Analysis

  • max time kernel
    143s
  • max time network
    126s
  • 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, 23:02

General

  • Target

    74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.exe

  • Size

    4.5MB

  • MD5

    736f88af8227596dd1f4ef11e8e4cfdd

  • SHA1

    93e2777b194f337cbe087e0afabfa40332ce408e

  • SHA256

    74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5

  • SHA512

    1bfc55f5298d32418a9b6290cb9990efb07b35c32e204872c7d3f9807728d6dcd0a8bb046526c4d69673e2a795e76d2e734aace4e226c2896b4a8f7f3e683b7e

  • SSDEEP

    98304:N+EHLzC/YF25r6Snjw11s497EwMBow6I/VfV2WfNXgWq1b+dRiVdJ:RHLm/Q0G/KwUow6e39gWq9+ID

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\74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.exe
    "C:\Users\Admin\AppData\Local\Temp\74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4892
    • C:\Users\Admin\AppData\Local\Temp\is-O2E8F.tmp\74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-O2E8F.tmp\74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.tmp" /SL5="$6023C,4416507,54272,C:\Users\Admin\AppData\Local\Temp\74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.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:2188
      • 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:2668
      • 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:2256

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

          acaf2d107e0e9327bb19058aadee11f4

          SHA1

          990753e42e071338a6d91ce432c213ebbf81b941

          SHA256

          1cc164fc6b3adb1f8c831d1792568e0ce2efb161356f601c8d7c365a3fb65d0f

          SHA512

          501d75adf508b62679b7357018a44572b89eaec7863485ca1a4165cf3a8a87e9e0554b519e4db173760aa8082e9c980e962ba8961ee66431f6350f8d1db6f0a3

        • C:\Users\Admin\AppData\Local\Temp\is-3TEJF.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • C:\Users\Admin\AppData\Local\Temp\is-3TEJF.tmp\_isetup\_isdecmp.dll

          Filesize

          13KB

          MD5

          a813d18268affd4763dde940246dc7e5

          SHA1

          c7366e1fd925c17cc6068001bd38eaef5b42852f

          SHA256

          e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64

          SHA512

          b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4

        • C:\Users\Admin\AppData\Local\Temp\is-O2E8F.tmp\74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.tmp

          Filesize

          692KB

          MD5

          85fc5b8836d8625fbfa40a092386e645

          SHA1

          a90bb83f5d8d024bb357a44682267a50406071d6

          SHA256

          6dda4c9c34d1898b592ebeccee9f4b2a2bffefd68296da6310435e13fb63d950

          SHA512

          c50e53c2c695c7ba24b4cc2c2f958e1e9ce4eea9b541684ea41c7cae513919bb80171dcaaf1c18a8f37221737e6a1f8ba0881a224abd3dd09407d0c4edb96aae

        • memory/2188-68-0x0000000000400000-0x00000000004BD000-memory.dmp

          Filesize

          756KB

        • memory/2188-10-0x0000000000400000-0x00000000004BD000-memory.dmp

          Filesize

          756KB

        • memory/2256-105-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/2256-72-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/2256-109-0x0000000000A00000-0x0000000000AA2000-memory.dmp

          Filesize

          648KB

        • memory/2256-110-0x0000000000A00000-0x0000000000AA2000-memory.dmp

          Filesize

          648KB

        • memory/2256-108-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/2256-66-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/2256-99-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/2256-117-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/2256-69-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/2256-114-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/2256-102-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/2256-74-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/2256-77-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/2256-80-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/2256-83-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/2256-86-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/2256-87-0x0000000000A00000-0x0000000000AA2000-memory.dmp

          Filesize

          648KB

        • memory/2256-93-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/2256-96-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/2668-63-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/2668-73-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/2668-58-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/2668-59-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/2668-62-0x0000000000400000-0x0000000000815000-memory.dmp

          Filesize

          4.1MB

        • memory/4892-67-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4892-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4892-2-0x0000000000401000-0x000000000040B000-memory.dmp

          Filesize

          40KB