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Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/02/2023, 05:32

General

  • Target

    ad166d6ef2481d13123759c4108a340783e625c8f1f46b69e31e3bb1687211f7.exe

  • Size

    4.0MB

  • MD5

    e43e3e6e23c766cdb4832717c9416fe8

  • SHA1

    2200cee442b5ecbd77ebf41a62dfdd3bf721feb0

  • SHA256

    ad166d6ef2481d13123759c4108a340783e625c8f1f46b69e31e3bb1687211f7

  • SHA512

    2c68de612ff98697de369d5a0f13e196354d5af786efa29e56e6579d9f39b1c6e96bd0629bee386e8b50cd27d8bfee61875d31fe14a6da8b1539f8d0566c68d6

  • SSDEEP

    98304:L9YCg++YKOdZDddolxv8qlw2pKpnPHjR+G:5g+Z1dBDI9PyaoAG

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\ad166d6ef2481d13123759c4108a340783e625c8f1f46b69e31e3bb1687211f7.exe
    "C:\Users\Admin\AppData\Local\Temp\ad166d6ef2481d13123759c4108a340783e625c8f1f46b69e31e3bb1687211f7.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:3304
    • C:\Users\Admin\AppData\Local\Temp\ad166d6ef2481d13123759c4108a340783e625c8f1f46b69e31e3bb1687211f7.exe
      "C:\Users\Admin\AppData\Local\Temp\ad166d6ef2481d13123759c4108a340783e625c8f1f46b69e31e3bb1687211f7.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:1492
      • 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:1552
        • 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:2272
      • 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:672
        • 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:2252
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:260
          • 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:3756
          • 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:4864
    • 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:3056

    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

      4.0MB

      MD5

      e43e3e6e23c766cdb4832717c9416fe8

      SHA1

      2200cee442b5ecbd77ebf41a62dfdd3bf721feb0

      SHA256

      ad166d6ef2481d13123759c4108a340783e625c8f1f46b69e31e3bb1687211f7

      SHA512

      2c68de612ff98697de369d5a0f13e196354d5af786efa29e56e6579d9f39b1c6e96bd0629bee386e8b50cd27d8bfee61875d31fe14a6da8b1539f8d0566c68d6

    • C:\Windows\rss\csrss.exe

      Filesize

      4.0MB

      MD5

      e43e3e6e23c766cdb4832717c9416fe8

      SHA1

      2200cee442b5ecbd77ebf41a62dfdd3bf721feb0

      SHA256

      ad166d6ef2481d13123759c4108a340783e625c8f1f46b69e31e3bb1687211f7

      SHA512

      2c68de612ff98697de369d5a0f13e196354d5af786efa29e56e6579d9f39b1c6e96bd0629bee386e8b50cd27d8bfee61875d31fe14a6da8b1539f8d0566c68d6

    • memory/672-147-0x0000000002E00000-0x00000000031E9000-memory.dmp

      Filesize

      3.9MB

    • memory/672-153-0x0000000000400000-0x0000000000C91000-memory.dmp

      Filesize

      8.6MB

    • memory/672-148-0x0000000000400000-0x0000000000C91000-memory.dmp

      Filesize

      8.6MB

    • memory/1492-140-0x0000000000400000-0x0000000000C91000-memory.dmp

      Filesize

      8.6MB

    • memory/1492-139-0x000000000283F000-0x0000000002C28000-memory.dmp

      Filesize

      3.9MB

    • memory/1492-144-0x0000000000400000-0x0000000000C91000-memory.dmp

      Filesize

      8.6MB

    • memory/3304-132-0x0000000002B4E000-0x0000000002F37000-memory.dmp

      Filesize

      3.9MB

    • memory/3304-136-0x0000000000400000-0x0000000000C91000-memory.dmp

      Filesize

      8.6MB

    • memory/3304-134-0x0000000000400000-0x0000000000C91000-memory.dmp

      Filesize

      8.6MB

    • memory/3304-133-0x0000000002F40000-0x00000000037B7000-memory.dmp

      Filesize

      8.5MB