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Analysis

  • max time kernel
    144s
  • max time network
    131s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    28/02/2024, 23:18

General

  • Target

    ad1ca7ff685a17765d86adb4105b7bd7.exe

  • Size

    5.7MB

  • MD5

    ad1ca7ff685a17765d86adb4105b7bd7

  • SHA1

    96291cf1ce155f393919965359de528b2d661186

  • SHA256

    3b15547e53d7254ec42974dc5a1d7b72cffd722a41114944b5606a845be7b76d

  • SHA512

    6645b29c759d1fb015c1999d12f119d3f379fbabd9d643ea8da0851cf7ab680f0fa5de7dab075df0165bf16e55a2f01405794d57c5911fa68c5e068ce200d5ee

  • SSDEEP

    98304:x7CvLUBsgSqm9iwNZOmcJ9sTqEQxvTNDagiE6ixeZKjG/RrkIk8lfYhlB:xALUCghwNZvWDOTBKjgd/lf2H

Malware Config

Extracted

Family

nullmixer

C2

http://marisana.xyz/

Signatures

  • NullMixer

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

  • ASPack v2.12-2.42 3 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 11 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ad1ca7ff685a17765d86adb4105b7bd7.exe
    "C:\Users\Admin\AppData\Local\Temp\ad1ca7ff685a17765d86adb4105b7bd7.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2232
    • C:\Users\Admin\AppData\Local\Temp\7zS8B8BF0B6\setup_install.exe
      "C:\Users\Admin\AppData\Local\Temp\7zS8B8BF0B6\setup_install.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:2512

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\7zS8B8BF0B6\libcurlpp.dll

    Filesize

    54KB

    MD5

    e6e578373c2e416289a8da55f1dc5e8e

    SHA1

    b601a229b66ec3d19c2369b36216c6f6eb1c063e

    SHA256

    43e86d650a68f1f91fa2f4375aff2720e934aa78fa3d33e06363122bf5a9535f

    SHA512

    9df6a8c418113a77051f6cb02745ad48c521c13cdadb85e0e37f79e29041464c8c7d7ba8c558fdd877035eb8475b6f93e7fc62b38504ddfe696a61480cabac89

  • C:\Users\Admin\AppData\Local\Temp\7zS8B8BF0B6\libstdc++-6.dll

    Filesize

    647KB

    MD5

    5e279950775baae5fea04d2cc4526bcc

    SHA1

    8aef1e10031c3629512c43dd8b0b5d9060878453

    SHA256

    97de47068327bb822b33c7106f9cbb489480901a6749513ef5c31d229dcaca87

    SHA512

    666325e9ed71da4955058aea31b91e2e848be43211e511865f393b7f537c208c6b31c182f7d728c2704e9fc87e7d1be3f98f5fee4d34f11c56764e1c599afd02

  • C:\Users\Admin\AppData\Local\Temp\7zS8B8BF0B6\libwinpthread-1.dll

    Filesize

    69KB

    MD5

    1e0d62c34ff2e649ebc5c372065732ee

    SHA1

    fcfaa36ba456159b26140a43e80fbd7e9d9af2de

    SHA256

    509cb1d1443b623a02562ac760bced540e327c65157ffa938a22f75e38155723

    SHA512

    3653f8ed8ad3476632f731a3e76c6aae97898e4bf14f70007c93e53bc443906835be29f861c4a123db5b11e0f3dd5013b2b3833469a062060825df9ee708dc61

  • C:\Users\Admin\AppData\Local\Temp\7zS8B8BF0B6\setup_install.exe

    Filesize

    2.1MB

    MD5

    6855292af7971bb50c0957fe13b68915

    SHA1

    24527b127a43f9486279f7c384f202fbd60cfbd9

    SHA256

    9e7032a840e8776802cf7c5c1af58810afdb5ab53bdc9e91142248620087e0cc

    SHA512

    d92c0da0b4438c257c61eb372d7362b450d68ed46545e18f8f18def12a477401fe6be58448ab818048f18317d629c8931f740cbccfbb69aa4d945f918569a447

  • C:\Users\Admin\AppData\Local\Temp\7zS8B8BF0B6\setup_install.exe

    Filesize

    1.2MB

    MD5

    8b80e231fc1c3ba75ab1808ece1c0b2f

    SHA1

    7f5d030128d401e32b41935595bc82a2200c1c8b

    SHA256

    cda61524e6bbe4b96c840dc2dd8eee78970120b38813fd05910c0a20fd623f85

    SHA512

    6f543b6dc78a756e49508e1dbab8c797f90baa296dbad343a594db919e75327e120159e540caf8986a7be526960300d554d83c11389f20cbcbc5a24948fb9fbf

  • \Users\Admin\AppData\Local\Temp\7zS8B8BF0B6\libcurl.dll

    Filesize

    218KB

    MD5

    d09be1f47fd6b827c81a4812b4f7296f

    SHA1

    028ae3596c0790e6d7f9f2f3c8e9591527d267f7

    SHA256

    0de53e7be51789adaec5294346220b20f793e7f8d153a3c110a92d658760697e

    SHA512

    857f44a1383c29208509b8f1164b6438d750d5bb4419add7626986333433e67a0d1211ec240ce9472f30a1f32b16c8097aceba4b2255641b3d8928f94237f595

  • \Users\Admin\AppData\Local\Temp\7zS8B8BF0B6\libgcc_s_dw2-1.dll

    Filesize

    113KB

    MD5

    9aec524b616618b0d3d00b27b6f51da1

    SHA1

    64264300801a353db324d11738ffed876550e1d3

    SHA256

    59a466f77584438fc3abc0f43edc0fc99d41851726827a008841f05cfe12da7e

    SHA512

    0648a26940e8f4aad73b05ad53e43316dd688e5d55e293cce88267b2b8744412be2e0d507dadad830776bf715bcd819f00f5d1f7ac1c5f1c4f682fb7457a20d0

  • \Users\Admin\AppData\Local\Temp\7zS8B8BF0B6\setup_install.exe

    Filesize

    1.1MB

    MD5

    4f9e94253240a2bc52df222fb75f1856

    SHA1

    9e82687a1bb94b47f79e670405cc9d7c85763632

    SHA256

    d4c6d3d0a25ce1d96df3f25944b3cf3054b7f8f860e1ec6986f294af789e9dbb

    SHA512

    e06f6b65b483b035ddbbe21e03cc1cddd10bd809f2ad2c835d7c9634d2ec83799c5f4313c118afcf0531311c18b0fde9a5ee60703c3d9a22db3dd892aa78c5df

  • memory/2512-49-0x000000006B440000-0x000000006B4CF000-memory.dmp

    Filesize

    572KB

  • memory/2512-44-0x000000006B280000-0x000000006B2A6000-memory.dmp

    Filesize

    152KB

  • memory/2512-58-0x0000000064940000-0x0000000064959000-memory.dmp

    Filesize

    100KB

  • memory/2512-57-0x000000006B440000-0x000000006B4CF000-memory.dmp

    Filesize

    572KB

  • memory/2512-56-0x000000006FE40000-0x000000006FFC6000-memory.dmp

    Filesize

    1.5MB

  • memory/2512-55-0x000000006B440000-0x000000006B4CF000-memory.dmp

    Filesize

    572KB

  • memory/2512-59-0x0000000000400000-0x000000000051B000-memory.dmp

    Filesize

    1.1MB

  • memory/2512-61-0x000000006B280000-0x000000006B2A6000-memory.dmp

    Filesize

    152KB

  • memory/2512-63-0x000000006EB40000-0x000000006EB63000-memory.dmp

    Filesize

    140KB