Analysis

  • max time kernel
    143s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/08/2024, 20:25

General

  • Target

    8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.exe

  • Size

    4.6MB

  • MD5

    e2a42238665237a610fc01bf93a036c0

  • SHA1

    185ad7b607cb681886e892da0514c871780663fa

  • SHA256

    8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b

  • SHA512

    9224638f0794358a802c1ea360457636cadbf7c7fd5226d920ca9c26f47bf50a2689c608b33d065a63b7c6f93fd006ae782b4214dbd95d77c133994f94e3d3de

  • SSDEEP

    98304:NIBDxKfjcEtBdgSqMBYGx4FqWzWQw9y8rCKimem/Su+q/aQGTkIDdJ:OxsjZTqs78TSQkQKivmqfq/FGTkIDD

Malware Config

Signatures

  • Detect Socks5Systemz Payload 1 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\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.exe
    "C:\Users\Admin\AppData\Local\Temp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4936
    • C:\Users\Admin\AppData\Local\Temp\is-9BN1J.tmp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-9BN1J.tmp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp" /SL5="$B01FE,4588230,54272,C:\Users\Admin\AppData\Local\Temp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.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:4576
      • 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:4640
      • 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:2724

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          4.3MB

          MD5

          2ff96fc8212a5ea6781036c03d92bf66

          SHA1

          cfd302f29766e9801b7e858d4257defc26e70de3

          SHA256

          684ee3dbb9a2997433acaa9d878e5e48ad585f0ac0d19fbcb5ff05caf47e0087

          SHA512

          26f4c894ef2dee24ccac4a535e05272ecec6a94249582514a5b19d69327b687305b224c092e4d9667e92f8979e213873b51e789413cf87935d84ed1eff3e6ab0

        • C:\Users\Admin\AppData\Local\Temp\is-48N8B.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • C:\Users\Admin\AppData\Local\Temp\is-48N8B.tmp\_isetup\_isdecmp.dll

          Filesize

          13KB

          MD5

          a813d18268affd4763dde940246dc7e5

          SHA1

          c7366e1fd925c17cc6068001bd38eaef5b42852f

          SHA256

          e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64

          SHA512

          b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4

        • C:\Users\Admin\AppData\Local\Temp\is-9BN1J.tmp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp

          Filesize

          692KB

          MD5

          85fc5b8836d8625fbfa40a092386e645

          SHA1

          a90bb83f5d8d024bb357a44682267a50406071d6

          SHA256

          6dda4c9c34d1898b592ebeccee9f4b2a2bffefd68296da6310435e13fb63d950

          SHA512

          c50e53c2c695c7ba24b4cc2c2f958e1e9ce4eea9b541684ea41c7cae513919bb80171dcaaf1c18a8f37221737e6a1f8ba0881a224abd3dd09407d0c4edb96aae

        • memory/2724-91-0x0000000000400000-0x0000000000844000-memory.dmp

          Filesize

          4.3MB

        • memory/2724-78-0x0000000000400000-0x0000000000844000-memory.dmp

          Filesize

          4.3MB

        • memory/2724-113-0x0000000000400000-0x0000000000844000-memory.dmp

          Filesize

          4.3MB

        • memory/2724-110-0x0000000000400000-0x0000000000844000-memory.dmp

          Filesize

          4.3MB

        • memory/2724-106-0x0000000000400000-0x0000000000844000-memory.dmp

          Filesize

          4.3MB

        • memory/2724-103-0x0000000000400000-0x0000000000844000-memory.dmp

          Filesize

          4.3MB

        • memory/2724-100-0x0000000000400000-0x0000000000844000-memory.dmp

          Filesize

          4.3MB

        • memory/2724-66-0x0000000000400000-0x0000000000844000-memory.dmp

          Filesize

          4.3MB

        • memory/2724-97-0x0000000000400000-0x0000000000844000-memory.dmp

          Filesize

          4.3MB

        • memory/2724-94-0x0000000000400000-0x0000000000844000-memory.dmp

          Filesize

          4.3MB

        • memory/2724-69-0x0000000000400000-0x0000000000844000-memory.dmp

          Filesize

          4.3MB

        • memory/2724-72-0x0000000000400000-0x0000000000844000-memory.dmp

          Filesize

          4.3MB

        • memory/2724-75-0x0000000000400000-0x0000000000844000-memory.dmp

          Filesize

          4.3MB

        • memory/2724-88-0x0000000000400000-0x0000000000844000-memory.dmp

          Filesize

          4.3MB

        • memory/2724-81-0x0000000000400000-0x0000000000844000-memory.dmp

          Filesize

          4.3MB

        • memory/2724-84-0x00000000009B0000-0x0000000000A52000-memory.dmp

          Filesize

          648KB

        • memory/4576-13-0x0000000000400000-0x00000000004BD000-memory.dmp

          Filesize

          756KB

        • memory/4576-68-0x0000000000400000-0x00000000004BD000-memory.dmp

          Filesize

          756KB

        • memory/4640-63-0x0000000000400000-0x0000000000844000-memory.dmp

          Filesize

          4.3MB

        • memory/4640-62-0x0000000000400000-0x0000000000844000-memory.dmp

          Filesize

          4.3MB

        • memory/4640-59-0x0000000000400000-0x0000000000844000-memory.dmp

          Filesize

          4.3MB

        • memory/4640-58-0x0000000000400000-0x0000000000844000-memory.dmp

          Filesize

          4.3MB

        • memory/4936-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4936-67-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4936-2-0x0000000000401000-0x000000000040B000-memory.dmp

          Filesize

          40KB