000-0x0000000075121000-memory.dmp

            memory/3332-47-0x0000000007A90000-0x0000000007A98000-memory.dmp

            memory/3332-46-0x0000000007AB0000-0x0000000007ACA000-memory.dmp

            memory/3332-45-0x00000000079B0000-0x00000000079C5000-memory.dmp

            memory/3332-44-0x00000000079A0000-0x00000000079AE000-memory.dmp

            memory/3332-43-0x0000000007960000-0x0000000007971000-memory.dmp

            memory/3332-42-0x00000000079F0000-0x0000000007A86000-memory.dmp

            memory/3332-41-0x0000000007930000-0x000000000793A000-memory.dmp

            memory/3332-39-0x0000000007F30000-0x00000000085AA000-memory.dmp

            memory/3332-40-0x00000000078F0000-0x000000000790A000-memory.dmp

            memory/3332-24-0x0000000007760000-0x0000000007794000-memory.dmp

            memory/3332-10-0x0000000005CE0000-0x0000000005D46000-memory.dmp

            memory/3332-25-0x0000000074970000-0x0000000075121000-memory.dmp

            memory/3332-8-0x0000000005490000-0x00000000054B2000-memory.dmp

            memory/3332-11-0x0000000074970000-0x0000000075121000-memory.dmp

            memory/3332-36-0x00000000077A0000-0x00000000077BE000-memory.dmp

            memory/3332-20-0x0000000005DD0000-0x0000000006127000-memory.dmp

            memory/3332-37-0x00000000077C0000-0x0000000007864000-memory.dmp

            memory/3332-22-0x00000000063E0000-0x000000000642C000-memory.dmp

            memory/3332-27-0x0000000070DF0000-0x0000000071147000-memory.dmp

            memory/3332-23-0x00000000068B0000-0x00000000068F6000-memory.dmp

            memory/3332-21-0x0000000006330000-0x000000000634E000-memory.dmp

            memory/4636-85-0x0000000006000000-0x0000000006357000-memory.dmp

            memory/4636-87-0x0000000070BE0000-0x0000000070C2C000-memory.dmp

            memory/4636-88-0x0000000070D60000-0x00000000710B7000-memory.dmp

            memory/4788-189-0x0000000000400000-0x00000000008DF000-memory.dmp

            memory/4788-185-0x0000000000400000-0x00000000008DF000-memory.dmp

            memory/4968-97-0x00000000048C0000-0x0000000004CB9000-memory.dmp

            memory/4968-178-0x0000000000400000-0x0000000000D1C000-memory.dmp

            memory/4968-1-0x00000000048C0000-0x0000000004CB9000-memory.dmp

            memory/4968-126-0x0000000000400000-0x0000000002B08000-memory.dmp

            memory/4968-98-0x0000000004CC0000-0x00000000055AB000-memory.dmp

            memory/4968-3-0x0000000000400000-0x0000000000D1C000-memory.dmp

            memory/4968-2-0x0000000004CC0000-0x00000000055AB000-memory.dmp