Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240426-en
  • resource tags

    arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    16-05-2024 09:48

General

  • Target

    ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe

  • Size

    4.1MB

  • MD5

    a3c419f3f21ea2b1f953b6afffa93ab3

  • SHA1

    fc3d57e90e505d0ea5a1194bc0d244eac6924505

  • SHA256

    ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef

  • SHA512

    ad6f26ce3277538232654956ebe8a07148ff4e817719c123245d107abeb94833cdd21e30602decd70bf6c8806a0a4cb8b6158ff681363dd1e9682b6a026036ac

  • SSDEEP

    98304:NH49zrfgobu9aDMWAg4dPDb/NQHvakIF/A8L3rqLZk5t2qZ3qL2LAZ5q:Er7OagDbOPW/F2k5tRZaLrk

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.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • 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\ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
    "C:\Users\Admin\AppData\Local\Temp\ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2728
    • 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:4084
    • C:\Users\Admin\AppData\Local\Temp\ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.exe
      "C:\Users\Admin\AppData\Local\Temp\ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef.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:4456
      • 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:1572
      • 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:1108
        • 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:4340
      • 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:2104
      • 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:4212
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Manipulates WinMonFS driver.
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:476
        • 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:3348
        • 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:3808
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:3024
          • 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:1064
          • 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:1740
          • 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:1932
          • 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:1708

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1zj0o5ee.c3v.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

      595d84634876f215969d5b7dd7161e68

      SHA1

      295a03e3fdfd9627152423b6e3ab4e1da9926b27

      SHA256

      fa0a5449ed163f74bf0b64947156d6bbf8ff6c8efbb993a45123585d7c366a8e

      SHA512

      87f9aabf9fc1fdbcea1e3eb7bdaefa33e3f8ee86ada7f83f1bac5214173557808299f8846832055d27ad6bbf94f9fa3b07128e7ee566b68e2da240d7c2e3e9fb

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

      Filesize

      19KB

      MD5

      89f45b04b175da47c3818a204441923e

      SHA1

      abf86afdcb9078d690e6a06f1caa9c8e45cfc7c1

      SHA256

      0d44dbc40b2dd74e51c4d27f2ed5f8ee41e3cb0535111570294383c3519f55c7

      SHA512

      a3ab064e4c648211efc0872b0dca62775108cf369b4fe873e973497cb41adc2791ccc37de373f3d908c199c69563c2b56af148f6a8b9a61e3bdd88802e1625ad

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

      Filesize

      19KB

      MD5

      fbcf625d8d2ef66696b9ba8815c13726

      SHA1

      6da9b33388b703103a620f84a7e565302fe41cb8

      SHA256

      391a97f33642a4d9f70d5f384e0aeb9aff175b65f631304b0e0db3a287275926

      SHA512

      01d973e4c466002a97ae366ffaa8b13855f1dde8c7a17fb812c960c24d9dfd5c05d138c33f110f63f3a9c2426292988d757fc186fa608e4dcdf594654a4b3b90

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

      Filesize

      19KB

      MD5

      c066338eb89297c30bc644627066ddd8

      SHA1

      8b8112ee491bc0d8dd5350a090fa1d8e40ab43ba

      SHA256

      a6d270847422f2b7db6d9c863658b4048788fa843d3aa9c4b792c98759be34ab

      SHA512

      3a8cb4596f1a9813f9ebf259b3231c8d688a495d6424e3743dffd539a139972cd3e8cfc9a944bab4cc08a09e6bd22d50acd3ddbfbf6798a402f252de1ff72055

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

      Filesize

      19KB

      MD5

      1321bb4ad65f54aedc6c3861cd12e556

      SHA1

      7966d6ca95b5c5d7519e16e6ce2bc90ce34104ea

      SHA256

      9633932f18afaf1fa695cee19c5eb32e5d3e778d58715aefc7643feb61438bcb

      SHA512

      15339b52873c7326fa053af5be494e10406c5317df9900150e725869dccc5460eb491e4f6333b45b36b236c2e6c4bc89abe2c1c50a99e193984fe7b1fb29f844

    • C:\Windows\rss\csrss.exe

      Filesize

      4.1MB

      MD5

      a3c419f3f21ea2b1f953b6afffa93ab3

      SHA1

      fc3d57e90e505d0ea5a1194bc0d244eac6924505

      SHA256

      ec71d99d67a0c77b556c316b7847f3f4b5e89bb7e5b8292bd23d6e2dadc60aef

      SHA512

      ad6f26ce3277538232654956ebe8a07148ff4e817719c123245d107abeb94833cdd21e30602decd70bf6c8806a0a4cb8b6158ff681363dd1e9682b6a026036ac

    • memory/476-213-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/476-217-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/476-209-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/476-205-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/476-203-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/476-211-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/476-195-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/476-215-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/476-225-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/476-207-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/476-223-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/476-221-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/476-219-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/1064-172-0x0000000007310000-0x0000000007321000-memory.dmp

      Filesize

      68KB

    • memory/1064-160-0x0000000006430000-0x000000000647C000-memory.dmp

      Filesize

      304KB

    • memory/1064-158-0x0000000005940000-0x0000000005C97000-memory.dmp

      Filesize

      3.3MB

    • memory/1064-161-0x00000000700B0000-0x00000000700FC000-memory.dmp

      Filesize

      304KB

    • memory/1064-162-0x00000000702C0000-0x0000000070617000-memory.dmp

      Filesize

      3.3MB

    • memory/1064-171-0x0000000007160000-0x0000000007204000-memory.dmp

      Filesize

      656KB

    • memory/1064-173-0x0000000005CD0000-0x0000000005CE5000-memory.dmp

      Filesize

      84KB

    • memory/1572-74-0x0000000007940000-0x0000000007955000-memory.dmp

      Filesize

      84KB

    • memory/1572-73-0x00000000078F0000-0x0000000007901000-memory.dmp

      Filesize

      68KB

    • memory/1572-72-0x00000000075C0000-0x0000000007664000-memory.dmp

      Filesize

      656KB

    • memory/1572-63-0x00000000703C0000-0x0000000070717000-memory.dmp

      Filesize

      3.3MB

    • memory/1572-62-0x0000000070190000-0x00000000701DC000-memory.dmp

      Filesize

      304KB

    • memory/1572-61-0x0000000005E10000-0x0000000006167000-memory.dmp

      Filesize

      3.3MB

    • memory/1740-186-0x0000000070300000-0x0000000070657000-memory.dmp

      Filesize

      3.3MB

    • memory/1740-185-0x00000000700B0000-0x00000000700FC000-memory.dmp

      Filesize

      304KB

    • memory/1740-175-0x0000000006310000-0x0000000006667000-memory.dmp

      Filesize

      3.3MB

    • memory/2104-86-0x0000000005730000-0x0000000005A87000-memory.dmp

      Filesize

      3.3MB

    • memory/2104-88-0x0000000070190000-0x00000000701DC000-memory.dmp

      Filesize

      304KB

    • memory/2104-89-0x00000000703A0000-0x00000000706F7000-memory.dmp

      Filesize

      3.3MB

    • memory/2728-3-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/2728-2-0x0000000002E90000-0x000000000377B000-memory.dmp

      Filesize

      8.9MB

    • memory/2728-100-0x0000000002E90000-0x000000000377B000-memory.dmp

      Filesize

      8.9MB

    • memory/2728-1-0x0000000002A90000-0x0000000002E89000-memory.dmp

      Filesize

      4.0MB

    • memory/2728-99-0x0000000002A90000-0x0000000002E89000-memory.dmp

      Filesize

      4.0MB

    • memory/2728-98-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB

    • memory/3348-139-0x0000000070310000-0x0000000070667000-memory.dmp

      Filesize

      3.3MB

    • memory/3348-138-0x0000000070190000-0x00000000701DC000-memory.dmp

      Filesize

      304KB

    • memory/4084-35-0x0000000007940000-0x000000000795E000-memory.dmp

      Filesize

      120KB

    • memory/4084-46-0x0000000007BA0000-0x0000000007BBA000-memory.dmp

      Filesize

      104KB

    • memory/4084-47-0x0000000007BC0000-0x0000000007BC8000-memory.dmp

      Filesize

      32KB

    • memory/4084-42-0x0000000007BE0000-0x0000000007C76000-memory.dmp

      Filesize

      600KB

    • memory/4084-44-0x0000000007B40000-0x0000000007B4E000-memory.dmp

      Filesize

      56KB

    • memory/4084-41-0x0000000007AD0000-0x0000000007ADA000-memory.dmp

      Filesize

      40KB

    • memory/4084-43-0x0000000007AF0000-0x0000000007B01000-memory.dmp

      Filesize

      68KB

    • memory/4084-24-0x00000000078E0000-0x0000000007914000-memory.dmp

      Filesize

      208KB

    • memory/4084-40-0x0000000073F20000-0x00000000746D1000-memory.dmp

      Filesize

      7.7MB

    • memory/4084-45-0x0000000007B50000-0x0000000007B65000-memory.dmp

      Filesize

      84KB

    • memory/4084-39-0x0000000007A90000-0x0000000007AAA000-memory.dmp

      Filesize

      104KB

    • memory/4084-25-0x0000000070190000-0x00000000701DC000-memory.dmp

      Filesize

      304KB

    • memory/4084-37-0x0000000073F20000-0x00000000746D1000-memory.dmp

      Filesize

      7.7MB

    • memory/4084-26-0x0000000070310000-0x0000000070667000-memory.dmp

      Filesize

      3.3MB

    • memory/4084-36-0x0000000007960000-0x0000000007A04000-memory.dmp

      Filesize

      656KB

    • memory/4084-50-0x0000000073F20000-0x00000000746D1000-memory.dmp

      Filesize

      7.7MB

    • memory/4084-4-0x0000000073F2E000-0x0000000073F2F000-memory.dmp

      Filesize

      4KB

    • memory/4084-5-0x0000000005040000-0x0000000005076000-memory.dmp

      Filesize

      216KB

    • memory/4084-38-0x00000000080D0000-0x000000000874A000-memory.dmp

      Filesize

      6.5MB

    • memory/4084-6-0x0000000073F20000-0x00000000746D1000-memory.dmp

      Filesize

      7.7MB

    • memory/4084-23-0x0000000006A80000-0x0000000006AC6000-memory.dmp

      Filesize

      280KB

    • memory/4084-22-0x00000000069F0000-0x0000000006A3C000-memory.dmp

      Filesize

      304KB

    • memory/4084-21-0x00000000064C0000-0x00000000064DE000-memory.dmp

      Filesize

      120KB

    • memory/4084-20-0x0000000005FE0000-0x0000000006337000-memory.dmp

      Filesize

      3.3MB

    • memory/4084-11-0x0000000005F70000-0x0000000005FD6000-memory.dmp

      Filesize

      408KB

    • memory/4084-10-0x0000000005F00000-0x0000000005F66000-memory.dmp

      Filesize

      408KB

    • memory/4084-9-0x0000000005E60000-0x0000000005E82000-memory.dmp

      Filesize

      136KB

    • memory/4084-8-0x0000000073F20000-0x00000000746D1000-memory.dmp

      Filesize

      7.7MB

    • memory/4084-7-0x0000000005800000-0x0000000005E2A000-memory.dmp

      Filesize

      6.2MB

    • memory/4212-112-0x0000000070190000-0x00000000701DC000-memory.dmp

      Filesize

      304KB

    • memory/4212-107-0x0000000006220000-0x0000000006577000-memory.dmp

      Filesize

      3.3MB

    • memory/4212-113-0x00000000703E0000-0x0000000070737000-memory.dmp

      Filesize

      3.3MB

    • memory/4456-52-0x0000000002A20000-0x0000000002E25000-memory.dmp

      Filesize

      4.0MB

    • memory/4456-127-0x0000000000400000-0x0000000000D1C000-memory.dmp

      Filesize

      9.1MB