Overview

overview

10

Static

static

3

sample.exe

windows7-x64

10

sample.exe

windows10-2004-x64

10

setup_installer.exe

windows7-x64

10

setup_installer.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    145s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    09-11-2024 07:00

Sharing

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General

  • Target

    setup_installer.exe

  • Size

    1.9MB

  • MD5

    b2f70eb858dfaec80293b9b64e3f27e4

  • SHA1

    eef1eddd4cd6f35a9af2f7b8da646bc30d7a1e5a

  • SHA256

    b1914ff05df9f8bb2945b6a426ab944b9847686b50f7137f3e04d045966c05ff

  • SHA512

    367068e5b12ac20014cff3defc4c62b5fad4064e133da621a68ea9d31f2baeb3c8f2c5ab0c3cd6cd6a163b09a4e8142ac28db2fdbbd8a29c5aa1dc8fbcbfd324

  • SSDEEP

    49152:xcBxvy10E+QMWcLctpCOOeWAbaW44EwJ84vLRaBtIl9mTI+MAYs:xU4MWcApaeW9FvCvLUBsKITds

Score
10/10
nullmixeraspackv2discoverydropperevasiontrojan

Malware Config

Extracted

Family

nullmixer

C2

http://wxkeww.xyz/

Signatures

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

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

    droppernullmixer
  • Nullmixer family
    nullmixer
  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • ASPack v2.12-2.42 4 IoCs

    Detects executables packed with ASPack v2.12-2.42

    aspackv2
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 29 IoCs
  • Looks up external IP address via web service 4 IoCs

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

  • 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.

    discovery
  • Modifies registry class 8 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 61 IoCs

Processes

  • C:\Windows\system32\services.exe
    C:\Windows\system32\services.exe
    1⤵
      PID:476
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k netsvcs
        2⤵
        • Suspicious use of NtCreateUserProcessOtherParentProcess
        • Suspicious use of SetThreadContext
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:844
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k SystemNetworkService
        2⤵
        • Modifies registry class
        PID:2280
    • C:\Users\Admin\AppData\Local\Temp\setup_installer.exe
      "C:\Users\Admin\AppData\Local\Temp\setup_installer.exe"
      1⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1728
      • C:\Users\Admin\AppData\Local\Temp\7zS0C6D40C6\setup_install.exe
        "C:\Users\Admin\AppData\Local\Temp\7zS0C6D40C6\setup_install.exe"
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:580
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c karotima_1.exe
          3⤵
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2844
          • C:\Users\Admin\AppData\Local\Temp\7zS0C6D40C6\karotima_1.exe
            karotima_1.exe
            4⤵
            • Modifies Windows Defender Real-time Protection settings
            • Executes dropped EXE
            • Loads dropped DLL
            • System Location Discovery: System Language Discovery
            PID:2748
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c karotima_2.exe
          3⤵
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2656
          • C:\Users\Admin\AppData\Local\Temp\7zS0C6D40C6\karotima_2.exe
            karotima_2.exe
            4⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:2636
            • C:\Users\Admin\AppData\Local\Temp\7zS0C6D40C6\karotima_2.exe
              "C:\Users\Admin\AppData\Local\Temp\7zS0C6D40C6\karotima_2.exe" -a
              5⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • System Location Discovery: System Language Discovery
              PID:2804
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 580 -s 368
          3⤵
          • Loads dropped DLL
          • Program crash
          PID:1032
    • C:\Windows\system32\rUNdlL32.eXe
      rUNdlL32.eXe "C:\Users\Admin\AppData\Local\Temp\axhub.dll",main
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:1800
      • 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:1688

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\7zS0C6D40C6\karotima_1.txt
      Filesize

      1014KB

      MD5

      953230955b0863d81f382d5163a4badc

      SHA1

      9c3fd08863f631a2e8aa921ff4d299105e085460

      SHA256

      a1d82cc7d4af1c8584f909c36b8b2cc8bd5d68791a5c9af0940e36a9887538f6

      SHA512

      fcc922272315876cfb71ce3b949c7838c45c3aa97860c75e55e82a2ac93ea65993cf5e0327c39cafd7a226d3fd2c72df77f9bb6c28a9dbb634c8650670b6d355

      Download Submit

    • C:\Users\Admin\AppData\Local\Temp\7zS0C6D40C6\karotima_2.txt
      Filesize

      712KB

      MD5

      8da953a71f7d9811e648b7644f39c445

      SHA1

      c39fd05d024249bc8d63493026474e797fd1eeaf

      SHA256

      ac6143d8ef00d3008388f0c4606bbcf9672eddde1cf76ad102ffb2db26fa6e71

      SHA512

      d75c871c781344968676a2c47e8c2387624d9f9aef7652b7eb97a2aebf9d474fcfe8a6f811b79a76fa4be980ccdfa8646b911e40827324800e233d390f1bcad3

      Download Submit

    • C:\Users\Admin\AppData\Local\Temp\7zS0C6D40C6\libcurl.dll
      Filesize

      218KB

      MD5

      d09be1f47fd6b827c81a4812b4f7296f

      SHA1

      028ae3596c0790e6d7f9f2f3c8e9591527d267f7

      SHA256

      0de53e7be51789adaec5294346220b20f793e7f8d153a3c110a92d658760697e

      SHA512

      857f44a1383c29208509b8f1164b6438d750d5bb4419add7626986333433e67a0d1211ec240ce9472f30a1f32b16c8097aceba4b2255641b3d8928f94237f595

      Download Submit

    • C:\Users\Admin\AppData\Local\Temp\7zS0C6D40C6\setup_install.exe
      Filesize

      287KB

      MD5

      0fda084394902fd2739916ea85421549

      SHA1

      93d0a8fa172645a8f9c0ac381ca0fbe648871067

      SHA256

      fe34a9dd071d40c9a770f4c8a390afa6cfa8db86d7ed43c6e96606c5652b056e

      SHA512

      56f9cd74cf9dad5a78665b84b1813dbaebfc96a05bf82c195235a8af95e515b4ea308b3272f48697845925768e38ccd7b7797b1d2a8c18faacdd44422b1ba7f0

      Download Submit

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

      552KB

      MD5

      c5c411ddf0d0dd87bc6fdb84975fc292

      SHA1

      e04d41c06a12d46c5ba8220509d89d2a66140892

      SHA256

      dc16f2dadacfad74d074a70c060bafc95d49a7d08a1cbe24f35ddb1769fb56da

      SHA512

      9ed2af8bef3a1873efefb048c3e2733e994bf6300bdfb06ea12939450e65abfa19b4753a1e0755a755a8aed10398982c737d33b9fa79f91ffa356ef4ce20109b

      Download Submit

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

      73KB

      MD5

      1c7be730bdc4833afb7117d48c3fd513

      SHA1

      dc7e38cfe2ae4a117922306aead5a7544af646b8

      SHA256

      8206b4b3897ca45b9e083273f616902966e57091516844906e6ae2aefe63cef1

      SHA512

      7936c862a06b7ecdb6710a1bb62cbea149f75504b580c2f100945674c987f3eec53e9aa5915e32b4f74bcf46f2df9468f68a454400faebd909f933e8072e0f2e

      Download Submit

    • \Users\Admin\AppData\Local\Temp\7zS0C6D40C6\libcurlpp.dll
      Filesize

      54KB

      MD5

      e6e578373c2e416289a8da55f1dc5e8e

      SHA1

      b601a229b66ec3d19c2369b36216c6f6eb1c063e

      SHA256

      43e86d650a68f1f91fa2f4375aff2720e934aa78fa3d33e06363122bf5a9535f

      SHA512

      9df6a8c418113a77051f6cb02745ad48c521c13cdadb85e0e37f79e29041464c8c7d7ba8c558fdd877035eb8475b6f93e7fc62b38504ddfe696a61480cabac89

      Download Submit

    • \Users\Admin\AppData\Local\Temp\7zS0C6D40C6\libgcc_s_dw2-1.dll
      Filesize

      113KB

      MD5

      9aec524b616618b0d3d00b27b6f51da1

      SHA1

      64264300801a353db324d11738ffed876550e1d3

      SHA256

      59a466f77584438fc3abc0f43edc0fc99d41851726827a008841f05cfe12da7e

      SHA512

      0648a26940e8f4aad73b05ad53e43316dd688e5d55e293cce88267b2b8744412be2e0d507dadad830776bf715bcd819f00f5d1f7ac1c5f1c4f682fb7457a20d0

      Download Submit

    • \Users\Admin\AppData\Local\Temp\7zS0C6D40C6\libstdc++-6.dll
      Filesize

      647KB

      MD5

      5e279950775baae5fea04d2cc4526bcc

      SHA1

      8aef1e10031c3629512c43dd8b0b5d9060878453

      SHA256

      97de47068327bb822b33c7106f9cbb489480901a6749513ef5c31d229dcaca87

      SHA512

      666325e9ed71da4955058aea31b91e2e848be43211e511865f393b7f537c208c6b31c182f7d728c2704e9fc87e7d1be3f98f5fee4d34f11c56764e1c599afd02

      Download Submit

    • \Users\Admin\AppData\Local\Temp\7zS0C6D40C6\libwinpthread-1.dll
      Filesize

      69KB

      MD5

      1e0d62c34ff2e649ebc5c372065732ee

      SHA1

      fcfaa36ba456159b26140a43e80fbd7e9d9af2de

      SHA256

      509cb1d1443b623a02562ac760bced540e327c65157ffa938a22f75e38155723

      SHA512

      3653f8ed8ad3476632f731a3e76c6aae97898e4bf14f70007c93e53bc443906835be29f861c4a123db5b11e0f3dd5013b2b3833469a062060825df9ee708dc61

      Download Submit

    • memory/580-57-0x0000000000400000-0x000000000051E000-memory.dmp

      Filesize

      1.1MB

      Download

    • memory/580-48-0x000000006B440000-0x000000006B4CF000-memory.dmp

      Filesize

      572KB

      Download

    • memory/580-51-0x000000006FE40000-0x000000006FFC6000-memory.dmp

      Filesize

      1.5MB

      Download

    • memory/580-68-0x0000000000520000-0x000000000063E000-memory.dmp

      Filesize

      1.1MB

      Download

    • memory/580-38-0x000000006B440000-0x000000006B4CF000-memory.dmp

      Filesize

      572KB

      Download

    • memory/580-35-0x000000006B280000-0x000000006B2A6000-memory.dmp

      Filesize

      152KB

      Download

    • memory/580-65-0x0000000064940000-0x0000000064959000-memory.dmp

      Filesize

      100KB

      Download

    • memory/580-64-0x0000000064941000-0x000000006494F000-memory.dmp

      Filesize

      56KB

      Download

    • memory/580-63-0x0000000000520000-0x000000000063E000-memory.dmp

      Filesize

      1.1MB

      Download

    • memory/580-62-0x0000000000520000-0x000000000063E000-memory.dmp

      Filesize

      1.1MB

      Download

    • memory/580-61-0x000000006FE40000-0x000000006FFC6000-memory.dmp

      Filesize

      1.5MB

      Download

    • memory/580-60-0x0000000000400000-0x000000000051E000-memory.dmp

      Filesize

      1.1MB

      Download

    • memory/580-59-0x0000000000400000-0x000000000051E000-memory.dmp

      Filesize

      1.1MB

      Download

    • memory/580-58-0x0000000000400000-0x000000000051E000-memory.dmp

      Filesize

      1.1MB

      Download

    • memory/580-107-0x0000000064940000-0x0000000064959000-memory.dmp

      Filesize

      100KB

      Download

    • memory/580-55-0x0000000000400000-0x000000000051E000-memory.dmp

      Filesize

      1.1MB

      Download

    • memory/580-54-0x000000006B280000-0x000000006B2A6000-memory.dmp

      Filesize

      152KB

      Download

    • memory/580-29-0x0000000000400000-0x000000000051E000-memory.dmp

      Filesize

      1.1MB

      Download

    • memory/580-110-0x000000006EB40000-0x000000006EB63000-memory.dmp

      Filesize

      140KB

      Download

    • memory/580-112-0x0000000000400000-0x000000000051E000-memory.dmp

      Filesize

      1.1MB

      Download

    • memory/580-113-0x000000006B280000-0x000000006B2A6000-memory.dmp

      Filesize

      152KB

      Download

    • memory/580-115-0x000000006FE40000-0x000000006FFC6000-memory.dmp

      Filesize

      1.5MB

      Download

    • memory/580-114-0x000000006B440000-0x000000006B4CF000-memory.dmp

      Filesize

      572KB

      Download

    • memory/580-46-0x000000006B440000-0x000000006B4CF000-memory.dmp

      Filesize

      572KB

      Download

    • memory/580-53-0x000000006B280000-0x000000006B2A6000-memory.dmp

      Filesize

      152KB

      Download

    • memory/580-52-0x000000006FE40000-0x000000006FFC6000-memory.dmp

      Filesize

      1.5MB

      Download

    • memory/580-50-0x000000006FE40000-0x000000006FFC6000-memory.dmp

      Filesize

      1.5MB

      Download

    • memory/580-49-0x000000006FE40000-0x000000006FFC6000-memory.dmp

      Filesize

      1.5MB

      Download

    • memory/580-56-0x0000000000400000-0x000000000051E000-memory.dmp

      Filesize

      1.1MB

      Download

    • memory/580-47-0x000000006B440000-0x000000006B4CF000-memory.dmp

      Filesize

      572KB

      Download

    • memory/844-101-0x0000000002730000-0x00000000027A1000-memory.dmp

      Filesize

      452KB

      Download

    • memory/844-92-0x0000000000E00000-0x0000000000E4C000-memory.dmp

      Filesize

      304KB

      Download

    • memory/844-93-0x0000000002730000-0x00000000027A1000-memory.dmp

      Filesize

      452KB

      Download

    • memory/844-95-0x0000000000E00000-0x0000000000E4C000-memory.dmp

      Filesize

      304KB

      Download

    • memory/1728-27-0x0000000002F70000-0x000000000308E000-memory.dmp

      Filesize

      1.1MB

      Download

    • memory/1728-21-0x0000000002F70000-0x000000000308E000-memory.dmp

      Filesize

      1.1MB

      Download

    • memory/2280-96-0x0000000000060000-0x00000000000AC000-memory.dmp

      Filesize

      304KB

      Download

    • memory/2280-98-0x0000000000490000-0x0000000000501000-memory.dmp

      Filesize

      452KB

      Download