Analysis

  • max time kernel
    150s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/05/2024, 12:29

General

  • Target
    b91f874bde94ea9c5a8cabefc8dfb5c57814cd97016c43cfe244cc00ac9b4157.exe
  • Size 4.1MB
  • Sample240517-ppc22shd98
  • SHA256 b91f874bde94ea9c5a8cabefc8dfb5c57814cd97016c43cfe244cc00ac9b4157
  • 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\b91f874bde94ea9c5a8cabefc8dfb5c57814cd97016c43cfe244cc00ac9b4157.exe
    "C:\Users\Admin\AppData\Local\Temp\b91f874bde94ea9c5a8cabefc8dfb5c57814cd97016c43cfe244cc00ac9b4157.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:960
    • 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:1860
    • C:\Users\Admin\AppData\Local\Temp\b91f874bde94ea9c5a8cabefc8dfb5c57814cd97016c43cfe244cc00ac9b4157.exe
      "C:\Users\Admin\AppData\Local\Temp\b91f874bde94ea9c5a8cabefc8dfb5c57814cd97016c43cfe244cc00ac9b4157.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:3100
      • 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:4528
      • 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:4508
        • 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:3940
      • 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:2216
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Modifies data under HKEY_USERS
        PID:4912
      • 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:3336
        • 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:2912
        • 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:5080
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:3332
          • 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:2364
          • 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:4700
          • 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:1100
          • 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:1092
          • C:\Windows\windefender.exe
            "C:\Windows\windefender.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:2216
            • 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:1576
              • 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:3972
    • C:\Windows\windefender.exe
      C:\Windows\windefender.exe
      1⤵
      • Executes dropped EXE
      • Modifies data under HKEY_USERS
      PID:1548

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          __PSScriptPolicyTest_jdnvh0mi.rvu.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jdnvh0mi.rvu.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 6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69
          • MD5 SHA1 SHA512

          StartupProfileData-Interactive

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
          • Size 19KB
          • SHA256 c72af76c069f7013bdc9d6440c5665fbc3ec3ac7e0893fcb99ea14c6222524ee
          • MD5 SHA1 SHA512 SSDEEP

          StartupProfileData-Interactive

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
          • Size 19KB
          • SHA256 4a85ad23f84ada132abae365eb47b74d48cd204b6174fb0beec149b5ba3e874b
          • MD5 SHA1 SHA512 SSDEEP

          StartupProfileData-Interactive

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
          • Size 19KB
          • SHA256 b2836e2639cbf2f969eeeecdc452ce9689ff739d4c684126e5c70f58faae3ebc
          • MD5 SHA1 SHA512 SSDEEP

          StartupProfileData-Interactive

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
          • Size 19KB
          • SHA256 7bb035edf5b00a43a37a278a170d6a2d84e698b81ba6d372254660b424b77bcd
          • MD5 SHA1 SHA512 SSDEEP

          csrss.exe

          • Path C:\Windows\rss\csrss.exe
          • Size 4.1MB
          • SHA256 b91f874bde94ea9c5a8cabefc8dfb5c57814cd97016c43cfe244cc00ac9b4157
          • MD5 SHA1 SHA512 SSDEEP

          windefender.exe

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

          memory/960-2-0x0000000004C10000-0x00000000054FB000-memory.dmp

          memory/960-3-0x0000000000400000-0x0000000000D1C000-memory.dmp

          memory/960-1-0x0000000004810000-0x0000000004C0F000-memory.dmp

          memory/960-4-0x0000000000400000-0x0000000002B0D000-memory.dmp

          memory/960-57-0x0000000004810000-0x0000000004C0F000-memory.dmp

          memory/960-70-0x0000000000400000-0x0000000000D1C000-memory.dmp

          memory/960-56-0x0000000000400000-0x0000000002B0D000-memory.dmp

          memory/960-58-0x0000000004C10000-0x00000000054FB000-memory.dmp

          memory/1548-213-0x0000000000400000-0x00000000008DF000-memory.dmp

          memory/1548-219-0x0000000000400000-0x00000000008DF000-memory.dmp

          memory/1548-227-0x0000000000400000-0x00000000008DF000-memory.dmp

          memory/1548-239-0x0000000000400000-0x00000000008DF000-memory.dmp

          memory/1860-23-0x0000000006900000-0x000000000691E000-memory.dmp

          memory/1860-27-0x0000000008330000-0x00000000089AA000-memory.dmp

          memory/1860-31-0x00000000708F0000-0x0000000070C44000-memory.dmp

          memory/1860-42-0x0000000007ED0000-0x0000000007EEE000-memory.dmp

          memory/1860-43-0x0000000007EF0000-0x0000000007F93000-memory.dmp

          memory/1860-44-0x00000000744A0000-0x0000000074C50000-memory.dmp

          memory/1860-45-0x0000000008000000-0x000000000800A000-memory.dmp

          memory/1860-46-0x00000000080C0000-0x0000000008156000-memory.dmp

          memory/1860-47-0x0000000008020000-0x0000000008031000-memory.dmp

          memory/1860-48-0x0000000008060000-0x000000000806E000-memory.dmp

          memory/1860-49-0x0000000008070000-0x0000000008084000-memory.dmp

          memory/1860-50-0x0000000008160000-0x000000000817A000-memory.dmp

          memory/1860-51-0x00000000080B0000-0x00000000080B8000-memory.dmp

          memory/1860-54-0x00000000744A0000-0x0000000074C50000-memory.dmp

          memory/1860-30-0x0000000070340000-0x000000007038C000-memory.dmp

          memory/1860-29-0x0000000007E90000-0x0000000007EC2000-memory.dmp

          memory/1860-28-0x0000000007CD0000-0x0000000007CEA000-memory.dmp

          memory/1860-32-0x00000000744A0000-0x0000000074C50000-memory.dmp

          memory/1860-26-0x0000000007C30000-0x0000000007CA6000-memory.dmp

          memory/1860-25-0x0000000006E80000-0x0000000006EC4000-memory.dmp

          memory/1860-24-0x0000000006940000-0x000000000698C000-memory.dmp

          memory/1860-5-0x0000000005330000-0x0000000005366000-memory.dmp

          memory/1860-22-0x0000000006330000-0x0000000006684000-memory.dmp

          memory/1860-6-0x00000000744AE000-0x00000000744AF000-memory.dmp

          memory/1860-11-0x0000000006250000-0x00000000062B6000-memory.dmp

          memory/1860-12-0x00000000062C0000-0x0000000006326000-memory.dmp

          memory/1860-7-0x0000000005B20000-0x0000000006148000-memory.dmp

          memory/1860-10-0x0000000005930000-0x0000000005952000-memory.dmp

          memory/1860-8-0x00000000744A0000-0x0000000074C50000-memory.dmp

          memory/1860-9-0x00000000744A0000-0x0000000074C50000-memory.dmp

          memory/2216-101-0x0000000070AC0000-0x0000000070E14000-memory.dmp

          memory/2216-100-0x0000000070340000-0x000000007038C000-memory.dmp

          memory/2216-94-0x0000000005F80000-0x00000000062D4000-memory.dmp

          memory/2216-210-0x0000000000400000-0x00000000008DF000-memory.dmp

          memory/2216-215-0x0000000000400000-0x00000000008DF000-memory.dmp

          memory/2364-167-0x00000000072E0000-0x0000000007383000-memory.dmp

          memory/2364-150-0x00000000059A0000-0x0000000005CF4000-memory.dmp

          memory/2364-155-0x0000000006590000-0x00000000065DC000-memory.dmp

          memory/2364-156-0x0000000070260000-0x00000000702AC000-memory.dmp

          memory/2364-157-0x00000000709F0000-0x0000000070D44000-memory.dmp

          memory/2364-168-0x0000000005E60000-0x0000000005E71000-memory.dmp

          memory/2364-169-0x0000000005EB0000-0x0000000005EC4000-memory.dmp

          memory/2912-130-0x0000000070AC0000-0x0000000070E14000-memory.dmp

          memory/2912-129-0x0000000070340000-0x000000007038C000-memory.dmp

          memory/3100-112-0x0000000000400000-0x0000000002B0D000-memory.dmp

          memory/3100-141-0x0000000000400000-0x0000000002B0D000-memory.dmp

          memory/3100-69-0x0000000000400000-0x0000000002B0D000-memory.dmp

          memory/3336-203-0x0000000000400000-0x0000000002B0D000-memory.dmp

          memory/3336-222-0x0000000000400000-0x0000000002B0D000-memory.dmp

          memory/3336-200-0x0000000000400000-0x0000000002B0D000-memory.dmp

          memory/3336-142-0x0000000000400000-0x0000000002B0D000-memory.dmp

          memory/3336-206-0x0000000000400000-0x0000000002B0D000-memory.dmp

          memory/3336-238-0x0000000000400000-0x0000000002B0D000-memory.dmp

          memory/3336-234-0x0000000000400000-0x0000000002B0D000-memory.dmp

          memory/3336-230-0x0000000000400000-0x0000000002B0D000-memory.dmp

          memory/3336-226-0x0000000000400000-0x0000000002B0D000-memory.dmp

          memory/3336-218-0x0000000000400000-0x0000000002B0D000-memory.dmp

          memory/4528-84-0x0000000007A20000-0x0000000007A34000-memory.dmp

          memory/4528-72-0x0000000070AF0000-0x0000000070E44000-memory.dmp

          memory/4528-71-0x0000000070340000-0x000000007038C000-memory.dmp

          memory/4528-82-0x00000000076B0000-0x0000000007753000-memory.dmp

          memory/4528-83-0x00000000079D0000-0x00000000079E1000-memory.dmp

          memory/4528-68-0x0000000005F10000-0x0000000006264000-memory.dmp

          memory/4700-181-0x0000000070260000-0x00000000702AC000-memory.dmp

          memory/4700-182-0x00000000709F0000-0x0000000070D44000-memory.dmp