Analysis

  • max time kernel
    148s
  • max time network
    150s
  • 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, 00:38

General

  • Target

    88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.exe

  • Size

    4.7MB

  • MD5

    57ebe88416d90b8d2aa472e5f717cb73

  • SHA1

    8b3f37c002b6379248cb9007d9e38abf04f6d4f9

  • SHA256

    88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a

  • SHA512

    9b64524eb3218285ccb8df39919fd2cb8d04c9e8c1e26a04baa7fdc60323b8eedc50eada26428cda327d01c43fa998d3c24305544632cf615fcc68f5130eced5

  • SSDEEP

    98304:NlxB7sEAH8zTDotR7bpqj2PHx4hk8x4Gv3WrmU2dJ:9B78H8zgRnpqaPRS4wWrm7D

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\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.exe
    "C:\Users\Admin\AppData\Local\Temp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2204
    • C:\Users\Admin\AppData\Local\Temp\is-G29RC.tmp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-G29RC.tmp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp" /SL5="$110052,4604514,54272,C:\Users\Admin\AppData\Local\Temp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.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:3652
      • 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:1832
      • 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:1396

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

          aa6119d0f0efcc955229c1696b17ef79

          SHA1

          854c9ee06a6b422a883113d2b9099c7b4c13a475

          SHA256

          aa31c4972a1c6ee3fb24cc1cb3f5259f1f4cb3327b6fa23a1c7fe0b22906353c

          SHA512

          2aa64b484488bf95246271a062b5fa6e6faa4cfa97274cc377f12c8358fcbb18015f5218604c1ca4df7fd46ac65c7fa3fc80437865d8920d1c5fed8c51c74152

        • C:\Users\Admin\AppData\Local\Temp\is-AVA24.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • C:\Users\Admin\AppData\Local\Temp\is-AVA24.tmp\_isetup\_isdecmp.dll

          Filesize

          13KB

          MD5

          a813d18268affd4763dde940246dc7e5

          SHA1

          c7366e1fd925c17cc6068001bd38eaef5b42852f

          SHA256

          e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64

          SHA512

          b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4

        • C:\Users\Admin\AppData\Local\Temp\is-G29RC.tmp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp

          Filesize

          692KB

          MD5

          85fc5b8836d8625fbfa40a092386e645

          SHA1

          a90bb83f5d8d024bb357a44682267a50406071d6

          SHA256

          6dda4c9c34d1898b592ebeccee9f4b2a2bffefd68296da6310435e13fb63d950

          SHA512

          c50e53c2c695c7ba24b4cc2c2f958e1e9ce4eea9b541684ea41c7cae513919bb80171dcaaf1c18a8f37221737e6a1f8ba0881a224abd3dd09407d0c4edb96aae

        • memory/1396-91-0x0000000000400000-0x0000000000847000-memory.dmp

          Filesize

          4.3MB

        • memory/1396-97-0x0000000000400000-0x0000000000847000-memory.dmp

          Filesize

          4.3MB

        • memory/1396-113-0x0000000000400000-0x0000000000847000-memory.dmp

          Filesize

          4.3MB

        • memory/1396-110-0x0000000000400000-0x0000000000847000-memory.dmp

          Filesize

          4.3MB

        • memory/1396-106-0x0000000000400000-0x0000000000847000-memory.dmp

          Filesize

          4.3MB

        • memory/1396-103-0x0000000000400000-0x0000000000847000-memory.dmp

          Filesize

          4.3MB

        • memory/1396-66-0x0000000000400000-0x0000000000847000-memory.dmp

          Filesize

          4.3MB

        • memory/1396-100-0x0000000000400000-0x0000000000847000-memory.dmp

          Filesize

          4.3MB

        • memory/1396-94-0x0000000000400000-0x0000000000847000-memory.dmp

          Filesize

          4.3MB

        • memory/1396-88-0x0000000000400000-0x0000000000847000-memory.dmp

          Filesize

          4.3MB

        • memory/1396-69-0x0000000000400000-0x0000000000847000-memory.dmp

          Filesize

          4.3MB

        • memory/1396-72-0x0000000000400000-0x0000000000847000-memory.dmp

          Filesize

          4.3MB

        • memory/1396-75-0x0000000000400000-0x0000000000847000-memory.dmp

          Filesize

          4.3MB

        • memory/1396-78-0x0000000000400000-0x0000000000847000-memory.dmp

          Filesize

          4.3MB

        • memory/1396-81-0x0000000000400000-0x0000000000847000-memory.dmp

          Filesize

          4.3MB

        • memory/1396-84-0x0000000000B40000-0x0000000000BE2000-memory.dmp

          Filesize

          648KB

        • memory/1832-62-0x0000000000400000-0x0000000000847000-memory.dmp

          Filesize

          4.3MB

        • memory/1832-63-0x0000000000400000-0x0000000000847000-memory.dmp

          Filesize

          4.3MB

        • memory/1832-59-0x0000000000400000-0x0000000000847000-memory.dmp

          Filesize

          4.3MB

        • memory/1832-57-0x0000000000400000-0x0000000000847000-memory.dmp

          Filesize

          4.3MB

        • memory/2204-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/2204-67-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/2204-2-0x0000000000401000-0x000000000040B000-memory.dmp

          Filesize

          40KB

        • memory/3652-68-0x0000000000400000-0x00000000004BD000-memory.dmp

          Filesize

          756KB

        • memory/3652-22-0x0000000000400000-0x00000000004BD000-memory.dmp

          Filesize

          756KB