Analysis

  • max time kernel
    145s
  • max time network
    147s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240426-en
  • resource tags

    arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    27-04-2024 17:19

General

  • Target

    8d5b1f026a5668acb3adb434e7e8d2a825d0e5a418741f6c94ca6d89ea1c5cca.exe

  • Size

    4.1MB

  • MD5

    e7115650bf9689f11d891fb213ed8305

  • SHA1

    7db1d50e324b18c8512276aeef00bb62863304f3

  • SHA256

    8d5b1f026a5668acb3adb434e7e8d2a825d0e5a418741f6c94ca6d89ea1c5cca

  • SHA512

    add482ec474483a488f3cbb19b911ccd7774b7cab636e10d1c10f182502fa5bd8c598778f55583ff947775881372494a88008cd246d6dac3631d432ae37f3230

  • SSDEEP

    98304:9B+pokA3uLr67t8MVyOHX+J6fh0VTXiCNKfogoP0GUbubAeB:9Bc4uLrIK0u8fYNDf0GUb+AeB

Malware Config

Signatures

  • Glupteba

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

  • Glupteba payload 16 IoCs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Executes dropped EXE 4 IoCs
  • UPX packed file 6 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 7 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.

  • 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 12 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\8d5b1f026a5668acb3adb434e7e8d2a825d0e5a418741f6c94ca6d89ea1c5cca.exe
    "C:\Users\Admin\AppData\Local\Temp\8d5b1f026a5668acb3adb434e7e8d2a825d0e5a418741f6c94ca6d89ea1c5cca.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4820
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4988
    • C:\Users\Admin\AppData\Local\Temp\8d5b1f026a5668acb3adb434e7e8d2a825d0e5a418741f6c94ca6d89ea1c5cca.exe
      "C:\Users\Admin\AppData\Local\Temp\8d5b1f026a5668acb3adb434e7e8d2a825d0e5a418741f6c94ca6d89ea1c5cca.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:248
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        3⤵
        • Drops file in System32 directory
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1172
      • 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:1988
        • 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:3672
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        3⤵
        • Drops file in System32 directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4908
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -nologo -noprofile
        3⤵
        • Drops file in System32 directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1028
      • 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:3936
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell -nologo -noprofile
          4⤵
          • Drops file in System32 directory
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4992
        • 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:4204
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:4584
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -nologo -noprofile
            4⤵
            • Drops file in System32 directory
            • Modifies data under HKEY_USERS
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3568
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -nologo -noprofile
            4⤵
            • Drops file in System32 directory
            • Modifies data under HKEY_USERS
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1700
          • 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:916
          • 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:3056
          • C:\Windows\windefender.exe
            "C:\Windows\windefender.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:2020
            • 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:440
              • 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:4720
    • C:\Windows\windefender.exe
      C:\Windows\windefender.exe
      1⤵
      • Executes dropped EXE
      • Modifies data under HKEY_USERS
      PID:4940

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1gdvgwlu.322.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe

      Filesize

      281KB

      MD5

      d98e33b66343e7c96158444127a117f6

      SHA1

      bb716c5509a2bf345c6c1152f6e3e1452d39d50d

      SHA256

      5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

      SHA512

      705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

    • C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

      Filesize

      2KB

      MD5

      d0c46cad6c0778401e21910bd6b56b70

      SHA1

      7be418951ea96326aca445b8dfe449b2bfa0dca6

      SHA256

      9600b3fdf0565ccb49e21656aa4b24d7c18f776bfd04d9ee984b134707550f02

      SHA512

      057531b468f7fbbb2175a696a8aab274dec0d17d9f71df309edcff35e064f3378050066a3df47ccd03048fac461594ec75e3d4fe64f9dd79949d129f51e02949

    • C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

      Filesize

      19KB

      MD5

      2359e487c1f35feb57115f2a06d74770

      SHA1

      65de9ee928a08ec6b27c441b4f9cd0ce1995b959

      SHA256

      2f810218f54dc920dc8fcb95e0aecf3cdf7f1e1bfa9d5720fc457e54afaceec5

      SHA512

      2e3a54bc2e172fe2f0e522c802aa8f61b05892d0b04cc0b2d0583662377154001265a802810bee8aba98025cf343c55cc267337e6ca07cb71404fe7c6f072c74

    • C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

      Filesize

      19KB

      MD5

      4c76591e7af3d535bf71a617cbf1ba5d

      SHA1

      25e74620ccb1a1b0674e166963e7db01b83b0ecd

      SHA256

      c0c1b2882ce553b0ebc9f9d051c74538955754020100fcec00445b3507e64712

      SHA512

      086692ac966a8803488e220a259e5887d57343d3488fa8221eaf0e50220e03f81084daf53cf16bf036749499cffb7b0b44581da07231856b946dec767282db6b

    • C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

      Filesize

      19KB

      MD5

      e94bae4edafa5842b3d568ca9e6c5b5c

      SHA1

      111dd233f9c091c32f39ae2bf411d287a926c476

      SHA256

      f4d97cde4c9285031a1427769583a099969ff0331889d6d983207270373a195c

      SHA512

      b78c54cd2af1c7ea4979c9173884e5ea245e8166d1e272b4cbf8026d09bc10c91040448cd174a27adc335e907447591884a974db84c5730a6ecbd7c8db6fc0a7

    • C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

      Filesize

      19KB

      MD5

      903e3e34820237e90aeb44436999b6c6

      SHA1

      bdb15b01777174ade86bb8b48764a6280bff016c

      SHA256

      936581bb5ac7affac43858d2c9eec744ff65fdbf1f27ca78f4166e23f52e7795

      SHA512

      2e296a31633dda107b4213091ea21ce849496c2e2fce72d732c7b8847c19d1297a47574f6a5d7a9ff1acf8ac1f37112b853a3236e114cce928e869ee2f31c8c5

    • C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

      Filesize

      19KB

      MD5

      b27772140cc98f0a28c7fc4d76547eaa

      SHA1

      81a34f5d88a39e11586d22259a326089ba47ac50

      SHA256

      1069278e4b4867d7c1f3c41ae0bdf6f208166328885a3b4803ccfca1dd37e81f

      SHA512

      54a4de7fc104013bcdfbfe4ef191bf48b513124c487a0b3cc077e413124652c9b4ec28ec424ff666dc864af36593d81c6ea5337aadb0d81cfbecbe84429cfce2

    • C:\Windows\rss\csrss.exe

      Filesize

      4.1MB

      MD5

      e7115650bf9689f11d891fb213ed8305

      SHA1

      7db1d50e324b18c8512276aeef00bb62863304f3

      SHA256

      8d5b1f026a5668acb3adb434e7e8d2a825d0e5a418741f6c94ca6d89ea1c5cca

      SHA512

      add482ec474483a488f3cbb19b911ccd7774b7cab636e10d1c10f182502fa5bd8c598778f55583ff947775881372494a88008cd246d6dac3631d432ae37f3230

    • C:\Windows\windefender.exe

      Filesize

      2.0MB

      MD5

      8e67f58837092385dcf01e8a2b4f5783

      SHA1

      012c49cfd8c5d06795a6f67ea2baf2a082cf8625

      SHA256

      166ddb03ff3c89bd4525ac390067e180fdd08f10fbcf4aadb0189541673c03fa

      SHA512

      40d8ae12663fc1851e171d9d86cea8bb12487b734c218d7b6f9742eb07d4ca265065cbd6d0bb908f8bda7e3d955c458dfe3fd13265bbf573b9351e0a2bf691ec

    • memory/248-127-0x0000000000400000-0x0000000002ED3000-memory.dmp

      Filesize

      42.8MB

    • memory/248-109-0x0000000000400000-0x0000000002ED3000-memory.dmp

      Filesize

      42.8MB

    • memory/1028-111-0x0000000070B80000-0x0000000070ED7000-memory.dmp

      Filesize

      3.3MB

    • memory/1028-110-0x0000000070930000-0x000000007097C000-memory.dmp

      Filesize

      304KB

    • memory/1172-75-0x0000000007650000-0x0000000007665000-memory.dmp

      Filesize

      84KB

    • memory/1172-54-0x0000000005B80000-0x0000000005ED7000-memory.dmp

      Filesize

      3.3MB

    • memory/1172-74-0x0000000007620000-0x0000000007631000-memory.dmp

      Filesize

      68KB

    • memory/1172-73-0x00000000072B0000-0x0000000007354000-memory.dmp

      Filesize

      656KB

    • memory/1172-64-0x0000000070BA0000-0x0000000070EF7000-memory.dmp

      Filesize

      3.3MB

    • memory/1172-63-0x0000000070930000-0x000000007097C000-memory.dmp

      Filesize

      304KB

    • memory/1700-187-0x0000000070850000-0x000000007089C000-memory.dmp

      Filesize

      304KB

    • memory/1700-188-0x00000000709D0000-0x0000000070D27000-memory.dmp

      Filesize

      3.3MB

    • memory/1700-185-0x0000000005770000-0x0000000005AC7000-memory.dmp

      Filesize

      3.3MB

    • memory/2020-210-0x0000000000400000-0x00000000008DF000-memory.dmp

      Filesize

      4.9MB

    • memory/2020-214-0x0000000000400000-0x00000000008DF000-memory.dmp

      Filesize

      4.9MB

    • memory/3568-173-0x0000000007990000-0x00000000079A1000-memory.dmp

      Filesize

      68KB

    • memory/3568-162-0x0000000070850000-0x000000007089C000-memory.dmp

      Filesize

      304KB

    • memory/3568-174-0x0000000005E00000-0x0000000005E15000-memory.dmp

      Filesize

      84KB

    • memory/3568-172-0x0000000007610000-0x00000000076B4000-memory.dmp

      Filesize

      656KB

    • memory/3568-163-0x00000000709F0000-0x0000000070D47000-memory.dmp

      Filesize

      3.3MB

    • memory/3568-158-0x0000000005F00000-0x0000000006257000-memory.dmp

      Filesize

      3.3MB

    • memory/3568-160-0x00000000063E0000-0x000000000642C000-memory.dmp

      Filesize

      304KB

    • memory/3936-233-0x0000000000400000-0x0000000002ED3000-memory.dmp

      Filesize

      42.8MB

    • memory/3936-205-0x0000000000400000-0x0000000002ED3000-memory.dmp

      Filesize

      42.8MB

    • memory/3936-229-0x0000000000400000-0x0000000002ED3000-memory.dmp

      Filesize

      42.8MB

    • memory/3936-237-0x0000000000400000-0x0000000002ED3000-memory.dmp

      Filesize

      42.8MB

    • memory/3936-225-0x0000000000400000-0x0000000002ED3000-memory.dmp

      Filesize

      42.8MB

    • memory/3936-221-0x0000000000400000-0x0000000002ED3000-memory.dmp

      Filesize

      42.8MB

    • memory/3936-241-0x0000000000400000-0x0000000002ED3000-memory.dmp

      Filesize

      42.8MB

    • memory/3936-217-0x0000000000400000-0x0000000002ED3000-memory.dmp

      Filesize

      42.8MB

    • memory/3936-245-0x0000000000400000-0x0000000002ED3000-memory.dmp

      Filesize

      42.8MB

    • memory/3936-175-0x0000000000400000-0x0000000002ED3000-memory.dmp

      Filesize

      42.8MB

    • memory/4820-52-0x0000000005170000-0x0000000005A5B000-memory.dmp

      Filesize

      8.9MB

    • memory/4820-3-0x0000000000400000-0x0000000002ED3000-memory.dmp

      Filesize

      42.8MB

    • memory/4820-2-0x0000000005170000-0x0000000005A5B000-memory.dmp

      Filesize

      8.9MB

    • memory/4820-1-0x00000000035C0000-0x00000000039C4000-memory.dmp

      Filesize

      4.0MB

    • memory/4820-51-0x00000000035C0000-0x00000000039C4000-memory.dmp

      Filesize

      4.0MB

    • memory/4820-50-0x0000000000400000-0x0000000002ED3000-memory.dmp

      Filesize

      42.8MB

    • memory/4908-89-0x0000000070930000-0x000000007097C000-memory.dmp

      Filesize

      304KB

    • memory/4908-90-0x0000000070B80000-0x0000000070ED7000-memory.dmp

      Filesize

      3.3MB

    • memory/4908-79-0x00000000061E0000-0x0000000006537000-memory.dmp

      Filesize

      3.3MB

    • memory/4940-212-0x0000000000400000-0x00000000008DF000-memory.dmp

      Filesize

      4.9MB

    • memory/4940-218-0x0000000000400000-0x00000000008DF000-memory.dmp

      Filesize

      4.9MB

    • memory/4940-226-0x0000000000400000-0x00000000008DF000-memory.dmp

      Filesize

      4.9MB

    • memory/4988-10-0x0000000006330000-0x0000000006396000-memory.dmp

      Filesize

      408KB

    • memory/4988-4-0x00000000053F0000-0x0000000005426000-memory.dmp

      Filesize

      216KB

    • memory/4988-43-0x0000000007F20000-0x0000000007F35000-memory.dmp

      Filesize

      84KB

    • memory/4988-44-0x0000000007F70000-0x0000000007F8A000-memory.dmp

      Filesize

      104KB

    • memory/4988-11-0x00000000063A0000-0x0000000006406000-memory.dmp

      Filesize

      408KB

    • memory/4988-20-0x0000000006490000-0x00000000067E7000-memory.dmp

      Filesize

      3.3MB

    • memory/4988-21-0x00000000068A0000-0x00000000068BE000-memory.dmp

      Filesize

      120KB

    • memory/4988-22-0x00000000068E0000-0x000000000692C000-memory.dmp

      Filesize

      304KB

    • memory/4988-23-0x0000000006E30000-0x0000000006E76000-memory.dmp

      Filesize

      280KB

    • memory/4988-9-0x0000000005A30000-0x0000000005A52000-memory.dmp

      Filesize

      136KB

    • memory/4988-8-0x0000000005B90000-0x00000000061BA000-memory.dmp

      Filesize

      6.2MB

    • memory/4988-7-0x0000000005550000-0x0000000005560000-memory.dmp

      Filesize

      64KB

    • memory/4988-6-0x0000000005550000-0x0000000005560000-memory.dmp

      Filesize

      64KB

    • memory/4988-5-0x00000000746C0000-0x0000000074E71000-memory.dmp

      Filesize

      7.7MB

    • memory/4988-24-0x0000000007CE0000-0x0000000007D14000-memory.dmp

      Filesize

      208KB

    • memory/4988-42-0x0000000007F10000-0x0000000007F1E000-memory.dmp

      Filesize

      56KB

    • memory/4988-25-0x0000000070930000-0x000000007097C000-memory.dmp

      Filesize

      304KB

    • memory/4988-26-0x0000000070AB0000-0x0000000070E07000-memory.dmp

      Filesize

      3.3MB

    • memory/4988-35-0x0000000007D20000-0x0000000007D3E000-memory.dmp

      Filesize

      120KB

    • memory/4988-36-0x0000000007D40000-0x0000000007DE4000-memory.dmp

      Filesize

      656KB

    • memory/4988-37-0x00000000084B0000-0x0000000008B2A000-memory.dmp

      Filesize

      6.5MB

    • memory/4988-38-0x0000000007E60000-0x0000000007E7A000-memory.dmp

      Filesize

      104KB

    • memory/4988-39-0x0000000007EA0000-0x0000000007EAA000-memory.dmp

      Filesize

      40KB

    • memory/4988-40-0x0000000007FB0000-0x0000000008046000-memory.dmp

      Filesize

      600KB

    • memory/4988-41-0x0000000007ED0000-0x0000000007EE1000-memory.dmp

      Filesize

      68KB

    • memory/4988-48-0x00000000746C0000-0x0000000074E71000-memory.dmp

      Filesize

      7.7MB

    • memory/4988-45-0x0000000007F90000-0x0000000007F98000-memory.dmp

      Filesize

      32KB

    • memory/4992-139-0x0000000070930000-0x000000007097C000-memory.dmp

      Filesize

      304KB

    • memory/4992-140-0x0000000070AB0000-0x0000000070E07000-memory.dmp

      Filesize

      3.3MB