Analysis

  • max time kernel
    147s
  • max time network
    147s
  • platform
    windows10-1703_x64
  • resource
    win10-20220812-en
  • resource tags

    arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
  • submitted
    02-02-2023 13:52

General

  • Target

    221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe

  • Size

    4.1MB

  • MD5

    a8f59c9814b70f8ee0ca2c30c0112afb

  • SHA1

    24f1618d466d601b3d0c7ab1b41411d100a0e3bd

  • SHA256

    221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f

  • SHA512

    414b8138a08189a4e8552e5e52a36b005cd4dbdefffbb267568106080a857a5f8e502302f2a9dfaa111d701e521d3b09ca15457f4e8ecd483187feaedc9dd3d5

  • SSDEEP

    98304:v8+tOgQNJoxnPTtSIZTCNfXKCvPF8rRb7pumT7qb7g:0+tcNJoRPT1ZTCldHWnpumTsg

Malware Config

Signatures

  • Glupteba

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

  • Windows security bypass 2 TTPs 7 IoCs
  • Executes dropped EXE 3 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Windows security modification 2 TTPs 7 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 3 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe
    "C:\Users\Admin\AppData\Local\Temp\221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:4936
    • C:\Users\Admin\AppData\Local\Temp\221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe
      "C:\Users\Admin\AppData\Local\Temp\221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f.exe"
      2⤵
      • Windows security bypass
      • Windows security modification
      • Adds Run key to start application
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4212
      • 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:3152
        • 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
          • Modifies data under HKEY_USERS
          PID:4684
      • 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:4728
        • 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:220
        • C:\Windows\SYSTEM32\schtasks.exe
          schtasks /delete /tn ScheduledUpdate /f
          4⤵
            PID:3376
          • 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:2252
          • 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:848
          • C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe
            C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe
            4⤵
            • Executes dropped EXE
            PID:4944
            • C:\Windows\SYSTEM32\schtasks.exe
              schtasks /delete /tn "csrss" /f
              5⤵
                PID:1296
              • C:\Windows\SYSTEM32\schtasks.exe
                schtasks /delete /tn "ScheduledUpdate" /f
                5⤵
                  PID:3824

        Network

        MITRE ATT&CK Matrix ATT&CK v6

        Execution

        Scheduled Task

        1
        T1053

        Persistence

        Modify Existing Service

        1
        T1031

        Registry Run Keys / Startup Folder

        1
        T1060

        Scheduled Task

        1
        T1053

        Privilege Escalation

        Scheduled Task

        1
        T1053

        Defense Evasion

        Disabling Security Tools

        2
        T1089

        Modify Registry

        3
        T1112

        Discovery

        Query Registry

        1
        T1012

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe
          Filesize

          3.2MB

          MD5

          f801950a962ddba14caaa44bf084b55c

          SHA1

          7cadc9076121297428442785536ba0df2d4ae996

          SHA256

          c3946ec89e15b24b743c46f9acacb58cff47da63f3ce2799d71ed90496b8891f

          SHA512

          4183bc76bdc84fb779e2e573d9a63d7de47096b63b945f9e335bee95ae28eb208f5ee15f6501ac59623b97c5b77f3455ca313512e7d9803e1704ae22a52459c5

        • C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe
          Filesize

          3.2MB

          MD5

          f801950a962ddba14caaa44bf084b55c

          SHA1

          7cadc9076121297428442785536ba0df2d4ae996

          SHA256

          c3946ec89e15b24b743c46f9acacb58cff47da63f3ce2799d71ed90496b8891f

          SHA512

          4183bc76bdc84fb779e2e573d9a63d7de47096b63b945f9e335bee95ae28eb208f5ee15f6501ac59623b97c5b77f3455ca313512e7d9803e1704ae22a52459c5

        • C:\Users\Admin\AppData\Local\Temp\csrss\injector\NtQuerySystemInformationHook.dll
          Filesize

          99KB

          MD5

          09031a062610d77d685c9934318b4170

          SHA1

          880f744184e7774f3d14c1bb857e21cc7fe89a6d

          SHA256

          778bd69af403df3c4e074c31b3850d71bf0e64524bea4272a802ca9520b379dd

          SHA512

          9a276e1f0f55d35f2bf38eb093464f7065bdd30a660e6d1c62eed5e76d1fb2201567b89d9ae65d2d89dc99b142159e36fb73be8d5e08252a975d50544a7cda27

        • 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

          4.1MB

          MD5

          a8f59c9814b70f8ee0ca2c30c0112afb

          SHA1

          24f1618d466d601b3d0c7ab1b41411d100a0e3bd

          SHA256

          221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f

          SHA512

          414b8138a08189a4e8552e5e52a36b005cd4dbdefffbb267568106080a857a5f8e502302f2a9dfaa111d701e521d3b09ca15457f4e8ecd483187feaedc9dd3d5

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

          4.1MB

          MD5

          a8f59c9814b70f8ee0ca2c30c0112afb

          SHA1

          24f1618d466d601b3d0c7ab1b41411d100a0e3bd

          SHA256

          221f7a1936cab2179b7359d06c6b37952fb97648595ee8a72b409ef73385013f

          SHA512

          414b8138a08189a4e8552e5e52a36b005cd4dbdefffbb267568106080a857a5f8e502302f2a9dfaa111d701e521d3b09ca15457f4e8ecd483187feaedc9dd3d5

        • memory/2252-374-0x0000000000000000-mapping.dmp
        • memory/3152-294-0x0000000000000000-mapping.dmp
        • memory/4212-301-0x0000000000400000-0x0000000000C91000-memory.dmp
          Filesize

          8.6MB

        • memory/4212-265-0x00000000029A0000-0x0000000002D8B000-memory.dmp
          Filesize

          3.9MB

        • memory/4212-296-0x0000000000400000-0x0000000000C91000-memory.dmp
          Filesize

          8.6MB

        • memory/4684-295-0x0000000000000000-mapping.dmp
        • memory/4728-367-0x0000000000400000-0x0000000000C91000-memory.dmp
          Filesize

          8.6MB

        • memory/4728-366-0x0000000003000000-0x00000000033EA000-memory.dmp
          Filesize

          3.9MB

        • memory/4728-448-0x0000000000400000-0x0000000000C91000-memory.dmp
          Filesize

          8.6MB

        • memory/4728-380-0x0000000003000000-0x00000000033EA000-memory.dmp
          Filesize

          3.9MB

        • memory/4728-298-0x0000000000000000-mapping.dmp
        • memory/4728-381-0x0000000000400000-0x0000000000C91000-memory.dmp
          Filesize

          8.6MB

        • memory/4936-131-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-173-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-139-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-137-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-116-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-141-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-143-0x0000000002AA0000-0x0000000002E92000-memory.dmp
          Filesize

          3.9MB

        • memory/4936-142-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-145-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-144-0x0000000002EA0000-0x0000000003717000-memory.dmp
          Filesize

          8.5MB

        • memory/4936-146-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-147-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-148-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-149-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-150-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-151-0x0000000000400000-0x0000000000C91000-memory.dmp
          Filesize

          8.6MB

        • memory/4936-152-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-153-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-154-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-155-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-156-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-157-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-158-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-159-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-160-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-161-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-162-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-163-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-164-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-165-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-166-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-167-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-168-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-169-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-170-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-171-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-172-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-138-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-174-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-175-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-176-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-177-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-178-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-179-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-180-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-181-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-182-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-183-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-243-0x0000000000400000-0x0000000000C91000-memory.dmp
          Filesize

          8.6MB

        • memory/4936-246-0x0000000002EA0000-0x0000000003717000-memory.dmp
          Filesize

          8.5MB

        • memory/4936-136-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-135-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-134-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-133-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-132-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-130-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-129-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-128-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-127-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-126-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-125-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-124-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-123-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-122-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-121-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-120-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-117-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-119-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4936-118-0x0000000077520000-0x00000000776AE000-memory.dmp
          Filesize

          1.6MB

        • memory/4944-423-0x0000000000400000-0x0000000000C25000-memory.dmp
          Filesize

          8.1MB

        • memory/4944-466-0x0000000000400000-0x0000000000C25000-memory.dmp
          Filesize

          8.1MB

        • memory/4944-408-0x0000000000000000-mapping.dmp
        • memory/4944-468-0x0000000000400000-0x0000000000C25000-memory.dmp
          Filesize

          8.1MB