Analysis

  • max time kernel
    150s
  • max time network
    156s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240508-en
  • resource tags

    arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    16/05/2024, 12:25

General

  • Target

    66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe

  • Size

    4.1MB

  • MD5

    39d996857eeacf39c33ec907b00aefaf

  • SHA1

    618d7b7b56b3bc806b8e8e65dfdf82d66a216cb7

  • SHA256

    66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882

  • SHA512

    136d3e5ce2e441d3716a93b0e196ff28c1e12c2406a025219fd6af9507509c74784173807557ec1f3a3e17ad6281c4389093ec424cc0ad9f1da1cfeddb304b31

  • SSDEEP

    98304:l/lx2VB4FLDQS1OmkYbRsTncIxTvyO2P5x7YbDUU8K:VlgkYS1OmbburVLyO2P5x7Yb40

Malware Config

Signatures

  • Glupteba

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

  • Glupteba payload 17 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\66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe
    "C:\Users\Admin\AppData\Local\Temp\66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2864
    • 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:3740
    • C:\Users\Admin\AppData\Local\Temp\66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.exe
      "C:\Users\Admin\AppData\Local\Temp\66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882.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:4276
      • 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:4772
      • 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:3636
        • 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:4408
      • 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:1276
      • 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:1448
      • 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: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:3732
        • 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:2816
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:2800
          • 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:4092
          • 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:1524
          • 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:3420
          • 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:3096

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_cjojt14e.kdu.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

      7a39d6711dff4d9e78fedb5c3d1cf941

      SHA1

      aa95df82a11f1b0986e3b79516e6b629b4861ed3

      SHA256

      84efef7541870e19adc505ed561a4d3673343082ec78c84abccd74b8b93da842

      SHA512

      37e83372295383921aacf15ae990525125f527fe204d6c314e304adf135b5cb74e440598c7dcb8e0903d858c6edd17cb310dd2916bd7534062aa53453b7764fc

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

      Filesize

      19KB

      MD5

      8fc875fcbe54e786fc42890f49063455

      SHA1

      efea617f5f83aef365270fb3b1e7ed2f752ad5ef

      SHA256

      af0319c9fd9e1bc3da711c5d4ec0dc6854e3600942c0c2541f47174cddadb09d

      SHA512

      eef2cd4ffa3106948247ad48c5825535d126b3d8c25c2b2bac2d2660320d6aed88067b8f2fbbce0b3f0ab6b5effa359be9f22656b6eedb21f588d4cdea58be27

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

      Filesize

      19KB

      MD5

      9fbb7ca13f00c7cf834af14ead112aea

      SHA1

      85f90b0bc74f0b8f83d7bc3306baa8a19589202d

      SHA256

      df0f347a65ef332182c97393408f4e0ac64ff2e4c42d1b703eaec93d530b83e7

      SHA512

      b2b1766b65611c9449ca6196893df41ed02de7dc6ef3bd579b5afd789c49667138dd489859a9cdbb648938f8222f2bc412b744474eef373d8ea10d45e1c7e38a

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

      Filesize

      19KB

      MD5

      a57c6a1164ab82280671bb8b00df5534

      SHA1

      276ff3106d6456873fbbff6f2596cdbd7132a2c5

      SHA256

      f1eea7ea73157615a9b20a6b38aa44447ae83278e2a2afec89d6fbe91a2279a6

      SHA512

      001bb89e4958313317e725fec37d0f56b8823f2413e8c3c1549f70b7d9e7211144f652a5e82768720732e8be9814af50d63debbefc5ec8ab0a224eb73c578cbc

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

      Filesize

      19KB

      MD5

      d4b44d2e7192826bf5fe66af104043b8

      SHA1

      f542191ce9bdfa28eafc113503539cc29c6e02cb

      SHA256

      d8a5042812c8fa19b76cf4b6905f4f67d36140624ec5931649307bf03f1ee32e

      SHA512

      e6fef08b002fc880734a906d3543484ea621e36bba6b220ea9f7bf12053636f1d53a64a34abde2a8f6c0268088d844f04ee9abc64c036f371b8fa2a14fbb2483

    • C:\Windows\rss\csrss.exe

      Filesize

      4.1MB

      MD5

      39d996857eeacf39c33ec907b00aefaf

      SHA1

      618d7b7b56b3bc806b8e8e65dfdf82d66a216cb7

      SHA256

      66d087ead6b6dc3275d4b08726df6af1499fbf8867476667fdb62b8ecfaca882

      SHA512

      136d3e5ce2e441d3716a93b0e196ff28c1e12c2406a025219fd6af9507509c74784173807557ec1f3a3e17ad6281c4389093ec424cc0ad9f1da1cfeddb304b31

    • memory/1276-90-0x0000000070D10000-0x0000000070D5C000-memory.dmp

      Filesize

      304KB

    • memory/1276-91-0x0000000070E90000-0x00000000711E7000-memory.dmp

      Filesize

      3.3MB

    • memory/1448-111-0x0000000070E90000-0x00000000711E7000-memory.dmp

      Filesize

      3.3MB

    • memory/1448-110-0x0000000070D10000-0x0000000070D5C000-memory.dmp

      Filesize

      304KB

    • memory/1524-184-0x0000000070E40000-0x0000000071197000-memory.dmp

      Filesize

      3.3MB

    • memory/1524-183-0x0000000070C30000-0x0000000070C7C000-memory.dmp

      Filesize

      304KB

    • memory/1524-181-0x0000000006290000-0x00000000065E7000-memory.dmp

      Filesize

      3.3MB

    • memory/2472-229-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/2472-217-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/2472-234-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/2472-210-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/2472-232-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/2472-201-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/2472-213-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/2472-205-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/2472-226-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/2472-208-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/2472-220-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/2472-222-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/2864-1-0x0000000002A20000-0x0000000002E21000-memory.dmp

      Filesize

      4.0MB

    • memory/2864-75-0x0000000002A20000-0x0000000002E21000-memory.dmp

      Filesize

      4.0MB

    • memory/2864-89-0x0000000002E30000-0x000000000371B000-memory.dmp

      Filesize

      8.9MB

    • memory/2864-3-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/2864-2-0x0000000002E30000-0x000000000371B000-memory.dmp

      Filesize

      8.9MB

    • memory/2864-74-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/3732-136-0x0000000070D10000-0x0000000070D5C000-memory.dmp

      Filesize

      304KB

    • memory/3732-137-0x0000000070E90000-0x00000000711E7000-memory.dmp

      Filesize

      3.3MB

    • memory/3740-36-0x0000000006F20000-0x0000000006FC4000-memory.dmp

      Filesize

      656KB

    • memory/3740-22-0x0000000005AD0000-0x0000000005B1C000-memory.dmp

      Filesize

      304KB

    • memory/3740-4-0x0000000074AAE000-0x0000000074AAF000-memory.dmp

      Filesize

      4KB

    • memory/3740-5-0x00000000025F0000-0x0000000002626000-memory.dmp

      Filesize

      216KB

    • memory/3740-6-0x0000000074AA0000-0x0000000075251000-memory.dmp

      Filesize

      7.7MB

    • memory/3740-7-0x0000000004D90000-0x00000000053BA000-memory.dmp

      Filesize

      6.2MB

    • memory/3740-8-0x0000000074AA0000-0x0000000075251000-memory.dmp

      Filesize

      7.7MB

    • memory/3740-9-0x0000000004D00000-0x0000000004D22000-memory.dmp

      Filesize

      136KB

    • memory/3740-50-0x0000000074AA0000-0x0000000075251000-memory.dmp

      Filesize

      7.7MB

    • memory/3740-47-0x00000000071F0000-0x00000000071F8000-memory.dmp

      Filesize

      32KB

    • memory/3740-46-0x0000000007210000-0x000000000722A000-memory.dmp

      Filesize

      104KB

    • memory/3740-45-0x0000000007110000-0x0000000007125000-memory.dmp

      Filesize

      84KB

    • memory/3740-44-0x0000000007100000-0x000000000710E000-memory.dmp

      Filesize

      56KB

    • memory/3740-43-0x00000000070C0000-0x00000000070D1000-memory.dmp

      Filesize

      68KB

    • memory/3740-42-0x0000000007150000-0x00000000071E6000-memory.dmp

      Filesize

      600KB

    • memory/3740-10-0x00000000054F0000-0x0000000005556000-memory.dmp

      Filesize

      408KB

    • memory/3740-41-0x0000000007090000-0x000000000709A000-memory.dmp

      Filesize

      40KB

    • memory/3740-40-0x0000000007050000-0x000000000706A000-memory.dmp

      Filesize

      104KB

    • memory/3740-39-0x0000000007690000-0x0000000007D0A000-memory.dmp

      Filesize

      6.5MB

    • memory/3740-11-0x0000000005560000-0x00000000055C6000-memory.dmp

      Filesize

      408KB

    • memory/3740-38-0x0000000074AA0000-0x0000000075251000-memory.dmp

      Filesize

      7.7MB

    • memory/3740-20-0x00000000055D0000-0x0000000005927000-memory.dmp

      Filesize

      3.3MB

    • memory/3740-21-0x0000000005AB0000-0x0000000005ACE000-memory.dmp

      Filesize

      120KB

    • memory/3740-23-0x0000000005F80000-0x0000000005FC6000-memory.dmp

      Filesize

      280KB

    • memory/3740-26-0x0000000070E90000-0x00000000711E7000-memory.dmp

      Filesize

      3.3MB

    • memory/3740-25-0x0000000070D10000-0x0000000070D5C000-memory.dmp

      Filesize

      304KB

    • memory/3740-35-0x0000000006F00000-0x0000000006F1E000-memory.dmp

      Filesize

      120KB

    • memory/3740-24-0x0000000006EA0000-0x0000000006ED4000-memory.dmp

      Filesize

      208KB

    • memory/3740-37-0x0000000074AA0000-0x0000000075251000-memory.dmp

      Filesize

      7.7MB

    • memory/4092-158-0x0000000006260000-0x00000000062AC000-memory.dmp

      Filesize

      304KB

    • memory/4092-170-0x0000000007290000-0x00000000072A1000-memory.dmp

      Filesize

      68KB

    • memory/4092-169-0x0000000006F40000-0x0000000006FE4000-memory.dmp

      Filesize

      656KB

    • memory/4092-159-0x0000000070C30000-0x0000000070C7C000-memory.dmp

      Filesize

      304KB

    • memory/4092-171-0x00000000057B0000-0x00000000057C5000-memory.dmp

      Filesize

      84KB

    • memory/4092-156-0x0000000005880000-0x0000000005BD7000-memory.dmp

      Filesize

      3.3MB

    • memory/4092-160-0x0000000070DB0000-0x0000000071107000-memory.dmp

      Filesize

      3.3MB

    • memory/4276-202-0x0000000002A20000-0x0000000002E25000-memory.dmp

      Filesize

      4.0MB

    • memory/4276-126-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/4276-52-0x0000000002A20000-0x0000000002E25000-memory.dmp

      Filesize

      4.0MB

    • memory/4772-72-0x0000000007AD0000-0x0000000007B74000-memory.dmp

      Filesize

      656KB

    • memory/4772-61-0x0000000006360000-0x00000000066B7000-memory.dmp

      Filesize

      3.3MB

    • memory/4772-76-0x0000000007E50000-0x0000000007E65000-memory.dmp

      Filesize

      84KB

    • memory/4772-62-0x0000000070D10000-0x0000000070D5C000-memory.dmp

      Filesize

      304KB

    • memory/4772-63-0x0000000070F60000-0x00000000712B7000-memory.dmp

      Filesize

      3.3MB

    • memory/4772-73-0x0000000007E00000-0x0000000007E11000-memory.dmp

      Filesize

      68KB