Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240426-en
  • resource tags

    arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    19-05-2024 21:52

General

  • Target

    34877ab10419ca3f26a8fb29e8e7c0992ac56ce72bfb91980924c582b32bb020.exe

  • Size

    4.1MB

  • MD5

    b9c066bfd5930f01490b888a93cda864

  • SHA1

    7ba8f12c7cf394d9822086afb05c2d8ca59bc4d6

  • SHA256

    34877ab10419ca3f26a8fb29e8e7c0992ac56ce72bfb91980924c582b32bb020

  • SHA512

    874beda4f139173dcbfcdf5a0ad42da6452a493423b6c1d4a6d1851bcc01e75068db4e3598e15b4f3b15f40618171a4808cc42592e00e31f7ea2a979f3386fc2

  • SSDEEP

    98304:0X33DbWGkLHuFK+TwQmBC6reQ4TTNXYvI8KgvjrB0ra:0XPWAwQyCdJYw8Kgga

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 2 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 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 2 IoCs
  • 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 10 IoCs
  • Suspicious use of WriteProcessMemory 30 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\34877ab10419ca3f26a8fb29e8e7c0992ac56ce72bfb91980924c582b32bb020.exe
    "C:\Users\Admin\AppData\Local\Temp\34877ab10419ca3f26a8fb29e8e7c0992ac56ce72bfb91980924c582b32bb020.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3688
    • 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:3352
    • C:\Users\Admin\AppData\Local\Temp\34877ab10419ca3f26a8fb29e8e7c0992ac56ce72bfb91980924c582b32bb020.exe
      "C:\Users\Admin\AppData\Local\Temp\34877ab10419ca3f26a8fb29e8e7c0992ac56ce72bfb91980924c582b32bb020.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:4620
      • 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:3124
      • 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:1408
        • 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:1064
      • 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:2264
      • 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:2572
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Manipulates WinMonFS driver.
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1232
        • 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:1588
        • 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:3988
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:4536
          • 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:1452
          • 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:2952
          • 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:2880
          • 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:3972

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_cxi2jkbv.hp2.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

      d28c89dbe83c691bc0c6dbe6b1dd6064

      SHA1

      6e41c258e081aa21fee6c2d0ee14e561cf81e4fb

      SHA256

      6f6e85c4a7348c5c4fda6c461e57867ecd7e2946f78c755c470dd43d89d8cea6

      SHA512

      6d32a1712dfc277f1670f2bc99e8bd7d3a1f593b1bcf5d33c5b1fd5650201e75dab9fa353b1a8a8377c7e18b187c129e8837c8861bd889e8537a807454cf9cf9

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

      Filesize

      19KB

      MD5

      6a698da96d0ab0c226b4b5cc23fe1cd4

      SHA1

      9821867ac76da76f7a9b4f77c9cab4a9d1c365e6

      SHA256

      b29339f7330d372707d94fc19e379515943d6ffbb4168118967ee9ac4c5984da

      SHA512

      af43cf1149ce435112027e4d2af5b86ae1a7ebf04c64305887eeb4ce47cf9c070729f61e490911403233db38e786747dfffcf6d99a01b7cb923de4c96727e81c

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

      Filesize

      19KB

      MD5

      6c23b889eaba7f85fd0c121bd90365cc

      SHA1

      99122f6cb885026d699f44bf8aa9a09f1241aedd

      SHA256

      e5b4eb2d915434e98f25785158eb7ef226773919eabc9f5f06c0d7aebf35358e

      SHA512

      98384e18f0aed536477366557360e7ff0d5a18de3e99fb0d5215fb60e9895c3b37fb26b106338bb27fe40af32b0071a9505805776b4030109c819ecd2ab9f467

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

      Filesize

      19KB

      MD5

      0587802ea3c8f037f7e4fcf0c72c4c00

      SHA1

      db19157d4a9c68e834149d17ca191c22561085c5

      SHA256

      b3f15a0bf44e34e09ea419ffa0c997a3358d98e88ffc015a1cd7fcd80accde03

      SHA512

      27ea56f1efabf892a34408a7a28456363827ae081ea119dc7b378d37b0e51390f352ee969366db208c165b2faaf1bcd1e378bc3f69b571d94fb4384d91bfd789

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

      Filesize

      19KB

      MD5

      4cdeda8ec3eab131efbafd12426b0dcc

      SHA1

      5309594694288cfcf389d3c4d196e22604b154cc

      SHA256

      0bdc958d7947491ea2236697cb4cb5b9457b90f2f3c4b0a015321035ccb4d3b9

      SHA512

      ef82a68a16f98d09fc0ad75b2e61bd4f15ee9c7f1de615052cc28c39d9c07eae68d0faab459c03a595467d21168a8600bb01dfdb990a6e279108101dac0f00a1

    • C:\Windows\rss\csrss.exe

      Filesize

      4.1MB

      MD5

      b9c066bfd5930f01490b888a93cda864

      SHA1

      7ba8f12c7cf394d9822086afb05c2d8ca59bc4d6

      SHA256

      34877ab10419ca3f26a8fb29e8e7c0992ac56ce72bfb91980924c582b32bb020

      SHA512

      874beda4f139173dcbfcdf5a0ad42da6452a493423b6c1d4a6d1851bcc01e75068db4e3598e15b4f3b15f40618171a4808cc42592e00e31f7ea2a979f3386fc2

    • memory/1232-223-0x0000000000400000-0x0000000002733000-memory.dmp

      Filesize

      35.2MB

    • memory/1232-208-0x0000000000400000-0x0000000002733000-memory.dmp

      Filesize

      35.2MB

    • memory/1232-211-0x0000000000400000-0x0000000002733000-memory.dmp

      Filesize

      35.2MB

    • memory/1232-204-0x0000000000400000-0x0000000002733000-memory.dmp

      Filesize

      35.2MB

    • memory/1232-202-0x0000000000400000-0x0000000002733000-memory.dmp

      Filesize

      35.2MB

    • memory/1232-214-0x0000000000400000-0x0000000002733000-memory.dmp

      Filesize

      35.2MB

    • memory/1232-217-0x0000000000400000-0x0000000002733000-memory.dmp

      Filesize

      35.2MB

    • memory/1232-219-0x0000000000400000-0x0000000002733000-memory.dmp

      Filesize

      35.2MB

    • memory/1232-226-0x0000000000400000-0x0000000002733000-memory.dmp

      Filesize

      35.2MB

    • memory/1232-229-0x0000000000400000-0x0000000002733000-memory.dmp

      Filesize

      35.2MB

    • memory/1232-232-0x0000000000400000-0x0000000002733000-memory.dmp

      Filesize

      35.2MB

    • memory/1232-234-0x0000000000400000-0x0000000002733000-memory.dmp

      Filesize

      35.2MB

    • memory/1452-160-0x0000000070870000-0x00000000708BC000-memory.dmp

      Filesize

      304KB

    • memory/1452-161-0x00000000709F0000-0x0000000070D47000-memory.dmp

      Filesize

      3.3MB

    • memory/1452-159-0x0000000006AD0000-0x0000000006B1C000-memory.dmp

      Filesize

      304KB

    • memory/1452-171-0x0000000007AA0000-0x0000000007AB1000-memory.dmp

      Filesize

      68KB

    • memory/1452-157-0x0000000005FB0000-0x0000000006307000-memory.dmp

      Filesize

      3.3MB

    • memory/1452-172-0x0000000006330000-0x0000000006345000-memory.dmp

      Filesize

      84KB

    • memory/1452-170-0x0000000007770000-0x0000000007814000-memory.dmp

      Filesize

      656KB

    • memory/1588-138-0x0000000070BA0000-0x0000000070EF7000-memory.dmp

      Filesize

      3.3MB

    • memory/1588-137-0x0000000070950000-0x000000007099C000-memory.dmp

      Filesize

      304KB

    • memory/2264-91-0x0000000070AD0000-0x0000000070E27000-memory.dmp

      Filesize

      3.3MB

    • memory/2264-88-0x0000000005ED0000-0x0000000006227000-memory.dmp

      Filesize

      3.3MB

    • memory/2264-90-0x0000000070950000-0x000000007099C000-memory.dmp

      Filesize

      304KB

    • memory/2572-111-0x0000000070950000-0x000000007099C000-memory.dmp

      Filesize

      304KB

    • memory/2572-112-0x0000000070AD0000-0x0000000070E27000-memory.dmp

      Filesize

      3.3MB

    • memory/2952-184-0x0000000070870000-0x00000000708BC000-memory.dmp

      Filesize

      304KB

    • memory/2952-185-0x0000000070A10000-0x0000000070D67000-memory.dmp

      Filesize

      3.3MB

    • memory/2952-182-0x00000000059A0000-0x0000000005CF7000-memory.dmp

      Filesize

      3.3MB

    • memory/3124-61-0x0000000070950000-0x000000007099C000-memory.dmp

      Filesize

      304KB

    • memory/3124-62-0x0000000070BA0000-0x0000000070EF7000-memory.dmp

      Filesize

      3.3MB

    • memory/3124-71-0x0000000006DF0000-0x0000000006E94000-memory.dmp

      Filesize

      656KB

    • memory/3124-72-0x0000000007140000-0x0000000007151000-memory.dmp

      Filesize

      68KB

    • memory/3124-52-0x0000000005700000-0x0000000005A57000-memory.dmp

      Filesize

      3.3MB

    • memory/3124-76-0x0000000007190000-0x00000000071A5000-memory.dmp

      Filesize

      84KB

    • memory/3352-26-0x00000000746E0000-0x0000000074E91000-memory.dmp

      Filesize

      7.7MB

    • memory/3352-36-0x0000000007500000-0x000000000751E000-memory.dmp

      Filesize

      120KB

    • memory/3352-4-0x00000000746EE000-0x00000000746EF000-memory.dmp

      Filesize

      4KB

    • memory/3352-5-0x0000000002BD0000-0x0000000002C06000-memory.dmp

      Filesize

      216KB

    • memory/3352-6-0x00000000746E0000-0x0000000074E91000-memory.dmp

      Filesize

      7.7MB

    • memory/3352-50-0x00000000746E0000-0x0000000074E91000-memory.dmp

      Filesize

      7.7MB

    • memory/3352-47-0x0000000007780000-0x0000000007788000-memory.dmp

      Filesize

      32KB

    • memory/3352-7-0x00000000054A0000-0x0000000005ACA000-memory.dmp

      Filesize

      6.2MB

    • memory/3352-46-0x0000000007760000-0x000000000777A000-memory.dmp

      Filesize

      104KB

    • memory/3352-45-0x0000000007710000-0x0000000007725000-memory.dmp

      Filesize

      84KB

    • memory/3352-44-0x0000000007700000-0x000000000770E000-memory.dmp

      Filesize

      56KB

    • memory/3352-43-0x00000000076B0000-0x00000000076C1000-memory.dmp

      Filesize

      68KB

    • memory/3352-42-0x00000000077A0000-0x0000000007836000-memory.dmp

      Filesize

      600KB

    • memory/3352-41-0x0000000007690000-0x000000000769A000-memory.dmp

      Filesize

      40KB

    • memory/3352-40-0x0000000007650000-0x000000000766A000-memory.dmp

      Filesize

      104KB

    • memory/3352-39-0x0000000007C90000-0x000000000830A000-memory.dmp

      Filesize

      6.5MB

    • memory/3352-38-0x00000000746E0000-0x0000000074E91000-memory.dmp

      Filesize

      7.7MB

    • memory/3352-37-0x0000000007520000-0x00000000075C4000-memory.dmp

      Filesize

      656KB

    • memory/3352-8-0x00000000746E0000-0x0000000074E91000-memory.dmp

      Filesize

      7.7MB

    • memory/3352-10-0x0000000005AD0000-0x0000000005B36000-memory.dmp

      Filesize

      408KB

    • memory/3352-27-0x0000000070B60000-0x0000000070EB7000-memory.dmp

      Filesize

      3.3MB

    • memory/3352-24-0x00000000074A0000-0x00000000074D4000-memory.dmp

      Filesize

      208KB

    • memory/3352-25-0x0000000070950000-0x000000007099C000-memory.dmp

      Filesize

      304KB

    • memory/3352-23-0x00000000065F0000-0x0000000006636000-memory.dmp

      Filesize

      280KB

    • memory/3352-22-0x0000000006140000-0x000000000618C000-memory.dmp

      Filesize

      304KB

    • memory/3352-11-0x0000000005BB0000-0x0000000005C16000-memory.dmp

      Filesize

      408KB

    • memory/3352-21-0x0000000006090000-0x00000000060AE000-memory.dmp

      Filesize

      120KB

    • memory/3352-20-0x0000000005C20000-0x0000000005F77000-memory.dmp

      Filesize

      3.3MB

    • memory/3352-9-0x00000000053E0000-0x0000000005402000-memory.dmp

      Filesize

      136KB

    • memory/3688-73-0x0000000000400000-0x0000000002733000-memory.dmp

      Filesize

      35.2MB

    • memory/3688-1-0x0000000004580000-0x0000000004985000-memory.dmp

      Filesize

      4.0MB

    • memory/3688-110-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/3688-74-0x0000000004580000-0x0000000004985000-memory.dmp

      Filesize

      4.0MB

    • memory/3688-75-0x0000000004990000-0x000000000527B000-memory.dmp

      Filesize

      8.9MB

    • memory/3688-3-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/3688-2-0x0000000004990000-0x000000000527B000-memory.dmp

      Filesize

      8.9MB

    • memory/4620-195-0x0000000000400000-0x0000000002733000-memory.dmp

      Filesize

      35.2MB

    • memory/4620-121-0x0000000000400000-0x0000000002733000-memory.dmp

      Filesize

      35.2MB