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Analysis

  • max time kernel
    174s
  • max time network
    180s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/02/2023, 08:19

General

  • Target

    8574b00513985b99d716f5f72260a484c2c781af49bcd24da0a94d3926374eb9.exe

  • Size

    4.2MB

  • MD5

    db24152012b6e4a2fdb8fea97c570cf0

  • SHA1

    21fcc7fb0d794a541ae0c72371366016d4aeebf9

  • SHA256

    8574b00513985b99d716f5f72260a484c2c781af49bcd24da0a94d3926374eb9

  • SHA512

    07a61d4ff7db759f349931735a49f94979b2f4fedf46ccdac54499478a8f0843d2ef4a72209fad68d490d479b1ebdaea1a8b7419cad59cd79e7ca15c85bf928c

  • SSDEEP

    98304:F7x+bmWuh0xtZR3jppzMVwVah9Typ7oz4zG4bT:ubo0v3jppEwVc9up7g4h

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\8574b00513985b99d716f5f72260a484c2c781af49bcd24da0a94d3926374eb9.exe
    "C:\Users\Admin\AppData\Local\Temp\8574b00513985b99d716f5f72260a484c2c781af49bcd24da0a94d3926374eb9.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:5072
    • C:\Users\Admin\AppData\Local\Temp\8574b00513985b99d716f5f72260a484c2c781af49bcd24da0a94d3926374eb9.exe
      "C:\Users\Admin\AppData\Local\Temp\8574b00513985b99d716f5f72260a484c2c781af49bcd24da0a94d3926374eb9.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:3752
      • 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:4368
        • 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:4904
      • 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:4208
        • 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:2292
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:3756
          • 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:932
          • 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:1912
    • 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:3852

    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

      db24152012b6e4a2fdb8fea97c570cf0

      SHA1

      21fcc7fb0d794a541ae0c72371366016d4aeebf9

      SHA256

      8574b00513985b99d716f5f72260a484c2c781af49bcd24da0a94d3926374eb9

      SHA512

      07a61d4ff7db759f349931735a49f94979b2f4fedf46ccdac54499478a8f0843d2ef4a72209fad68d490d479b1ebdaea1a8b7419cad59cd79e7ca15c85bf928c

    • C:\Windows\rss\csrss.exe

      Filesize

      4.2MB

      MD5

      db24152012b6e4a2fdb8fea97c570cf0

      SHA1

      21fcc7fb0d794a541ae0c72371366016d4aeebf9

      SHA256

      8574b00513985b99d716f5f72260a484c2c781af49bcd24da0a94d3926374eb9

      SHA512

      07a61d4ff7db759f349931735a49f94979b2f4fedf46ccdac54499478a8f0843d2ef4a72209fad68d490d479b1ebdaea1a8b7419cad59cd79e7ca15c85bf928c

    • memory/3752-145-0x0000000000400000-0x0000000000C91000-memory.dmp

      Filesize

      8.6MB

    • memory/3752-139-0x0000000002A48000-0x0000000002E31000-memory.dmp

      Filesize

      3.9MB

    • memory/3752-141-0x0000000000400000-0x0000000000C91000-memory.dmp

      Filesize

      8.6MB

    • memory/4208-148-0x0000000002E00000-0x00000000031E9000-memory.dmp

      Filesize

      3.9MB

    • memory/4208-149-0x0000000000400000-0x0000000000C91000-memory.dmp

      Filesize

      8.6MB

    • memory/4208-154-0x0000000000400000-0x0000000000C91000-memory.dmp

      Filesize

      8.6MB

    • memory/5072-133-0x0000000002C15000-0x0000000002FFE000-memory.dmp

      Filesize

      3.9MB

    • memory/5072-137-0x0000000000400000-0x0000000000C91000-memory.dmp

      Filesize

      8.6MB

    • memory/5072-135-0x0000000000400000-0x0000000000C91000-memory.dmp

      Filesize

      8.6MB

    • memory/5072-134-0x0000000003000000-0x0000000003877000-memory.dmp

      Filesize

      8.5MB