Analysis

  • max time kernel
    147s
  • max time network
    131s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/08/2024, 00:05

General

  • Target

    45bc5a4aff406b019c4b132bd82a8c8e0cb2419c852eb886798824e33782d427.exe

  • Size

    4.5MB

  • MD5

    22119fde83b2188167f2dc89cb6a4401

  • SHA1

    3ba3603c55c1c04f233ea2486b0843118c6b587a

  • SHA256

    45bc5a4aff406b019c4b132bd82a8c8e0cb2419c852eb886798824e33782d427

  • SHA512

    e7932a2e3c99bccca18fd9626d718ceb36e56ee6f755b07a3dce1c416e5fac2dc0cb30977ff1a162ee2f8b70f2d7a95d92f465a7739deef92dfe80049f12fcb1

  • SSDEEP

    98304:N9kqcu1XXGYuCVDnbKXSd7Q77l2aOkF1uLM2MCHIXQHrNupZFMt0K1ziRodJ:R1XDnKcE7VOkmLMQoArNupLaR1ziRoD

Malware Config

Signatures

  • Detect Socks5Systemz Payload 3 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 3 IoCs
  • Unexpected DNS network traffic destination 1 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\45bc5a4aff406b019c4b132bd82a8c8e0cb2419c852eb886798824e33782d427.exe
    "C:\Users\Admin\AppData\Local\Temp\45bc5a4aff406b019c4b132bd82a8c8e0cb2419c852eb886798824e33782d427.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3368
    • C:\Users\Admin\AppData\Local\Temp\is-03TGF.tmp\45bc5a4aff406b019c4b132bd82a8c8e0cb2419c852eb886798824e33782d427.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-03TGF.tmp\45bc5a4aff406b019c4b132bd82a8c8e0cb2419c852eb886798824e33782d427.tmp" /SL5="$80062,4423076,54272,C:\Users\Admin\AppData\Local\Temp\45bc5a4aff406b019c4b132bd82a8c8e0cb2419c852eb886798824e33782d427.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:3704
      • C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe
        "C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe" -i
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:2288
      • C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe
        "C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe" -s
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:748

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe

          Filesize

          4.1MB

          MD5

          6e8656d67ad031773a268d55a907c76e

          SHA1

          1aed2ceccb9e92ab8bdcb21e501d2b6b94ffdfc6

          SHA256

          699d3bb069933297285c810089904402580d1aeeef879c2042a79e544f10951e

          SHA512

          8ba6df3138847874d8653b7bf0768e43c409dc45fb413cfd922506b4a52d8f438879ae13bbb961216e943d56ee7dfd7cdd11be454893040489179890b8238831

        • C:\Users\Admin\AppData\Local\Temp\is-03TGF.tmp\45bc5a4aff406b019c4b132bd82a8c8e0cb2419c852eb886798824e33782d427.tmp

          Filesize

          692KB

          MD5

          85fc5b8836d8625fbfa40a092386e645

          SHA1

          a90bb83f5d8d024bb357a44682267a50406071d6

          SHA256

          6dda4c9c34d1898b592ebeccee9f4b2a2bffefd68296da6310435e13fb63d950

          SHA512

          c50e53c2c695c7ba24b4cc2c2f958e1e9ce4eea9b541684ea41c7cae513919bb80171dcaaf1c18a8f37221737e6a1f8ba0881a224abd3dd09407d0c4edb96aae

        • C:\Users\Admin\AppData\Local\Temp\is-A75R2.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • C:\Users\Admin\AppData\Local\Temp\is-A75R2.tmp\_isetup\_isdecmp.dll

          Filesize

          13KB

          MD5

          a813d18268affd4763dde940246dc7e5

          SHA1

          c7366e1fd925c17cc6068001bd38eaef5b42852f

          SHA256

          e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64

          SHA512

          b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4

        • memory/748-91-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/748-78-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/748-115-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/748-112-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/748-108-0x0000000000B90000-0x0000000000C32000-memory.dmp

          Filesize

          648KB

        • memory/748-107-0x0000000000B90000-0x0000000000C32000-memory.dmp

          Filesize

          648KB

        • memory/748-106-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/748-66-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/748-103-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/748-100-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/748-69-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/748-72-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/748-75-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/748-97-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/748-81-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/748-84-0x0000000000B90000-0x0000000000C32000-memory.dmp

          Filesize

          648KB

        • memory/748-88-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/748-94-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/2288-63-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/2288-59-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/2288-60-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/2288-58-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/3368-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/3368-67-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/3368-2-0x0000000000401000-0x000000000040B000-memory.dmp

          Filesize

          40KB

        • memory/3704-12-0x0000000000400000-0x00000000004BD000-memory.dmp

          Filesize

          756KB

        • memory/3704-68-0x0000000000400000-0x00000000004BD000-memory.dmp

          Filesize

          756KB