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Analysis

  • max time kernel
    175s
  • max time network
    177s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/12/2022, 09:07

General

  • Target

    1a252aca8dd53842529529aff8eafa6ccb495a7c7efd0ef7b421bb8d34261b38.exe

  • Size

    296KB

  • MD5

    5ca14e99d748f71d726d813bf574b11e

  • SHA1

    fb3eb15fb5d97236625591fd6511459019b8214f

  • SHA256

    1a252aca8dd53842529529aff8eafa6ccb495a7c7efd0ef7b421bb8d34261b38

  • SHA512

    be208be98964ee7b2ece5c0a2e5207b7e34406b4b23638168e6185a32dd2f6cf437bc908f39e15c81921174e14e4cc52969e3004ceabb458787eec38faa1a947

  • SSDEEP

    6144:IoOeH4vkd5jIxRFKA5tl1mnLZrWz3ZnnW/Mq3gg+FGtFrKs0MjDTQP/6oHp:IfeH4K5jal4yW/MMnwGtFmsy3P

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 50 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
      PID:2384
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
      1⤵
        PID:2456
      • C:\Windows\System32\RuntimeBroker.exe
        C:\Windows\System32\RuntimeBroker.exe -Embedding
        1⤵
          PID:3424
        • C:\Windows\System32\RuntimeBroker.exe
          C:\Windows\System32\RuntimeBroker.exe -Embedding
          1⤵
            PID:4648
          • C:\Windows\System32\RuntimeBroker.exe
            C:\Windows\System32\RuntimeBroker.exe -Embedding
            1⤵
              PID:3696
            • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
              "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
              1⤵
                PID:3516
              • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                1⤵
                  PID:3364
                • C:\Windows\system32\DllHost.exe
                  C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                  1⤵
                    PID:3272
                  • C:\Windows\system32\svchost.exe
                    C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                    1⤵
                      PID:2780
                    • C:\Windows\Explorer.EXE
                      C:\Windows\Explorer.EXE
                      1⤵
                        PID:2484
                        • C:\Users\Admin\AppData\Local\Temp\1a252aca8dd53842529529aff8eafa6ccb495a7c7efd0ef7b421bb8d34261b38.exe
                          "C:\Users\Admin\AppData\Local\Temp\1a252aca8dd53842529529aff8eafa6ccb495a7c7efd0ef7b421bb8d34261b38.exe"
                          2⤵
                          • Suspicious use of SetThreadContext
                          • Suspicious use of WriteProcessMemory
                          PID:440
                          • C:\Users\Admin\AppData\Roaming\Yrxae\iryn.exe
                            "C:\Users\Admin\AppData\Roaming\Yrxae\iryn.exe"
                            3⤵
                            • Executes dropped EXE
                            • Adds Run key to start application
                            • Suspicious behavior: EnumeratesProcesses
                            • Suspicious use of WriteProcessMemory
                            PID:4888
                          • C:\Windows\SysWOW64\cmd.exe
                            "C:\Windows\system32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\LEO34A7.bat"
                            3⤵
                              PID:2288
                        • C:\Windows\system32\taskhostw.exe
                          taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                          1⤵
                            PID:2756

                          Network

                          MITRE ATT&CK Enterprise v6

                          Replay Monitor

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                          Downloads

                          • C:\Users\Admin\AppData\Local\Temp\LEO34A7.bat

                            Filesize

                            303B

                            MD5

                            7daa21406a05f4f0bac259152c29299d

                            SHA1

                            5c5e61ee71bdfaff34dfd116001894bd307b5073

                            SHA256

                            674e52e892302c608159467017741a9996cd8af55396e08277f86e5f62a73985

                            SHA512

                            8b52dbae03c8cb653b844126aad2687fffdd26a6561934d73bea4bfa302a04be705e0a2da019796dbd3638d9fe9f833eeb0c2628539403d775ddbaed7944d29e

                          • C:\Users\Admin\AppData\Roaming\Yrxae\iryn.exe

                            Filesize

                            296KB

                            MD5

                            103661c12a3edea200cdb39a93baa7a8

                            SHA1

                            5d00165b7dd962c6b60b075c2072571eb9c068ee

                            SHA256

                            f678f6c34cdd23baec1cfeffe4c64ebfbe169b6cec746797a9c4040e75f2f6a7

                            SHA512

                            c673dfcadfd9fdf49ae5b9f778d169f44154a6953208581b60798723434f74dd581f81da7d4087c00496c5342f5c4dcf621db94d2e7185c130ac54edb48cee44

                          • C:\Users\Admin\AppData\Roaming\Yrxae\iryn.exe

                            Filesize

                            296KB

                            MD5

                            103661c12a3edea200cdb39a93baa7a8

                            SHA1

                            5d00165b7dd962c6b60b075c2072571eb9c068ee

                            SHA256

                            f678f6c34cdd23baec1cfeffe4c64ebfbe169b6cec746797a9c4040e75f2f6a7

                            SHA512

                            c673dfcadfd9fdf49ae5b9f778d169f44154a6953208581b60798723434f74dd581f81da7d4087c00496c5342f5c4dcf621db94d2e7185c130ac54edb48cee44

                          • memory/440-145-0x000000006FFF0000-0x0000000070000000-memory.dmp

                            Filesize

                            64KB

                          • memory/440-155-0x0000000002240000-0x0000000002289000-memory.dmp

                            Filesize

                            292KB

                          • memory/440-133-0x0000000000401000-0x0000000000442000-memory.dmp

                            Filesize

                            260KB

                          • memory/440-139-0x000000006FFF0000-0x0000000070000000-memory.dmp

                            Filesize

                            64KB

                          • memory/440-140-0x000000006FFF0000-0x0000000070000000-memory.dmp

                            Filesize

                            64KB

                          • memory/440-141-0x0000000002240000-0x0000000002289000-memory.dmp

                            Filesize

                            292KB

                          • memory/440-142-0x000000006FFF0000-0x0000000070000000-memory.dmp

                            Filesize

                            64KB

                          • memory/440-143-0x000000006FFF0000-0x0000000070000000-memory.dmp

                            Filesize

                            64KB

                          • memory/440-144-0x000000006FFF0000-0x0000000070000000-memory.dmp

                            Filesize

                            64KB

                          • memory/440-132-0x0000000000400000-0x000000000044C000-memory.dmp

                            Filesize

                            304KB

                          • memory/2288-147-0x0000000000790000-0x00000000007D9000-memory.dmp

                            Filesize

                            292KB

                          • memory/2288-149-0x000000006FFF0000-0x0000000070000000-memory.dmp

                            Filesize

                            64KB

                          • memory/2288-148-0x000000006FFF0000-0x0000000070000000-memory.dmp

                            Filesize

                            64KB

                          • memory/2288-151-0x000000006FFF0000-0x0000000070000000-memory.dmp

                            Filesize

                            64KB

                          • memory/2288-152-0x000000006FFF0000-0x0000000070000000-memory.dmp

                            Filesize

                            64KB

                          • memory/2288-150-0x000000006FFF0000-0x0000000070000000-memory.dmp

                            Filesize

                            64KB

                          • memory/2288-153-0x000000006FFF0000-0x0000000070000000-memory.dmp

                            Filesize

                            64KB

                          • memory/2288-154-0x000000006FFF0000-0x0000000070000000-memory.dmp

                            Filesize

                            64KB

                          • memory/2288-156-0x0000000000790000-0x00000000007D9000-memory.dmp

                            Filesize

                            292KB

                          • memory/4888-137-0x0000000000400000-0x000000000044C000-memory.dmp

                            Filesize

                            304KB