Analysis

  • max time kernel
    149s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-11-2024 16:04

General

  • Target

    setup_installer.exe

  • Size

    1.9MB

  • MD5

    b2f70eb858dfaec80293b9b64e3f27e4

  • SHA1

    eef1eddd4cd6f35a9af2f7b8da646bc30d7a1e5a

  • SHA256

    b1914ff05df9f8bb2945b6a426ab944b9847686b50f7137f3e04d045966c05ff

  • SHA512

    367068e5b12ac20014cff3defc4c62b5fad4064e133da621a68ea9d31f2baeb3c8f2c5ab0c3cd6cd6a163b09a4e8142ac28db2fdbbd8a29c5aa1dc8fbcbfd324

  • SSDEEP

    49152:xcBxvy10E+QMWcLctpCOOeWAbaW44EwJ84vLRaBtIl9mTI+MAYs:xU4MWcApaeW9FvCvLUBsKITds

Malware Config

Extracted

Family

nullmixer

C2

http://wxkeww.xyz/

Signatures

  • Modifies Windows Defender Real-time Protection settings 3 TTPs 7 IoCs
  • NullMixer

    NullMixer is a malware dropper leading to an infection chain of a wide variety of malware families.

  • Nullmixer family
  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • ASPack v2.12-2.42 4 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 7 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Looks up external IP address via web service 4 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory 4 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies data under HKEY_USERS 1 IoCs
  • Modifies registry class 10 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k netsvcs -p -s gpsvc
    1⤵
    • Suspicious use of SetThreadContext
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:760
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k SystemNetworkService
      2⤵
      • Modifies registry class
      PID:2844
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k netsvcs -p -s Schedule
    1⤵
    • Drops file in System32 directory
    PID:1160
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k netsvcs -p -s ProfSvc
    1⤵
      PID:1224
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k netsvcs -p -s UserManager
      1⤵
        PID:1408
      • C:\Windows\System32\svchost.exe
        C:\Windows\System32\svchost.exe -k netsvcs -p -s Themes
        1⤵
          PID:1572
        • C:\Windows\system32\svchost.exe
          C:\Windows\system32\svchost.exe -k netsvcs -p -s SENS
          1⤵
            PID:1696
          • C:\Windows\System32\svchost.exe
            C:\Windows\System32\svchost.exe -k netsvcs -p -s ShellHWDetection
            1⤵
              PID:1740
            • C:\Windows\system32\svchost.exe
              C:\Windows\system32\svchost.exe -k netsvcs -p -s Winmgmt
              1⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:2152
            • C:\Windows\system32\svchost.exe
              C:\Windows\system32\svchost.exe -k netsvcs -p -s IKEEXT
              1⤵
                PID:2552
              • C:\Windows\system32\svchost.exe
                C:\Windows\system32\svchost.exe -k netsvcs -p -s LanmanServer
                1⤵
                • Enumerates connected drives
                PID:2812
              • C:\Windows\system32\svchost.exe
                C:\Windows\system32\svchost.exe -k netsvcs -p -s TokenBroker
                1⤵
                  PID:2848
                • C:\Windows\system32\svchost.exe
                  C:\Windows\system32\svchost.exe -k netsvcs -p -s WpnService
                  1⤵
                  • Modifies registry class
                  PID:2868
                • C:\Windows\system32\svchost.exe
                  C:\Windows\system32\svchost.exe -k netsvcs -p -s wlidsvc
                  1⤵
                  • Modifies data under HKEY_USERS
                  PID:4432
                • C:\Users\Admin\AppData\Local\Temp\setup_installer.exe
                  "C:\Users\Admin\AppData\Local\Temp\setup_installer.exe"
                  1⤵
                  • Checks computer location settings
                  • System Location Discovery: System Language Discovery
                  • Suspicious use of WriteProcessMemory
                  PID:2240
                  • C:\Users\Admin\AppData\Local\Temp\7zS0C854E97\setup_install.exe
                    "C:\Users\Admin\AppData\Local\Temp\7zS0C854E97\setup_install.exe"
                    2⤵
                    • Executes dropped EXE
                    • Loads dropped DLL
                    • System Location Discovery: System Language Discovery
                    • Suspicious use of WriteProcessMemory
                    PID:3640
                    • C:\Windows\SysWOW64\cmd.exe
                      C:\Windows\system32\cmd.exe /c karotima_1.exe
                      3⤵
                      • System Location Discovery: System Language Discovery
                      • Suspicious use of WriteProcessMemory
                      PID:2068
                      • C:\Users\Admin\AppData\Local\Temp\7zS0C854E97\karotima_1.exe
                        karotima_1.exe
                        4⤵
                        • Modifies Windows Defender Real-time Protection settings
                        • Executes dropped EXE
                        • System Location Discovery: System Language Discovery
                        PID:4428
                    • C:\Windows\SysWOW64\cmd.exe
                      C:\Windows\system32\cmd.exe /c karotima_2.exe
                      3⤵
                      • System Location Discovery: System Language Discovery
                      • Suspicious use of WriteProcessMemory
                      PID:2364
                      • C:\Users\Admin\AppData\Local\Temp\7zS0C854E97\karotima_2.exe
                        karotima_2.exe
                        4⤵
                        • Checks computer location settings
                        • Executes dropped EXE
                        • System Location Discovery: System Language Discovery
                        • Suspicious use of WriteProcessMemory
                        PID:1872
                        • C:\Users\Admin\AppData\Local\Temp\7zS0C854E97\karotima_2.exe
                          "C:\Users\Admin\AppData\Local\Temp\7zS0C854E97\karotima_2.exe" -a
                          5⤵
                          • Executes dropped EXE
                          • System Location Discovery: System Language Discovery
                          PID:1548
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -u -p 3640 -s 500
                      3⤵
                      • Program crash
                      PID:432
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3640 -ip 3640
                  1⤵
                    PID:1600
                  • C:\Windows\system32\rUNdlL32.eXe
                    rUNdlL32.eXe "C:\Users\Admin\AppData\Local\Temp\axhub.dll",main
                    1⤵
                    • Process spawned unexpected child process
                    • Suspicious use of WriteProcessMemory
                    PID:4552
                    • C:\Windows\SysWOW64\rundll32.exe
                      rUNdlL32.eXe "C:\Users\Admin\AppData\Local\Temp\axhub.dll",main
                      2⤵
                      • Loads dropped DLL
                      • System Location Discovery: System Language Discovery
                      • Modifies registry class
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious use of AdjustPrivilegeToken
                      • Suspicious use of WriteProcessMemory
                      PID:220

                  Network

                  MITRE ATT&CK Enterprise v15

                  Replay Monitor

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                  Downloads

                  • C:\Users\Admin\AppData\Local\Temp\7zS0C854E97\karotima_1.txt

                    Filesize

                    1014KB

                    MD5

                    953230955b0863d81f382d5163a4badc

                    SHA1

                    9c3fd08863f631a2e8aa921ff4d299105e085460

                    SHA256

                    a1d82cc7d4af1c8584f909c36b8b2cc8bd5d68791a5c9af0940e36a9887538f6

                    SHA512

                    fcc922272315876cfb71ce3b949c7838c45c3aa97860c75e55e82a2ac93ea65993cf5e0327c39cafd7a226d3fd2c72df77f9bb6c28a9dbb634c8650670b6d355

                  • C:\Users\Admin\AppData\Local\Temp\7zS0C854E97\karotima_2.txt

                    Filesize

                    712KB

                    MD5

                    8da953a71f7d9811e648b7644f39c445

                    SHA1

                    c39fd05d024249bc8d63493026474e797fd1eeaf

                    SHA256

                    ac6143d8ef00d3008388f0c4606bbcf9672eddde1cf76ad102ffb2db26fa6e71

                    SHA512

                    d75c871c781344968676a2c47e8c2387624d9f9aef7652b7eb97a2aebf9d474fcfe8a6f811b79a76fa4be980ccdfa8646b911e40827324800e233d390f1bcad3

                  • C:\Users\Admin\AppData\Local\Temp\7zS0C854E97\libcurl.dll

                    Filesize

                    218KB

                    MD5

                    d09be1f47fd6b827c81a4812b4f7296f

                    SHA1

                    028ae3596c0790e6d7f9f2f3c8e9591527d267f7

                    SHA256

                    0de53e7be51789adaec5294346220b20f793e7f8d153a3c110a92d658760697e

                    SHA512

                    857f44a1383c29208509b8f1164b6438d750d5bb4419add7626986333433e67a0d1211ec240ce9472f30a1f32b16c8097aceba4b2255641b3d8928f94237f595

                  • C:\Users\Admin\AppData\Local\Temp\7zS0C854E97\libcurlpp.dll

                    Filesize

                    54KB

                    MD5

                    e6e578373c2e416289a8da55f1dc5e8e

                    SHA1

                    b601a229b66ec3d19c2369b36216c6f6eb1c063e

                    SHA256

                    43e86d650a68f1f91fa2f4375aff2720e934aa78fa3d33e06363122bf5a9535f

                    SHA512

                    9df6a8c418113a77051f6cb02745ad48c521c13cdadb85e0e37f79e29041464c8c7d7ba8c558fdd877035eb8475b6f93e7fc62b38504ddfe696a61480cabac89

                  • C:\Users\Admin\AppData\Local\Temp\7zS0C854E97\libgcc_s_dw2-1.dll

                    Filesize

                    113KB

                    MD5

                    9aec524b616618b0d3d00b27b6f51da1

                    SHA1

                    64264300801a353db324d11738ffed876550e1d3

                    SHA256

                    59a466f77584438fc3abc0f43edc0fc99d41851726827a008841f05cfe12da7e

                    SHA512

                    0648a26940e8f4aad73b05ad53e43316dd688e5d55e293cce88267b2b8744412be2e0d507dadad830776bf715bcd819f00f5d1f7ac1c5f1c4f682fb7457a20d0

                  • C:\Users\Admin\AppData\Local\Temp\7zS0C854E97\libstdc++-6.dll

                    Filesize

                    647KB

                    MD5

                    5e279950775baae5fea04d2cc4526bcc

                    SHA1

                    8aef1e10031c3629512c43dd8b0b5d9060878453

                    SHA256

                    97de47068327bb822b33c7106f9cbb489480901a6749513ef5c31d229dcaca87

                    SHA512

                    666325e9ed71da4955058aea31b91e2e848be43211e511865f393b7f537c208c6b31c182f7d728c2704e9fc87e7d1be3f98f5fee4d34f11c56764e1c599afd02

                  • C:\Users\Admin\AppData\Local\Temp\7zS0C854E97\libwinpthread-1.dll

                    Filesize

                    69KB

                    MD5

                    1e0d62c34ff2e649ebc5c372065732ee

                    SHA1

                    fcfaa36ba456159b26140a43e80fbd7e9d9af2de

                    SHA256

                    509cb1d1443b623a02562ac760bced540e327c65157ffa938a22f75e38155723

                    SHA512

                    3653f8ed8ad3476632f731a3e76c6aae97898e4bf14f70007c93e53bc443906835be29f861c4a123db5b11e0f3dd5013b2b3833469a062060825df9ee708dc61

                  • C:\Users\Admin\AppData\Local\Temp\7zS0C854E97\setup_install.exe

                    Filesize

                    287KB

                    MD5

                    0fda084394902fd2739916ea85421549

                    SHA1

                    93d0a8fa172645a8f9c0ac381ca0fbe648871067

                    SHA256

                    fe34a9dd071d40c9a770f4c8a390afa6cfa8db86d7ed43c6e96606c5652b056e

                    SHA512

                    56f9cd74cf9dad5a78665b84b1813dbaebfc96a05bf82c195235a8af95e515b4ea308b3272f48697845925768e38ccd7b7797b1d2a8c18faacdd44422b1ba7f0

                  • C:\Users\Admin\AppData\Local\Temp\axhub.dat

                    Filesize

                    552KB

                    MD5

                    c5c411ddf0d0dd87bc6fdb84975fc292

                    SHA1

                    e04d41c06a12d46c5ba8220509d89d2a66140892

                    SHA256

                    dc16f2dadacfad74d074a70c060bafc95d49a7d08a1cbe24f35ddb1769fb56da

                    SHA512

                    9ed2af8bef3a1873efefb048c3e2733e994bf6300bdfb06ea12939450e65abfa19b4753a1e0755a755a8aed10398982c737d33b9fa79f91ffa356ef4ce20109b

                  • C:\Users\Admin\AppData\Local\Temp\axhub.dll

                    Filesize

                    73KB

                    MD5

                    1c7be730bdc4833afb7117d48c3fd513

                    SHA1

                    dc7e38cfe2ae4a117922306aead5a7544af646b8

                    SHA256

                    8206b4b3897ca45b9e083273f616902966e57091516844906e6ae2aefe63cef1

                    SHA512

                    7936c862a06b7ecdb6710a1bb62cbea149f75504b580c2f100945674c987f3eec53e9aa5915e32b4f74bcf46f2df9468f68a454400faebd909f933e8072e0f2e

                  • C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Maintenance Work

                    Filesize

                    2KB

                    MD5

                    8abf2d6067c6f3191a015f84aa9b6efe

                    SHA1

                    98f2b0a5cdb13cd3d82dc17bd43741bf0b3496f7

                    SHA256

                    ee18bd3259f220c41062abcbe71a421da3e910df11b9f86308a16cdc3a66fbea

                    SHA512

                    c2d686a6373efcff583c1ef50c144c59addb8b9c4857ccd8565cd8be3c94b0ac0273945167eb04ebd40dfb0351e4b66cffe4c4e478fb7733714630a11f765b63

                  • C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Maintenance Work

                    Filesize

                    2KB

                    MD5

                    f313c5b4f95605026428425586317353

                    SHA1

                    06be66fa06e1cffc54459c38d3d258f46669d01a

                    SHA256

                    129d0b993cd3858af5b7e87fdf74d8e59e6f2110184b5c905df8f5f6f2c39d8b

                    SHA512

                    b87a829c86eff1d10e1590b18a9909f05101a535e5f4cef914a4192956eb35a8bfef614c9f95d53783d77571687f3eb3c4e8ee2f24d23ad24e0976d8266b8890

                  • C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Wake To Work

                    Filesize

                    2KB

                    MD5

                    ceb7caa4e9c4b8d760dbf7e9e5ca44c5

                    SHA1

                    a3879621f9493414d497ea6d70fbf17e283d5c08

                    SHA256

                    98c054088df4957e8d6361fd2539c219bcf35f8a524aad8f5d1a95f218e990e9

                    SHA512

                    1eddfbf4cb62d3c5b4755a371316304aaeabb00f01bad03fb4f925a98a2f0824f613537d86deddd648a74d694dc13ed5183e761fdc1ec92589f6fa28beb7fbff

                  • C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Wake To Work

                    Filesize

                    2KB

                    MD5

                    7d612892b20e70250dbd00d0cdd4f09b

                    SHA1

                    63251cfa4e5d6cbf6fb14f6d8a7407dbe763d3f5

                    SHA256

                    727c9e7b91e144e453d5b32e18f12508ee84dabe71bc852941d9c9b4923f9e02

                    SHA512

                    f8d481f3300947d49ce5ab988a9d4e3154746afccc97081cbed1135ffb24fc107203d485dda2d5d714e74e752c614d8cfd16781ea93450fe782ffae3f77066d1

                  • C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Work

                    Filesize

                    2KB

                    MD5

                    1e8e2076314d54dd72e7ee09ff8a52ab

                    SHA1

                    5fd0a67671430f66237f483eef39ff599b892272

                    SHA256

                    55f203d6b40a39a6beba9dd3a2cb9034284f49578009835dd4f0f8e1db6ebe2f

                    SHA512

                    5b0c97284923c4619d9c00cba20ce1c6d65d1826abe664c390b04283f7a663256b4a6efe51f794cb5ec82ccea80307729addde841469da8d041cbcfd94feb0f6

                  • C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Work

                    Filesize

                    2KB

                    MD5

                    0b990e24f1e839462c0ac35fef1d119e

                    SHA1

                    9e17905f8f68f9ce0a2024d57b537aa8b39c6708

                    SHA256

                    a1106ed0845cd438e074344e0fe296dc10ee121a0179e09398eaaea2357c614a

                    SHA512

                    c65ba42fc0a2cb0b70888beb8ca334f7d5a8eaf954a5ef7adaecbcb4ce8d61b34858dfd9560954f95f59b4d8110a79ceaa39088b6a0caf8b42ceda41b46ec4a4

                  • memory/760-69-0x000001C622340000-0x000001C6223B1000-memory.dmp

                    Filesize

                    452KB

                  • memory/760-71-0x000001C621CE0000-0x000001C621D2C000-memory.dmp

                    Filesize

                    304KB

                  • memory/760-68-0x000001C621CE0000-0x000001C621D2C000-memory.dmp

                    Filesize

                    304KB

                  • memory/1160-99-0x0000022146740000-0x00000221467B1000-memory.dmp

                    Filesize

                    452KB

                  • memory/1224-84-0x000002A3CFA80000-0x000002A3CFAF1000-memory.dmp

                    Filesize

                    452KB

                  • memory/1408-119-0x0000017971A00000-0x0000017971A71000-memory.dmp

                    Filesize

                    452KB

                  • memory/1572-111-0x000001D023920000-0x000001D023991000-memory.dmp

                    Filesize

                    452KB

                  • memory/1696-103-0x0000017530C00000-0x0000017530C71000-memory.dmp

                    Filesize

                    452KB

                  • memory/1740-107-0x0000015C52540000-0x0000015C525B1000-memory.dmp

                    Filesize

                    452KB

                  • memory/2552-73-0x000001EAC8540000-0x000001EAC85B1000-memory.dmp

                    Filesize

                    452KB

                  • memory/2812-80-0x0000028F70720000-0x0000028F70791000-memory.dmp

                    Filesize

                    452KB

                  • memory/2844-77-0x000001F757800000-0x000001F757871000-memory.dmp

                    Filesize

                    452KB

                  • memory/2848-115-0x00000144B9950000-0x00000144B99C1000-memory.dmp

                    Filesize

                    452KB

                  • memory/3640-50-0x0000000000400000-0x000000000051E000-memory.dmp

                    Filesize

                    1.1MB

                  • memory/3640-53-0x0000000000400000-0x000000000051E000-memory.dmp

                    Filesize

                    1.1MB

                  • memory/3640-51-0x0000000000400000-0x000000000051E000-memory.dmp

                    Filesize

                    1.1MB

                  • memory/3640-54-0x0000000000400000-0x000000000051E000-memory.dmp

                    Filesize

                    1.1MB

                  • memory/3640-55-0x0000000000400000-0x000000000051E000-memory.dmp

                    Filesize

                    1.1MB

                  • memory/3640-52-0x0000000000400000-0x000000000051E000-memory.dmp

                    Filesize

                    1.1MB

                  • memory/3640-32-0x000000006B280000-0x000000006B2A6000-memory.dmp

                    Filesize

                    152KB

                  • memory/3640-35-0x00000000007B0000-0x000000000083F000-memory.dmp

                    Filesize

                    572KB

                  • memory/3640-36-0x000000006FE40000-0x000000006FFC6000-memory.dmp

                    Filesize

                    1.5MB

                  • memory/3640-39-0x0000000064941000-0x000000006494F000-memory.dmp

                    Filesize

                    56KB

                  • memory/3640-91-0x000000006EB40000-0x000000006EB63000-memory.dmp

                    Filesize

                    140KB

                  • memory/3640-98-0x0000000064940000-0x0000000064959000-memory.dmp

                    Filesize

                    100KB

                  • memory/3640-97-0x000000006B440000-0x000000006B4CF000-memory.dmp

                    Filesize

                    572KB

                  • memory/3640-96-0x000000006FE40000-0x000000006FFC6000-memory.dmp

                    Filesize

                    1.5MB

                  • memory/3640-95-0x000000006B280000-0x000000006B2A6000-memory.dmp

                    Filesize

                    152KB

                  • memory/3640-94-0x0000000000400000-0x000000000051E000-memory.dmp

                    Filesize

                    1.1MB

                  • memory/3640-40-0x000000006B440000-0x000000006B4CF000-memory.dmp

                    Filesize

                    572KB

                  • memory/3640-41-0x000000006B440000-0x000000006B4CF000-memory.dmp

                    Filesize

                    572KB

                  • memory/3640-43-0x000000006FE40000-0x000000006FFC6000-memory.dmp

                    Filesize

                    1.5MB

                  • memory/3640-44-0x000000006FE40000-0x000000006FFC6000-memory.dmp

                    Filesize

                    1.5MB

                  • memory/3640-46-0x000000006FE40000-0x000000006FFC6000-memory.dmp

                    Filesize

                    1.5MB

                  • memory/3640-47-0x000000006FE40000-0x000000006FFC6000-memory.dmp

                    Filesize

                    1.5MB

                  • memory/3640-49-0x000000006B280000-0x000000006B2A6000-memory.dmp

                    Filesize

                    152KB

                  • memory/3640-48-0x000000006B280000-0x000000006B2A6000-memory.dmp

                    Filesize

                    152KB

                  • memory/3640-45-0x0000000064940000-0x0000000064959000-memory.dmp

                    Filesize

                    100KB

                  • memory/3640-42-0x000000006B440000-0x000000006B4CF000-memory.dmp

                    Filesize

                    572KB

                  • memory/3640-38-0x000000006B440000-0x000000006B4CF000-memory.dmp

                    Filesize

                    572KB

                  • memory/3640-22-0x0000000000400000-0x000000000051E000-memory.dmp

                    Filesize

                    1.1MB