Analysis

  • max time kernel
    37s
  • max time network
    132s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240419-en
  • resource tags

    arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    16-05-2024 04:25

General

  • Target

    f3e6369b79f26a63c22b033973a2964715862a2b3706d4bd063f6d93534c23a8.exe

  • Size

    4.1MB

  • MD5

    d7d147cfa65fd2d6347d667ca24ee34a

  • SHA1

    0534a2c89750d3d1ba3620cba6bf0b2bbae69215

  • SHA256

    f3e6369b79f26a63c22b033973a2964715862a2b3706d4bd063f6d93534c23a8

  • SHA512

    faecf35812edf851110b9f7f2710437460d8173187342a5437d752ce690798c55b21689bd6d67c7dc1bb26a0d3cb20350e077a11ea57b7f7f6fed2213d7868e4

  • SSDEEP

    98304:J96GAmuNBigEkoqfZTwC6uGlBZNljS4jc9:JI9hoq9wC6uGlB/xg9

Malware Config

Signatures

  • Glupteba

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

  • Glupteba payload 6 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 44 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\f3e6369b79f26a63c22b033973a2964715862a2b3706d4bd063f6d93534c23a8.exe
    "C:\Users\Admin\AppData\Local\Temp\f3e6369b79f26a63c22b033973a2964715862a2b3706d4bd063f6d93534c23a8.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2488
    • 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:3212
    • C:\Users\Admin\AppData\Local\Temp\f3e6369b79f26a63c22b033973a2964715862a2b3706d4bd063f6d93534c23a8.exe
      "C:\Users\Admin\AppData\Local\Temp\f3e6369b79f26a63c22b033973a2964715862a2b3706d4bd063f6d93534c23a8.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:5012
      • 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:4044
      • 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:2828
        • 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:3748
      • 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:4844
      • 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:3008
      • 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:3096
        • 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:976
        • 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:4564
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:800
          • 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:3380
          • 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:1832
          • 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:4812
          • 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:2612

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fa5nlp0o.yst.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

      ac4917a885cf6050b1a483e4bc4d2ea5

      SHA1

      b1c0a9f27bd21c6bbb8e9be70db8777b4a2a640f

      SHA256

      e39062a62c3c7617feeeff95ea8a0be51104a0d36f46e44eea22556fda74d8d9

      SHA512

      092c67a3ecae1d187cad72a8ea1ea37cb78a0cf79c2cd7fb88953e5990669a2e871267015762fd46d274badb88ac0c1d73b00f1df7394d89bed48a3a45c2ba3d

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

      Filesize

      19KB

      MD5

      d0355e150e7c41ee9e8fe023102cd3ac

      SHA1

      856e69a43816a09c65fbe9f62128207bd5249248

      SHA256

      88975977633905ee886472e31978c58e3d5ebde3bfb6c6f4ab2308fc569ea5d1

      SHA512

      ba78a77fa23939493064e4d48dc6868325d52ba3db684d036e521887256aff5aed7ff0a175acb9b79530e3ff481e4f7666d8916b32157f3fbee7897ae6de28d6

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

      Filesize

      19KB

      MD5

      fab58d54d947b656e3a03706b23e788d

      SHA1

      73bdc4d2ce84dd22436be5f6b2bb0d9a15454d35

      SHA256

      437d3f04320ca1f84ca037f49d592bf9ec74d191be136a2a1cef88a273d5ff56

      SHA512

      cc9fa3cdd6021e79654312312dc80e29e7248738c99a83d6fee114777a4d86ed1d11b026266f0b1d5ebdb82d95084b1b28ee8bdc5e4fb53a786bd29ba3f5377e

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

      Filesize

      19KB

      MD5

      66c31d8737c49628aa28b8cb33c571c2

      SHA1

      b05fa7ad0e5a5d2dc2911f56effab42c04ab4909

      SHA256

      c5f368ff5c409180a1e6a51bec96814a08b1e3d9b759443e49b23809c910c3f2

      SHA512

      4bb4bbfa295fa31fb60a3890cfdfe1e77708f0235491c8395fe11f250f5d29cbdd4a9211171e965899b7504b1d96b790984e2ddfb6a388257d27a007e8ec6806

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

      Filesize

      19KB

      MD5

      74323f6809df9a54db624a1b8e5c9f07

      SHA1

      1f144e5da1dd599986b3fbc7c7135d28c4bf51f1

      SHA256

      0e0aea2f71008d411d0b738511cd43303598459c0a70a91288db968e8b78ffc1

      SHA512

      6bef8b0d689eadbc3fc98b4011df67eca723549be324f5bfd7b53e519a5d2650d7a5b91040bd67de6736cca0f67a3dda9155d6077d55011dd670dbcef678d44e

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

      Filesize

      19KB

      MD5

      e0f73bcb0bf0a808a1c52fe62e4d1c08

      SHA1

      5443ff1da2829cf9bf270a1e423649ef0f507a53

      SHA256

      f40d5a53f29e1d300e334f05bb18e6279aa1cb8dbb53f9f11e9991c9ac179a4e

      SHA512

      a95b22bacfd0ee8ee2d81c492258a0e00bbb0b5ae6cd8206d5100f195ba344b7d3c04f2bc1e725e18e9bb0692db42936b980bdbb2bffa7cb8ab8761b475e886b

    • C:\Windows\rss\csrss.exe

      Filesize

      4.1MB

      MD5

      d7d147cfa65fd2d6347d667ca24ee34a

      SHA1

      0534a2c89750d3d1ba3620cba6bf0b2bbae69215

      SHA256

      f3e6369b79f26a63c22b033973a2964715862a2b3706d4bd063f6d93534c23a8

      SHA512

      faecf35812edf851110b9f7f2710437460d8173187342a5437d752ce690798c55b21689bd6d67c7dc1bb26a0d3cb20350e077a11ea57b7f7f6fed2213d7868e4

    • memory/976-134-0x00000000054D0000-0x0000000005827000-memory.dmp

      Filesize

      3.3MB

    • memory/976-140-0x0000000070B90000-0x0000000070EE7000-memory.dmp

      Filesize

      3.3MB

    • memory/976-139-0x0000000070940000-0x000000007098C000-memory.dmp

      Filesize

      304KB

    • memory/1832-184-0x0000000070860000-0x00000000708AC000-memory.dmp

      Filesize

      304KB

    • memory/1832-185-0x0000000070AB0000-0x0000000070E07000-memory.dmp

      Filesize

      3.3MB

    • memory/2488-75-0x0000000002A50000-0x0000000002E50000-memory.dmp

      Filesize

      4.0MB

    • memory/2488-74-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/2488-76-0x0000000002E50000-0x000000000373B000-memory.dmp

      Filesize

      8.9MB

    • memory/2488-1-0x0000000002A50000-0x0000000002E50000-memory.dmp

      Filesize

      4.0MB

    • memory/2488-3-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/2488-2-0x0000000002E50000-0x000000000373B000-memory.dmp

      Filesize

      8.9MB

    • memory/3008-112-0x0000000070B50000-0x0000000070EA7000-memory.dmp

      Filesize

      3.3MB

    • memory/3008-106-0x00000000056F0000-0x0000000005A47000-memory.dmp

      Filesize

      3.3MB

    • memory/3008-111-0x0000000070940000-0x000000007098C000-memory.dmp

      Filesize

      304KB

    • memory/3096-201-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/3212-26-0x0000000070AD0000-0x0000000070E27000-memory.dmp

      Filesize

      3.3MB

    • memory/3212-9-0x00000000054E0000-0x0000000005502000-memory.dmp

      Filesize

      136KB

    • memory/3212-42-0x00000000079A0000-0x0000000007A36000-memory.dmp

      Filesize

      600KB

    • memory/3212-43-0x00000000078B0000-0x00000000078C1000-memory.dmp

      Filesize

      68KB

    • memory/3212-44-0x0000000007900000-0x000000000790E000-memory.dmp

      Filesize

      56KB

    • memory/3212-45-0x0000000007910000-0x0000000007925000-memory.dmp

      Filesize

      84KB

    • memory/3212-46-0x0000000007960000-0x000000000797A000-memory.dmp

      Filesize

      104KB

    • memory/3212-47-0x0000000007950000-0x0000000007958000-memory.dmp

      Filesize

      32KB

    • memory/3212-50-0x00000000746D0000-0x0000000074E81000-memory.dmp

      Filesize

      7.7MB

    • memory/3212-4-0x00000000746DE000-0x00000000746DF000-memory.dmp

      Filesize

      4KB

    • memory/3212-5-0x0000000002DB0000-0x0000000002DE6000-memory.dmp

      Filesize

      216KB

    • memory/3212-7-0x00000000746D0000-0x0000000074E81000-memory.dmp

      Filesize

      7.7MB

    • memory/3212-6-0x00000000055E0000-0x0000000005C0A000-memory.dmp

      Filesize

      6.2MB

    • memory/3212-8-0x00000000746D0000-0x0000000074E81000-memory.dmp

      Filesize

      7.7MB

    • memory/3212-41-0x00000000050D0000-0x00000000050DA000-memory.dmp

      Filesize

      40KB

    • memory/3212-40-0x0000000007830000-0x000000000784A000-memory.dmp

      Filesize

      104KB

    • memory/3212-39-0x0000000007E70000-0x00000000084EA000-memory.dmp

      Filesize

      6.5MB

    • memory/3212-38-0x00000000746D0000-0x0000000074E81000-memory.dmp

      Filesize

      7.7MB

    • memory/3212-11-0x0000000005D60000-0x0000000005DC6000-memory.dmp

      Filesize

      408KB

    • memory/3212-35-0x00000000076E0000-0x00000000076FE000-memory.dmp

      Filesize

      120KB

    • memory/3212-36-0x0000000007700000-0x00000000077A4000-memory.dmp

      Filesize

      656KB

    • memory/3212-10-0x0000000005C80000-0x0000000005CE6000-memory.dmp

      Filesize

      408KB

    • memory/3212-17-0x0000000005DD0000-0x0000000006127000-memory.dmp

      Filesize

      3.3MB

    • memory/3212-37-0x00000000746D0000-0x0000000074E81000-memory.dmp

      Filesize

      7.7MB

    • memory/3212-25-0x0000000070940000-0x000000007098C000-memory.dmp

      Filesize

      304KB

    • memory/3212-24-0x00000000076A0000-0x00000000076D4000-memory.dmp

      Filesize

      208KB

    • memory/3212-23-0x00000000067E0000-0x0000000006826000-memory.dmp

      Filesize

      280KB

    • memory/3212-22-0x00000000062B0000-0x00000000062FC000-memory.dmp

      Filesize

      304KB

    • memory/3212-21-0x0000000006280000-0x000000000629E000-memory.dmp

      Filesize

      120KB

    • memory/3380-162-0x0000000070AB0000-0x0000000070E07000-memory.dmp

      Filesize

      3.3MB

    • memory/3380-172-0x00000000071B0000-0x00000000071C1000-memory.dmp

      Filesize

      68KB

    • memory/3380-173-0x00000000059F0000-0x0000000005A05000-memory.dmp

      Filesize

      84KB

    • memory/3380-161-0x0000000070860000-0x00000000708AC000-memory.dmp

      Filesize

      304KB

    • memory/3380-171-0x0000000006E50000-0x0000000006EF4000-memory.dmp

      Filesize

      656KB

    • memory/3380-158-0x0000000005670000-0x00000000059C7000-memory.dmp

      Filesize

      3.3MB

    • memory/3380-160-0x0000000005D90000-0x0000000005DDC000-memory.dmp

      Filesize

      304KB

    • memory/4044-73-0x0000000007E50000-0x0000000007E61000-memory.dmp

      Filesize

      68KB

    • memory/4044-77-0x0000000007EA0000-0x0000000007EB5000-memory.dmp

      Filesize

      84KB

    • memory/4044-72-0x0000000007B30000-0x0000000007BD4000-memory.dmp

      Filesize

      656KB

    • memory/4044-63-0x0000000070AC0000-0x0000000070E17000-memory.dmp

      Filesize

      3.3MB

    • memory/4044-62-0x0000000070940000-0x000000007098C000-memory.dmp

      Filesize

      304KB

    • memory/4044-61-0x00000000063E0000-0x0000000006737000-memory.dmp

      Filesize

      3.3MB

    • memory/4844-90-0x0000000070940000-0x000000007098C000-memory.dmp

      Filesize

      304KB

    • memory/4844-91-0x0000000070AC0000-0x0000000070E17000-memory.dmp

      Filesize

      3.3MB

    • memory/5012-125-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/5012-52-0x0000000002A50000-0x0000000002E54000-memory.dmp

      Filesize

      4.0MB