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 22:24

General

  • Target

    2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe

  • Size

    4.2MB

  • MD5

    25199d55c9d415c843faa9ad9f60f561

  • SHA1

    2a469e110012160fc397280729b7a5aa01a17f03

  • SHA256

    2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30

  • SHA512

    067a570ee6b5f62aa7560dc272152a7cbc28dec7c4cbe3061a6f006a4674a31ed2a0c656cf2afc6c2d0482011f9b4dd03efd27e67d3f253826c75e9380f2fdb9

  • SSDEEP

    98304:3amOmyh13YwSD+iffg9rOMOczucEEdNxQlfwo87Elwi0PG1b:3Ty8Jy4o9ecZxQhwo8IinPG1b

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\2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe
    "C:\Users\Admin\AppData\Local\Temp\2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:468
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1780
    • C:\Users\Admin\AppData\Local\Temp\2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.exe
      "C:\Users\Admin\AppData\Local\Temp\2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30.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:2240
      • 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:4776
      • 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:800
        • 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:5064
      • 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:688
      • 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:2612
      • 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:1524
        • 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:1844
        • 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:3928
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:3228
          • 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:4504
          • 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:496
          • 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:4452
          • 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:3088

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Execution

    Scheduled Task/Job

    1
    T1053

    Persistence

    Create or Modify System Process

    1
    T1543

    Windows Service

    1
    T1543.003

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Scheduled Task/Job

    1
    T1053

    Privilege Escalation

    Create or Modify System Process

    1
    T1543

    Windows Service

    1
    T1543.003

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Scheduled Task/Job

    1
    T1053

    Defense Evasion

    Impair Defenses

    1
    T1562

    Disable or Modify System Firewall

    1
    T1562.004

    Modify Registry

    1
    T1112

    Discovery

    Query Registry

    2
    T1012

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_z0azt1zw.zeb.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

      cbfdec55655cd0b7471b95c03ae587e9

      SHA1

      e4001a113f105790998226b9e84b082ab3a3b02a

      SHA256

      dacba2f335ebd3d4b17fe1627b086995db5ec310e604783eb11faed8c255b552

      SHA512

      c7686a81d0368a298bc8daa74876ce9e0c017059acccb33d927f92c8f470a45aefb0c377196721508264284a5bc20cafc47744af829f44ec58a8f8ff75792517

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

      19KB

      MD5

      36faebe9b70f197f1e9ab3809ee34c6e

      SHA1

      e0e0701c61bf762d7f78ba74f02696c9c5d0dc76

      SHA256

      37ed36547d576f8e93554fc20e2d508051da487aee448f5f5dee27dac6b14c74

      SHA512

      7f25b430b3de1673c11b1929716420bf56b4016a6558189d25d20bb252bba30784968365e3f125d56185623ac3b36ea3b620ab5bd972097b7dfc5c6e07a71a8f

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

      19KB

      MD5

      76cb0e5c7d94b0462b0dbfc68ac8e297

      SHA1

      e6767564e22a737241db275ad734261d8c0aaf5b

      SHA256

      b36b12f58560e381c2f1b0823e37be4741fbd92481261439b84daa418d73e57a

      SHA512

      1dead8262ff41aabc950c4905e6f73ac116253ea014f37539a50fe6a25bb66f4b201beec3545362b4f6ebf0ab12a6399ecfebc353732b735f01eec30560a9656

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

      19KB

      MD5

      78028c9bb90bd1ec49b543db0f577fac

      SHA1

      8c4af38b63d57208d2f11bfa364e3ae4fc4955d6

      SHA256

      d8390e3742084ff24b6c3e1a9e4b670f720c9e340564465099e25db8c36633a2

      SHA512

      5da4e0554184dc055b2eb88238d6547e1ba4eab6b1de4dfb230e2587a09c2871aafd7d419f3216117de6a7408b7e22ab6514655eed273ea0231ed9729bca4477

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

      19KB

      MD5

      483841a6ddafc3b34335d3fcb9271300

      SHA1

      6dd5652c3de9310494a60432c2745ee5e66f3c0b

      SHA256

      3463a3ab4f8dd8500a854781a39d67d57767d76fd36a4261aaad7ec3a3bcefc4

      SHA512

      4360e6e5e9a28dc489759057acc30e806ee67a1ac7820377cd5ed88c85bce43ff7c5a61dff27eafcd1876acf1ecfed72735f11613edca67ad233d7ce5482afe7

    • C:\Windows\rss\csrss.exe
      Filesize

      4.2MB

      MD5

      25199d55c9d415c843faa9ad9f60f561

      SHA1

      2a469e110012160fc397280729b7a5aa01a17f03

      SHA256

      2490571adbf6a93b3fdb842b810c4401b44bda13217974876a16b8c393f49d30

      SHA512

      067a570ee6b5f62aa7560dc272152a7cbc28dec7c4cbe3061a6f006a4674a31ed2a0c656cf2afc6c2d0482011f9b4dd03efd27e67d3f253826c75e9380f2fdb9

    • memory/468-1-0x00000000020F0000-0x00000000024EC000-memory.dmp
      Filesize

      4.0MB

    • memory/468-2-0x0000000003F10000-0x00000000047FB000-memory.dmp
      Filesize

      8.9MB

    • memory/468-99-0x00000000020F0000-0x00000000024EC000-memory.dmp
      Filesize

      4.0MB

    • memory/468-98-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/468-3-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/468-120-0x0000000003F10000-0x00000000047FB000-memory.dmp
      Filesize

      8.9MB

    • memory/496-187-0x0000000070B40000-0x0000000070E97000-memory.dmp
      Filesize

      3.3MB

    • memory/496-186-0x00000000709C0000-0x0000000070A0C000-memory.dmp
      Filesize

      304KB

    • memory/688-86-0x0000000005AC0000-0x0000000005E17000-memory.dmp
      Filesize

      3.3MB

    • memory/688-88-0x0000000070AA0000-0x0000000070AEC000-memory.dmp
      Filesize

      304KB

    • memory/688-89-0x0000000070CB0000-0x0000000071007000-memory.dmp
      Filesize

      3.3MB

    • memory/1524-203-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/1524-230-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/1524-150-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/1524-233-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/1524-236-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/1524-227-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/1524-224-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/1524-218-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/1524-206-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/1524-209-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/1524-212-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/1524-221-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/1524-215-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/1780-30-0x0000000004BF0000-0x0000000004C00000-memory.dmp
      Filesize

      64KB

    • memory/1780-29-0x0000000004BF0000-0x0000000004C00000-memory.dmp
      Filesize

      64KB

    • memory/1780-4-0x0000000002A30000-0x0000000002A66000-memory.dmp
      Filesize

      216KB

    • memory/1780-5-0x0000000074830000-0x0000000074FE1000-memory.dmp
      Filesize

      7.7MB

    • memory/1780-6-0x0000000005230000-0x000000000585A000-memory.dmp
      Filesize

      6.2MB

    • memory/1780-8-0x0000000004BF0000-0x0000000004C00000-memory.dmp
      Filesize

      64KB

    • memory/1780-7-0x0000000004BF0000-0x0000000004C00000-memory.dmp
      Filesize

      64KB

    • memory/1780-49-0x00000000075F0000-0x00000000075F8000-memory.dmp
      Filesize

      32KB

    • memory/1780-48-0x00000000075D0000-0x00000000075EA000-memory.dmp
      Filesize

      104KB

    • memory/1780-47-0x0000000007580000-0x0000000007595000-memory.dmp
      Filesize

      84KB

    • memory/1780-46-0x0000000007570000-0x000000000757E000-memory.dmp
      Filesize

      56KB

    • memory/1780-45-0x0000000007520000-0x0000000007531000-memory.dmp
      Filesize

      68KB

    • memory/1780-44-0x0000000007610000-0x00000000076A6000-memory.dmp
      Filesize

      600KB

    • memory/1780-43-0x0000000007500000-0x000000000750A000-memory.dmp
      Filesize

      40KB

    • memory/1780-42-0x00000000074C0000-0x00000000074DA000-memory.dmp
      Filesize

      104KB

    • memory/1780-9-0x0000000005170000-0x0000000005192000-memory.dmp
      Filesize

      136KB

    • memory/1780-11-0x00000000059C0000-0x0000000005A26000-memory.dmp
      Filesize

      408KB

    • memory/1780-41-0x0000000007B00000-0x000000000817A000-memory.dmp
      Filesize

      6.5MB

    • memory/1780-40-0x0000000007390000-0x0000000007434000-memory.dmp
      Filesize

      656KB

    • memory/1780-28-0x0000000004BF0000-0x0000000004C00000-memory.dmp
      Filesize

      64KB

    • memory/1780-10-0x0000000005950000-0x00000000059B6000-memory.dmp
      Filesize

      408KB

    • memory/1780-20-0x0000000005A30000-0x0000000005D87000-memory.dmp
      Filesize

      3.3MB

    • memory/1780-21-0x0000000005F10000-0x0000000005F2E000-memory.dmp
      Filesize

      120KB

    • memory/1780-52-0x0000000074830000-0x0000000074FE1000-memory.dmp
      Filesize

      7.7MB

    • memory/1780-22-0x0000000005F60000-0x0000000005FAC000-memory.dmp
      Filesize

      304KB

    • memory/1780-39-0x0000000007370000-0x000000000738E000-memory.dmp
      Filesize

      120KB

    • memory/1780-23-0x0000000006460000-0x00000000064A6000-memory.dmp
      Filesize

      280KB

    • memory/1780-25-0x000000007F6B0000-0x000000007F6C0000-memory.dmp
      Filesize

      64KB

    • memory/1780-24-0x0000000007310000-0x0000000007344000-memory.dmp
      Filesize

      208KB

    • memory/1780-26-0x0000000070AA0000-0x0000000070AEC000-memory.dmp
      Filesize

      304KB

    • memory/1780-27-0x0000000070C20000-0x0000000070F77000-memory.dmp
      Filesize

      3.3MB

    • memory/1844-136-0x0000000070AA0000-0x0000000070AEC000-memory.dmp
      Filesize

      304KB

    • memory/1844-137-0x0000000070C20000-0x0000000070F77000-memory.dmp
      Filesize

      3.3MB

    • memory/2240-147-0x0000000000400000-0x0000000001DFB000-memory.dmp
      Filesize

      26.0MB

    • memory/2612-110-0x0000000070AA0000-0x0000000070AEC000-memory.dmp
      Filesize

      304KB

    • memory/2612-111-0x0000000070C20000-0x0000000070F77000-memory.dmp
      Filesize

      3.3MB

    • memory/4504-162-0x00000000709C0000-0x0000000070A0C000-memory.dmp
      Filesize

      304KB

    • memory/4504-159-0x0000000005C80000-0x0000000005FD7000-memory.dmp
      Filesize

      3.3MB

    • memory/4504-161-0x0000000006340000-0x000000000638C000-memory.dmp
      Filesize

      304KB

    • memory/4504-175-0x0000000006000000-0x0000000006015000-memory.dmp
      Filesize

      84KB

    • memory/4504-163-0x0000000070B40000-0x0000000070E97000-memory.dmp
      Filesize

      3.3MB

    • memory/4504-172-0x0000000007440000-0x00000000074E4000-memory.dmp
      Filesize

      656KB

    • memory/4504-174-0x00000000077E0000-0x00000000077F1000-memory.dmp
      Filesize

      68KB

    • memory/4776-74-0x00000000072E0000-0x00000000072F5000-memory.dmp
      Filesize

      84KB

    • memory/4776-73-0x0000000007290000-0x00000000072A1000-memory.dmp
      Filesize

      68KB

    • memory/4776-72-0x0000000006F90000-0x0000000007034000-memory.dmp
      Filesize

      656KB

    • memory/4776-62-0x0000000070AA0000-0x0000000070AEC000-memory.dmp
      Filesize

      304KB

    • memory/4776-63-0x0000000070C20000-0x0000000070F77000-memory.dmp
      Filesize

      3.3MB