Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240419-en
  • resource tags

    arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    19/05/2024, 01:44

General

  • Target
    67b595936ebad8eb78d8562951b9b3a32a921d98350a76cb8754c4a08b42dd6a.exe
  • Size 4.1MB
  • Sample240519-b5636sca2y
  • SHA256 67b595936ebad8eb78d8562951b9b3a32a921d98350a76cb8754c4a08b42dd6a
  • 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 5 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\67b595936ebad8eb78d8562951b9b3a32a921d98350a76cb8754c4a08b42dd6a.exe
    "C:\Users\Admin\AppData\Local\Temp\67b595936ebad8eb78d8562951b9b3a32a921d98350a76cb8754c4a08b42dd6a.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4784
    • 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:772
    • C:\Users\Admin\AppData\Local\Temp\67b595936ebad8eb78d8562951b9b3a32a921d98350a76cb8754c4a08b42dd6a.exe
      "C:\Users\Admin\AppData\Local\Temp\67b595936ebad8eb78d8562951b9b3a32a921d98350a76cb8754c4a08b42dd6a.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:1148
      • 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:5036
      • 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:4772
        • 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:1496
      • 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:3892
      • 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:3796
      • 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:1844
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell -nologo -noprofile
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Modifies data under HKEY_USERS
          PID:3016
        • 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:4936
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:3144
          • 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:4976
          • 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:4616
          • 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:3520
          • 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:4208
          • C:\Windows\windefender.exe
            "C:\Windows\windefender.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:1492
            • 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:4488
              • 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:484
    • C:\Windows\windefender.exe
      C:\Windows\windefender.exe
      1⤵
      • Executes dropped EXE
      • Modifies data under HKEY_USERS
      PID:224

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          __PSScriptPolicyTest_cgq0kfyk.gvj.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_cgq0kfyk.gvj.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 e39062a62c3c7617feeeff95ea8a0be51104a0d36f46e44eea22556fda74d8d9
          • MD5 SHA1 SHA512

          StartupProfileData-Interactive

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
          • Size 19KB
          • SHA256 b62904010a192ccdb34de7ccca330ff433f0b58017663693bfd2e1d73f8f3340
          • MD5 SHA1 SHA512 SSDEEP

          StartupProfileData-Interactive

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
          • Size 19KB
          • SHA256 2ae36bb8c8fcb0a9dac1abbb19c657dacdc3be0d03c67e2d132f38888d9aa679
          • MD5 SHA1 SHA512 SSDEEP

          StartupProfileData-Interactive

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
          • Size 19KB
          • SHA256 c77ddaf2165ef20a7b17ae6a9f7ddbac470dd9c152a61498328551d99ee632bb
          • MD5 SHA1 SHA512 SSDEEP

          StartupProfileData-Interactive

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
          • Size 19KB
          • SHA256 4653253b51ca4ca91b65b0a669312e1edac7d9eb447eae0e6e7768f3b24a435b
          • MD5 SHA1 SHA512 SSDEEP

          csrss.exe

          • Path C:\Windows\rss\csrss.exe
          • Size 4.1MB
          • SHA256 67b595936ebad8eb78d8562951b9b3a32a921d98350a76cb8754c4a08b42dd6a
          • MD5 SHA1 SHA512 SSDEEP

          windefender.exe

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

          memory/224-191-0x0000000000400000-0x00000000008DF000-memory.dmp

          memory/224-196-0x0000000000400000-0x00000000008DF000-memory.dmp

          memory/772-46-0x0000000007810000-0x000000000782A000-memory.dmp

          memory/772-42-0x0000000007850000-0x00000000078E6000-memory.dmp

          memory/772-21-0x0000000006110000-0x000000000612E000-memory.dmp

          memory/772-22-0x0000000006160000-0x00000000061AC000-memory.dmp

          memory/772-23-0x0000000006680000-0x00000000066C6000-memory.dmp

          memory/772-25-0x00000000746D0000-0x0000000074E81000-memory.dmp

          memory/772-36-0x0000000007590000-0x00000000075AE000-memory.dmp

          memory/772-27-0x0000000070AC0000-0x0000000070E17000-memory.dmp

          memory/772-26-0x0000000070940000-0x000000007098C000-memory.dmp

          memory/772-24-0x0000000007530000-0x0000000007564000-memory.dmp

          memory/772-38-0x00000000746D0000-0x0000000074E81000-memory.dmp

          memory/772-37-0x00000000075B0000-0x0000000007654000-memory.dmp

          memory/772-39-0x0000000007D20000-0x000000000839A000-memory.dmp

          memory/772-40-0x0000000004FD0000-0x0000000004FEA000-memory.dmp

          memory/772-41-0x0000000007740000-0x000000000774A000-memory.dmp

          memory/772-9-0x0000000005290000-0x00000000052B2000-memory.dmp

          memory/772-43-0x0000000007760000-0x0000000007771000-memory.dmp

          memory/772-44-0x00000000077B0000-0x00000000077BE000-memory.dmp

          memory/772-45-0x00000000077C0000-0x00000000077D5000-memory.dmp

          memory/772-11-0x0000000005C00000-0x0000000005C66000-memory.dmp

          memory/772-47-0x0000000007830000-0x0000000007838000-memory.dmp

          memory/772-50-0x00000000746D0000-0x0000000074E81000-memory.dmp

          memory/772-4-0x00000000746DE000-0x00000000746DF000-memory.dmp

          memory/772-5-0x0000000002C60000-0x0000000002C96000-memory.dmp

          memory/772-20-0x0000000005C70000-0x0000000005FC7000-memory.dmp

          memory/772-6-0x00000000054F0000-0x0000000005B1A000-memory.dmp

          memory/772-7-0x00000000746D0000-0x0000000074E81000-memory.dmp

          memory/772-8-0x00000000746D0000-0x0000000074E81000-memory.dmp

          memory/772-10-0x0000000005B90000-0x0000000005BF6000-memory.dmp

          memory/1148-110-0x0000000000400000-0x0000000002732000-memory.dmp

          memory/1148-178-0x0000000000400000-0x0000000002732000-memory.dmp

          memory/1492-183-0x0000000000400000-0x00000000008DF000-memory.dmp

          memory/1492-187-0x0000000000400000-0x00000000008DF000-memory.dmp

          memory/1844-204-0x0000000000400000-0x0000000002732000-memory.dmp

          memory/1844-219-0x0000000000400000-0x0000000002732000-memory.dmp

          memory/1844-201-0x0000000000400000-0x0000000002732000-memory.dmp

          memory/1844-216-0x0000000000400000-0x0000000002732000-memory.dmp

          memory/1844-207-0x0000000000400000-0x0000000002732000-memory.dmp

          memory/1844-192-0x0000000000400000-0x0000000002732000-memory.dmp

          memory/1844-179-0x0000000000400000-0x0000000002732000-memory.dmp

          memory/1844-210-0x0000000000400000-0x0000000002732000-memory.dmp

          memory/1844-213-0x0000000000400000-0x0000000002732000-memory.dmp

          memory/1844-189-0x0000000000400000-0x0000000002732000-memory.dmp

          memory/1844-198-0x0000000000400000-0x0000000002732000-memory.dmp

          memory/1844-195-0x0000000000400000-0x0000000002732000-memory.dmp

          memory/3796-111-0x0000000070A50000-0x0000000070A9C000-memory.dmp

          memory/3796-112-0x0000000070BD0000-0x0000000070F27000-memory.dmp

          memory/3892-91-0x0000000070BD0000-0x0000000070F27000-memory.dmp

          memory/3892-90-0x0000000070A50000-0x0000000070A9C000-memory.dmp

          memory/4616-157-0x0000000006030000-0x0000000006387000-memory.dmp

          memory/4616-162-0x00000000708D0000-0x000000007091C000-memory.dmp

          memory/4616-163-0x0000000070AE0000-0x0000000070E37000-memory.dmp

          memory/4784-1-0x00000000046A0000-0x0000000004AA7000-memory.dmp

          memory/4784-54-0x0000000004AB0000-0x000000000539B000-memory.dmp

          memory/4784-53-0x0000000000400000-0x0000000000D1C000-memory.dmp

          memory/4784-3-0x0000000000400000-0x0000000000D1C000-memory.dmp

          memory/4784-51-0x0000000000400000-0x0000000002732000-memory.dmp

          memory/4784-2-0x0000000004AB0000-0x000000000539B000-memory.dmp

          memory/4976-138-0x00000000708D0000-0x000000007091C000-memory.dmp

          memory/4976-135-0x00000000063F0000-0x0000000006747000-memory.dmp

          memory/4976-137-0x00000000069A0000-0x00000000069EC000-memory.dmp

          memory/4976-139-0x0000000070A50000-0x0000000070DA7000-memory.dmp

          memory/4976-148-0x0000000007B90000-0x0000000007C34000-memory.dmp

          memory/4976-149-0x0000000007EC0000-0x0000000007ED1000-memory.dmp

          memory/4976-150-0x0000000006350000-0x0000000006365000-memory.dmp

          memory/5036-77-0x0000000007670000-0x0000000007685000-memory.dmp

          memory/5036-63-0x0000000005D70000-0x00000000060C7000-memory.dmp

          memory/5036-64-0x0000000006120000-0x000000000616C000-memory.dmp

          memory/5036-66-0x0000000070BD0000-0x0000000070F27000-memory.dmp

          memory/5036-65-0x0000000070A50000-0x0000000070A9C000-memory.dmp

          memory/5036-75-0x00000000072F0000-0x0000000007394000-memory.dmp

          memory/5036-76-0x0000000007620000-0x0000000007631000-memory.dmp