Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240419-en
  • resource tags

    arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    27-04-2024 22:28

General

  • Target

    3fe0cb3473ac1e2c1358fd008bf7e4d53008b25aedeb31d17efe3e7ea03670fc.exe

  • Size

    4.2MB

  • MD5

    93fb5ae8685336cfd22b79d8ec5792a6

  • SHA1

    548fc770b4ee004d89e7eb40b19d93388741a5c8

  • SHA256

    3fe0cb3473ac1e2c1358fd008bf7e4d53008b25aedeb31d17efe3e7ea03670fc

  • SHA512

    b6f6b5db423ceefe59f8588078fe9299a2a697c39ddd52a56d6cc9db452960dd1787016b7b7f2eb2601543b0fe9378f9db93736a0688b013a3f192a30cd0d246

  • SSDEEP

    98304:famOmyh13YwSD+iffg9rOMOczucEEdNxQlfwo87Elwi0PG15:fTy8Jy4o9ecZxQhwo8IinPG15

Malware Config

Signatures

  • Glupteba

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

  • Glupteba payload 18 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
  • 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\3fe0cb3473ac1e2c1358fd008bf7e4d53008b25aedeb31d17efe3e7ea03670fc.exe
    "C:\Users\Admin\AppData\Local\Temp\3fe0cb3473ac1e2c1358fd008bf7e4d53008b25aedeb31d17efe3e7ea03670fc.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1040
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4064
    • C:\Users\Admin\AppData\Local\Temp\3fe0cb3473ac1e2c1358fd008bf7e4d53008b25aedeb31d17efe3e7ea03670fc.exe
      "C:\Users\Admin\AppData\Local\Temp\3fe0cb3473ac1e2c1358fd008bf7e4d53008b25aedeb31d17efe3e7ea03670fc.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:3200
      • 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:2992
      • 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:1448
        • 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:4220
      • 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:1380
      • 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:3104
      • 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:492
        • 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:3328
        • 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:1428
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:1892
          • 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:3744
          • 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:3416
          • 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:1560
          • 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:4756

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2vuyvqy5.vc1.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

      6d38e3dc593b5c4278b36ddd42026ba4

      SHA1

      c3f9dc6b5a87ba58be05432e2e7fc64108258683

      SHA256

      1b20d0fa22cd38eb1e18649cb08dc26a4c2b1e668ff96db2ed26d9b70b279446

      SHA512

      c9a7045c92b056f1923b4da2de5969eb9ea94d62bbc54e1fce35d8837a996ebc59554992b0a19af50199a4a7eb47b5f6f6b3541deafebd5f1293f18cee256232

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

      Filesize

      19KB

      MD5

      44151a837fd7a73cbe07557c383fbb59

      SHA1

      f2facfaafc8f663b563972dcd4d330a399705687

      SHA256

      5f60fab1cf4f7038816ae5ed62a16a0749737b21a328eb2381a428053d49ed48

      SHA512

      47bb39cee67f940da682337f523c2be7025a276c78322ed62aac6642a34498ec6ec995e2d6915733c47faf9675165fde7bd91be5b287233b84ee5b846632292a

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

      Filesize

      19KB

      MD5

      83c3704258019b7bfe42e5fdf83b8b03

      SHA1

      1bb5482cb02a598495388aa9c701cdf61fe8f137

      SHA256

      32b296b136aee05371a5a1a67d4205d513c6a8f035115a5ec67e2886fbc7238b

      SHA512

      d72a49ce03a7b871a383679a0f526eec4935ef59f1af3722ad7ec1e9fc6bf6d8749f59ebeb3fcdd7c65b689dba4e3a958f35e1c55ad957cad7fddf1fa770647a

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

      Filesize

      19KB

      MD5

      3f4b1dc2e6e3132ae908c5ddcaab986d

      SHA1

      fb04ab00ef5ffaa132a0eae02d0504953baa6d34

      SHA256

      c167807afef60eb34150a345e6fc0976343051cdb3d3543a1024c6738fabe03b

      SHA512

      fd6b5f3478fee82f3ea4253dd6f231b86002302e314744f6d24e35929f77525ab3dfe24e1877baf5065191e82f1ce49422deeb704039e4c84a784d4875ba0099

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

      Filesize

      19KB

      MD5

      f23f85ddd260c3588c3250a261ba0995

      SHA1

      3e8708a8ece34e3ab09fba91391b3902b5c6fda1

      SHA256

      72b50f6e01d467dbcd780e01f4565ecd1122469cf2e2a3aa0976c4f7b33d3ed0

      SHA512

      e123c88ee2096536b553a4affb1a650507b363862136e6416699d62d3663adb82eec5f317faa5629c18d4869fe0a6e8bb8c9e7019b40afc3658a1edf2e41a19d

    • C:\Windows\rss\csrss.exe

      Filesize

      4.2MB

      MD5

      93fb5ae8685336cfd22b79d8ec5792a6

      SHA1

      548fc770b4ee004d89e7eb40b19d93388741a5c8

      SHA256

      3fe0cb3473ac1e2c1358fd008bf7e4d53008b25aedeb31d17efe3e7ea03670fc

      SHA512

      b6f6b5db423ceefe59f8588078fe9299a2a697c39ddd52a56d6cc9db452960dd1787016b7b7f2eb2601543b0fe9378f9db93736a0688b013a3f192a30cd0d246

    • memory/492-147-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/492-217-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/492-209-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/492-205-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/492-203-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/492-201-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/492-199-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/492-211-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/492-221-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/492-219-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/492-213-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/492-207-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/492-215-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/1040-105-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/1040-3-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/1040-107-0x0000000003F40000-0x000000000482B000-memory.dmp

      Filesize

      8.9MB

    • memory/1040-1-0x0000000002120000-0x0000000002520000-memory.dmp

      Filesize

      4.0MB

    • memory/1040-2-0x0000000003F40000-0x000000000482B000-memory.dmp

      Filesize

      8.9MB

    • memory/1040-106-0x0000000002120000-0x0000000002520000-memory.dmp

      Filesize

      4.0MB

    • memory/1380-85-0x00000000702E0000-0x000000007032C000-memory.dmp

      Filesize

      304KB

    • memory/1380-83-0x0000000005810000-0x0000000005B67000-memory.dmp

      Filesize

      3.3MB

    • memory/1380-86-0x0000000070460000-0x00000000707B7000-memory.dmp

      Filesize

      3.3MB

    • memory/2992-70-0x0000000006FD0000-0x0000000006FE1000-memory.dmp

      Filesize

      68KB

    • memory/2992-59-0x00000000702E0000-0x000000007032C000-memory.dmp

      Filesize

      304KB

    • memory/2992-60-0x00000000704F0000-0x0000000070847000-memory.dmp

      Filesize

      3.3MB

    • memory/2992-69-0x0000000006CE0000-0x0000000006D84000-memory.dmp

      Filesize

      656KB

    • memory/2992-71-0x0000000007020000-0x0000000007035000-memory.dmp

      Filesize

      84KB

    • memory/3104-109-0x0000000070460000-0x00000000707B7000-memory.dmp

      Filesize

      3.3MB

    • memory/3104-108-0x00000000702E0000-0x000000007032C000-memory.dmp

      Filesize

      304KB

    • memory/3200-122-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/3328-133-0x0000000006330000-0x0000000006687000-memory.dmp

      Filesize

      3.3MB

    • memory/3328-135-0x00000000702E0000-0x000000007032C000-memory.dmp

      Filesize

      304KB

    • memory/3328-136-0x00000000704D0000-0x0000000070827000-memory.dmp

      Filesize

      3.3MB

    • memory/3416-183-0x0000000070200000-0x000000007024C000-memory.dmp

      Filesize

      304KB

    • memory/3416-184-0x0000000070450000-0x00000000707A7000-memory.dmp

      Filesize

      3.3MB

    • memory/3744-158-0x0000000006500000-0x000000000654C000-memory.dmp

      Filesize

      304KB

    • memory/3744-156-0x0000000005F50000-0x00000000062A7000-memory.dmp

      Filesize

      3.3MB

    • memory/3744-172-0x00000000057F0000-0x0000000005805000-memory.dmp

      Filesize

      84KB

    • memory/3744-170-0x0000000007A80000-0x0000000007A91000-memory.dmp

      Filesize

      68KB

    • memory/3744-169-0x0000000007670000-0x0000000007714000-memory.dmp

      Filesize

      656KB

    • memory/3744-160-0x0000000070450000-0x00000000707A7000-memory.dmp

      Filesize

      3.3MB

    • memory/3744-159-0x0000000070200000-0x000000007024C000-memory.dmp

      Filesize

      304KB

    • memory/4064-39-0x00000000077B0000-0x00000000077CA000-memory.dmp

      Filesize

      104KB

    • memory/4064-35-0x0000000007660000-0x000000000767E000-memory.dmp

      Filesize

      120KB

    • memory/4064-49-0x0000000074070000-0x0000000074821000-memory.dmp

      Filesize

      7.7MB

    • memory/4064-38-0x0000000007DF0000-0x000000000846A000-memory.dmp

      Filesize

      6.5MB

    • memory/4064-41-0x00000000078B0000-0x0000000007946000-memory.dmp

      Filesize

      600KB

    • memory/4064-36-0x0000000007680000-0x0000000007724000-memory.dmp

      Filesize

      656KB

    • memory/4064-37-0x00000000029A0000-0x00000000029B0000-memory.dmp

      Filesize

      64KB

    • memory/4064-42-0x0000000007820000-0x0000000007831000-memory.dmp

      Filesize

      68KB

    • memory/4064-43-0x0000000007860000-0x000000000786E000-memory.dmp

      Filesize

      56KB

    • memory/4064-44-0x0000000007870000-0x0000000007885000-memory.dmp

      Filesize

      84KB

    • memory/4064-45-0x0000000007970000-0x000000000798A000-memory.dmp

      Filesize

      104KB

    • memory/4064-46-0x0000000007950000-0x0000000007958000-memory.dmp

      Filesize

      32KB

    • memory/4064-26-0x00000000704F0000-0x0000000070847000-memory.dmp

      Filesize

      3.3MB

    • memory/4064-40-0x00000000077F0000-0x00000000077FA000-memory.dmp

      Filesize

      40KB

    • memory/4064-25-0x00000000702E0000-0x000000007032C000-memory.dmp

      Filesize

      304KB

    • memory/4064-23-0x0000000007600000-0x0000000007634000-memory.dmp

      Filesize

      208KB

    • memory/4064-24-0x000000007FD80000-0x000000007FD90000-memory.dmp

      Filesize

      64KB

    • memory/4064-22-0x00000000067B0000-0x00000000067F6000-memory.dmp

      Filesize

      280KB

    • memory/4064-21-0x0000000006290000-0x00000000062DC000-memory.dmp

      Filesize

      304KB

    • memory/4064-20-0x0000000006210000-0x000000000622E000-memory.dmp

      Filesize

      120KB

    • memory/4064-16-0x0000000005D30000-0x0000000006087000-memory.dmp

      Filesize

      3.3MB

    • memory/4064-11-0x0000000005CC0000-0x0000000005D26000-memory.dmp

      Filesize

      408KB

    • memory/4064-9-0x0000000005C50000-0x0000000005CB6000-memory.dmp

      Filesize

      408KB

    • memory/4064-8-0x0000000005450000-0x0000000005472000-memory.dmp

      Filesize

      136KB

    • memory/4064-7-0x00000000054F0000-0x0000000005B1A000-memory.dmp

      Filesize

      6.2MB

    • memory/4064-6-0x00000000029A0000-0x00000000029B0000-memory.dmp

      Filesize

      64KB

    • memory/4064-5-0x0000000002D60000-0x0000000002D96000-memory.dmp

      Filesize

      216KB

    • memory/4064-4-0x0000000074070000-0x0000000074821000-memory.dmp

      Filesize

      7.7MB