Analysis

  • max time kernel
    149s
  • max time network
    142s
  • 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 22:25

General

  • Target

    185d9c8b9a62d60137a95278bcb1d5170001a6f2075358916ac4228d260f19f5.exe

  • Size

    4.2MB

  • MD5

    8e5c6d736faa3afaeb3ec4362a7b763e

  • SHA1

    0b3a10e74e1a0f2b0a0e701782a325842145b961

  • SHA256

    185d9c8b9a62d60137a95278bcb1d5170001a6f2075358916ac4228d260f19f5

  • SHA512

    e33c6cb3cc1348827e17d12ca2e492472e94cf3a38e7bf4c4737ec0b2abda4b27dbc4acbd3f12d7654551d4bb173334054394e6ff88ae0fbd200057e49b0c322

  • SSDEEP

    98304:3amOmyh13YwSD+iffg9rOMOczucEEdNxQlfwo87Elwi0PG16:3Ty8Jy4o9ecZxQhwo8IinPG16

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\185d9c8b9a62d60137a95278bcb1d5170001a6f2075358916ac4228d260f19f5.exe
    "C:\Users\Admin\AppData\Local\Temp\185d9c8b9a62d60137a95278bcb1d5170001a6f2075358916ac4228d260f19f5.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4488
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4532
    • C:\Users\Admin\AppData\Local\Temp\185d9c8b9a62d60137a95278bcb1d5170001a6f2075358916ac4228d260f19f5.exe
      "C:\Users\Admin\AppData\Local\Temp\185d9c8b9a62d60137a95278bcb1d5170001a6f2075358916ac4228d260f19f5.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:572
      • 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:4492
      • 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:1728
        • 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:1504
      • 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:2368
      • 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:752
      • 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:2172
        • 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:3044
        • 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:692
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:1736
          • 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:832
          • 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:2556
          • 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:776
          • 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:2628

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_r0g3zgi4.vgl.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

      9a0e18049cdc65c1677e4efdcb2b16c0

      SHA1

      ff543aafa209cfee05e0e17eb82794b2fe3c673c

      SHA256

      acc5db40246f04e562b62afa389667471108be5ab573a760a8c8a1e0a2150fb7

      SHA512

      21a936c6fa5611f309e9df70e91058c62893161b1f62cc3430f1cf467b38a30a9f2bf4acc16904d67bb9ddf2a99ba4129353501e09c0e9ba0e4bcc2e31453de9

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

      Filesize

      19KB

      MD5

      9fa08a8f23f9b833114268689678f769

      SHA1

      f248addd01d9f7fd24f9bc002e03a476a132817b

      SHA256

      8ace73c1aec9cda1eefd9c190891f57316f9773fdf432dc0eae112f13d2c9109

      SHA512

      fc0ec8fc53048865f69102ed14ed9c8b19776c3913c2c371a793ba99dea1b691cacbf3f0cc4b507b11f17b5483f893a4e8b57f888c5a74d498c11781b4d8811d

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

      Filesize

      19KB

      MD5

      61cefafc19d3265e01170157563d8f83

      SHA1

      149c292f56fef54701498d5874326af952c1a2f2

      SHA256

      12a30d3c9f512fdd3c684db01dcadfe53d74ad5c2ee04f8bc0767d47e87e03a2

      SHA512

      639e57c6501daccc044c5ed9d0c536c0b7aa63c43ee7b777b9bdb08479ee251b29dbcf698a4a2e653735b2c97bf6f3b038caf8326d34c8d9789a67f6c40e0ef5

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

      Filesize

      19KB

      MD5

      22126bcf12b71481422c8c6b0c93e690

      SHA1

      f41a8ac36252a8ff8abd32f34a30dd8ad49f3bba

      SHA256

      2a70fd5af107492be8352f83dee9477ef84d2642a5c15050e2e821b37893dc21

      SHA512

      814e55834e6cf9869a5f1a59a08699c244f7c907c43a30f7a174f6c21be7a22e8afead10013b53b0eab6f4675f78368899bb3d44d680d34b04484bfbe58adff8

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

      Filesize

      19KB

      MD5

      d2eee75f025afb1aae2de0b602dd41ec

      SHA1

      b25f1049eb2a8599eb9fda7c16835c10a3189c72

      SHA256

      d71e80613e653abe28dbae7e0e02e05136b8cbeb6aec96406834b1083f6d6b88

      SHA512

      5b1b9c3cb5f5e5c856f75b4e121b0b27790d158568ce894ecb7397675b4ded1838ee3adec36b0f510a8d4b7459e2a566263f621229f1aca8912e8951b18914cd

    • C:\Windows\rss\csrss.exe

      Filesize

      4.2MB

      MD5

      8e5c6d736faa3afaeb3ec4362a7b763e

      SHA1

      0b3a10e74e1a0f2b0a0e701782a325842145b961

      SHA256

      185d9c8b9a62d60137a95278bcb1d5170001a6f2075358916ac4228d260f19f5

      SHA512

      e33c6cb3cc1348827e17d12ca2e492472e94cf3a38e7bf4c4737ec0b2abda4b27dbc4acbd3f12d7654551d4bb173334054394e6ff88ae0fbd200057e49b0c322

    • memory/572-147-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/752-110-0x0000000070E50000-0x0000000070E9C000-memory.dmp

      Filesize

      304KB

    • memory/752-111-0x0000000070FD0000-0x0000000071327000-memory.dmp

      Filesize

      3.3MB

    • memory/832-164-0x0000000070D70000-0x0000000070DBC000-memory.dmp

      Filesize

      304KB

    • memory/832-161-0x0000000005B20000-0x0000000005E77000-memory.dmp

      Filesize

      3.3MB

    • memory/832-163-0x0000000006040000-0x000000000608C000-memory.dmp

      Filesize

      304KB

    • memory/832-174-0x0000000007240000-0x00000000072E4000-memory.dmp

      Filesize

      656KB

    • memory/832-165-0x0000000070EF0000-0x0000000071247000-memory.dmp

      Filesize

      3.3MB

    • memory/832-175-0x00000000073E0000-0x00000000073F1000-memory.dmp

      Filesize

      68KB

    • memory/832-176-0x0000000005A80000-0x0000000005A95000-memory.dmp

      Filesize

      84KB

    • memory/2172-238-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/2172-223-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/2172-226-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/2172-220-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/2172-232-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/2172-199-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/2172-235-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/2172-229-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/2172-208-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/2172-211-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/2172-151-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/2172-214-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/2172-217-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/2368-89-0x0000000070E50000-0x0000000070E9C000-memory.dmp

      Filesize

      304KB

    • memory/2368-90-0x0000000070FD0000-0x0000000071327000-memory.dmp

      Filesize

      3.3MB

    • memory/2556-186-0x00000000063A0000-0x00000000066F7000-memory.dmp

      Filesize

      3.3MB

    • memory/2556-188-0x0000000070D70000-0x0000000070DBC000-memory.dmp

      Filesize

      304KB

    • memory/2556-189-0x0000000070F10000-0x0000000071267000-memory.dmp

      Filesize

      3.3MB

    • memory/3044-137-0x0000000070E50000-0x0000000070E9C000-memory.dmp

      Filesize

      304KB

    • memory/3044-138-0x0000000071060000-0x00000000713B7000-memory.dmp

      Filesize

      3.3MB

    • memory/3044-135-0x0000000005780000-0x0000000005AD7000-memory.dmp

      Filesize

      3.3MB

    • memory/4488-120-0x0000000003F20000-0x000000000480B000-memory.dmp

      Filesize

      8.9MB

    • memory/4488-1-0x0000000002180000-0x0000000002580000-memory.dmp

      Filesize

      4.0MB

    • memory/4488-109-0x0000000002180000-0x0000000002580000-memory.dmp

      Filesize

      4.0MB

    • memory/4488-2-0x0000000003F20000-0x000000000480B000-memory.dmp

      Filesize

      8.9MB

    • memory/4488-88-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/4488-3-0x0000000000400000-0x0000000001DFB000-memory.dmp

      Filesize

      26.0MB

    • memory/4492-74-0x00000000075B0000-0x00000000075C1000-memory.dmp

      Filesize

      68KB

    • memory/4492-75-0x0000000007600000-0x0000000007615000-memory.dmp

      Filesize

      84KB

    • memory/4492-73-0x0000000007290000-0x0000000007334000-memory.dmp

      Filesize

      656KB

    • memory/4492-64-0x0000000071080000-0x00000000713D7000-memory.dmp

      Filesize

      3.3MB

    • memory/4492-63-0x0000000070E50000-0x0000000070E9C000-memory.dmp

      Filesize

      304KB

    • memory/4492-56-0x0000000005B10000-0x0000000005E67000-memory.dmp

      Filesize

      3.3MB

    • memory/4532-52-0x0000000074BE0000-0x0000000075391000-memory.dmp

      Filesize

      7.7MB

    • memory/4532-49-0x00000000079B0000-0x00000000079B8000-memory.dmp

      Filesize

      32KB

    • memory/4532-48-0x00000000079C0000-0x00000000079DA000-memory.dmp

      Filesize

      104KB

    • memory/4532-47-0x0000000007970000-0x0000000007985000-memory.dmp

      Filesize

      84KB

    • memory/4532-46-0x0000000007960000-0x000000000796E000-memory.dmp

      Filesize

      56KB

    • memory/4532-45-0x0000000007910000-0x0000000007921000-memory.dmp

      Filesize

      68KB

    • memory/4532-44-0x0000000007A00000-0x0000000007A96000-memory.dmp

      Filesize

      600KB

    • memory/4532-43-0x00000000078F0000-0x00000000078FA000-memory.dmp

      Filesize

      40KB

    • memory/4532-42-0x00000000078B0000-0x00000000078CA000-memory.dmp

      Filesize

      104KB

    • memory/4532-41-0x0000000007EF0000-0x000000000856A000-memory.dmp

      Filesize

      6.5MB

    • memory/4532-38-0x0000000005160000-0x0000000005170000-memory.dmp

      Filesize

      64KB

    • memory/4532-39-0x0000000005160000-0x0000000005170000-memory.dmp

      Filesize

      64KB

    • memory/4532-40-0x0000000005160000-0x0000000005170000-memory.dmp

      Filesize

      64KB

    • memory/4532-37-0x0000000007780000-0x0000000007824000-memory.dmp

      Filesize

      656KB

    • memory/4532-36-0x0000000007760000-0x000000000777E000-memory.dmp

      Filesize

      120KB

    • memory/4532-27-0x0000000070FD0000-0x0000000071327000-memory.dmp

      Filesize

      3.3MB

    • memory/4532-26-0x0000000070E50000-0x0000000070E9C000-memory.dmp

      Filesize

      304KB

    • memory/4532-25-0x0000000007700000-0x0000000007734000-memory.dmp

      Filesize

      208KB

    • memory/4532-24-0x000000007F0C0000-0x000000007F0D0000-memory.dmp

      Filesize

      64KB

    • memory/4532-23-0x0000000006870000-0x00000000068B6000-memory.dmp

      Filesize

      280KB

    • memory/4532-22-0x0000000006330000-0x000000000637C000-memory.dmp

      Filesize

      304KB

    • memory/4532-21-0x00000000062E0000-0x00000000062FE000-memory.dmp

      Filesize

      120KB

    • memory/4532-20-0x0000000005E40000-0x0000000006197000-memory.dmp

      Filesize

      3.3MB

    • memory/4532-11-0x0000000005DD0000-0x0000000005E36000-memory.dmp

      Filesize

      408KB

    • memory/4532-10-0x00000000055F0000-0x0000000005656000-memory.dmp

      Filesize

      408KB

    • memory/4532-9-0x0000000005550000-0x0000000005572000-memory.dmp

      Filesize

      136KB

    • memory/4532-7-0x0000000005160000-0x0000000005170000-memory.dmp

      Filesize

      64KB

    • memory/4532-8-0x0000000005160000-0x0000000005170000-memory.dmp

      Filesize

      64KB

    • memory/4532-5-0x0000000074BE0000-0x0000000075391000-memory.dmp

      Filesize

      7.7MB

    • memory/4532-6-0x00000000057A0000-0x0000000005DCA000-memory.dmp

      Filesize

      6.2MB

    • memory/4532-4-0x0000000002E30000-0x0000000002E66000-memory.dmp

      Filesize

      216KB