Analysis

  • max time kernel
    151s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-02-2023 12:22

General

  • Target

    891f4a94ded87753dc7a2164c74eeb3211cd4a9de8779d2b0d90ff94c67abff9.exe

  • Size

    4.2MB

  • MD5

    d03b4f3a82d147de9b6c64b5fc9fa973

  • SHA1

    b45c07d06e8eb904065198680046b703a8690def

  • SHA256

    891f4a94ded87753dc7a2164c74eeb3211cd4a9de8779d2b0d90ff94c67abff9

  • SHA512

    f6fda08eb7da02f7ad937901a8f67f37e73b81f5657a0944107c47489e97a0a6480fecaf0632487b0d938e086a378f0074f8c59300f76d1a24cbbd1c4baf0f8d

  • SSDEEP

    98304:r2/L8tU2s0k0DghZAV+7dczDPk3U40Y6Ec:ML8E0kugMVQczs6r

Malware Config

Signatures

  • Glupteba

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

  • Suspicious use of NtCreateUserProcessOtherParentProcess 4 IoCs
  • Modifies Windows Firewall 1 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.

  • 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 17 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\891f4a94ded87753dc7a2164c74eeb3211cd4a9de8779d2b0d90ff94c67abff9.exe
    "C:\Users\Admin\AppData\Local\Temp\891f4a94ded87753dc7a2164c74eeb3211cd4a9de8779d2b0d90ff94c67abff9.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:4824
    • C:\Users\Admin\AppData\Local\Temp\891f4a94ded87753dc7a2164c74eeb3211cd4a9de8779d2b0d90ff94c67abff9.exe
      "C:\Users\Admin\AppData\Local\Temp\891f4a94ded87753dc7a2164c74eeb3211cd4a9de8779d2b0d90ff94c67abff9.exe"
      2⤵
      • Adds Run key to start application
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2796
      • 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:4072
        • 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:4872
      • C:\Windows\rss\csrss.exe
        C:\Windows\rss\csrss.exe
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2168
        • 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:4260
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:3640
          • 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:1984
          • 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:4360
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k netsvcs -p -s seclogon
      1⤵
      • Suspicious use of NtCreateUserProcessOtherParentProcess
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:896

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe

      Filesize

      281KB

      MD5

      d98e33b66343e7c96158444127a117f6

      SHA1

      bb716c5509a2bf345c6c1152f6e3e1452d39d50d

      SHA256

      5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

      SHA512

      705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

    • C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe

      Filesize

      281KB

      MD5

      d98e33b66343e7c96158444127a117f6

      SHA1

      bb716c5509a2bf345c6c1152f6e3e1452d39d50d

      SHA256

      5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

      SHA512

      705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

    • C:\Windows\rss\csrss.exe

      Filesize

      4.2MB

      MD5

      d03b4f3a82d147de9b6c64b5fc9fa973

      SHA1

      b45c07d06e8eb904065198680046b703a8690def

      SHA256

      891f4a94ded87753dc7a2164c74eeb3211cd4a9de8779d2b0d90ff94c67abff9

      SHA512

      f6fda08eb7da02f7ad937901a8f67f37e73b81f5657a0944107c47489e97a0a6480fecaf0632487b0d938e086a378f0074f8c59300f76d1a24cbbd1c4baf0f8d

    • C:\Windows\rss\csrss.exe

      Filesize

      4.2MB

      MD5

      d03b4f3a82d147de9b6c64b5fc9fa973

      SHA1

      b45c07d06e8eb904065198680046b703a8690def

      SHA256

      891f4a94ded87753dc7a2164c74eeb3211cd4a9de8779d2b0d90ff94c67abff9

      SHA512

      f6fda08eb7da02f7ad937901a8f67f37e73b81f5657a0944107c47489e97a0a6480fecaf0632487b0d938e086a378f0074f8c59300f76d1a24cbbd1c4baf0f8d

    • memory/1984-152-0x0000000000000000-mapping.dmp

    • memory/2168-148-0x0000000000400000-0x0000000000C91000-memory.dmp

      Filesize

      8.6MB

    • memory/2168-147-0x0000000002E00000-0x00000000031E9000-memory.dmp

      Filesize

      3.9MB

    • memory/2168-143-0x0000000000000000-mapping.dmp

    • memory/2168-151-0x0000000000400000-0x0000000000C91000-memory.dmp

      Filesize

      8.6MB

    • memory/2796-137-0x0000000000000000-mapping.dmp

    • memory/2796-146-0x0000000000400000-0x0000000000C91000-memory.dmp

      Filesize

      8.6MB

    • memory/2796-141-0x00000000029E7000-0x0000000002DD0000-memory.dmp

      Filesize

      3.9MB

    • memory/2796-142-0x0000000000400000-0x0000000000C91000-memory.dmp

      Filesize

      8.6MB

    • memory/3640-150-0x0000000000000000-mapping.dmp

    • memory/4072-139-0x0000000000000000-mapping.dmp

    • memory/4260-149-0x0000000000000000-mapping.dmp

    • memory/4360-155-0x0000000000000000-mapping.dmp

    • memory/4824-138-0x0000000000400000-0x0000000000C91000-memory.dmp

      Filesize

      8.6MB

    • memory/4824-132-0x00000000029F7000-0x0000000002DE0000-memory.dmp

      Filesize

      3.9MB

    • memory/4824-136-0x0000000002DF0000-0x0000000003667000-memory.dmp

      Filesize

      8.5MB

    • memory/4824-135-0x00000000029F7000-0x0000000002DE0000-memory.dmp

      Filesize

      3.9MB

    • memory/4824-134-0x0000000000400000-0x0000000000C91000-memory.dmp

      Filesize

      8.6MB

    • memory/4824-133-0x0000000002DF0000-0x0000000003667000-memory.dmp

      Filesize

      8.5MB

    • memory/4872-140-0x0000000000000000-mapping.dmp