Analysis

  • max time kernel
    300s
  • max time network
    287s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    30/05/2024, 22:36

General

  • Target

    16e0fef131c34d95ba6611400399c7ac46c1a8db8052b91a2c9af32534d3c825.exe

  • Size

    5.5MB

  • MD5

    91a41fd0df10dd851715588c0d362cf2

  • SHA1

    2cfc253b6b03518eb562877f2cf69b74f8eb36d3

  • SHA256

    16e0fef131c34d95ba6611400399c7ac46c1a8db8052b91a2c9af32534d3c825

  • SHA512

    d7902fe685c8c7d4a184490381aa3f3892be67c0a23fd6c3caf96d36f67f15fa0013c15ce8715be957ebd3c32bd470014447038a7fa8599291cc9e227a97c99e

  • SSDEEP

    98304:mG3jaDxNVESmoeafm5xtViQIszuI/4df0ZDytLwBRy/rM3i6BFeuZL0KoGk23:5zajS9su5DfIwuLdfXAyzix8uZ0Kop23

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 2 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.

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\16e0fef131c34d95ba6611400399c7ac46c1a8db8052b91a2c9af32534d3c825.exe
    "C:\Users\Admin\AppData\Local\Temp\16e0fef131c34d95ba6611400399c7ac46c1a8db8052b91a2c9af32534d3c825.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4948
    • C:\Users\Admin\AppData\Local\Temp\is-E142M.tmp\16e0fef131c34d95ba6611400399c7ac46c1a8db8052b91a2c9af32534d3c825.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-E142M.tmp\16e0fef131c34d95ba6611400399c7ac46c1a8db8052b91a2c9af32534d3c825.tmp" /SL5="$70220,5547890,54272,C:\Users\Admin\AppData\Local\Temp\16e0fef131c34d95ba6611400399c7ac46c1a8db8052b91a2c9af32534d3c825.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2896
      • C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
        "C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:3468
      • C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
        "C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:4696

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

          Filesize

          3.3MB

          MD5

          06234e1821a4b95d272b8edb195195dd

          SHA1

          9fbdead1e8c4b31aac9f0c41bde7abf90e79f1ac

          SHA256

          43dff468672483df85fa3f47f355f804f60eb1dc0373a06d29e69cd98cd52452

          SHA512

          1a5b40c8997c20e583f2d2d3d7d5bd45d1a7f3ab14a544d1e641f998982ec01fc69a93ba51df9ae4f5bffd1ea7fced317fac78b12a57832290039015e3ade50a

        • C:\Users\Admin\AppData\Local\Temp\is-E142M.tmp\16e0fef131c34d95ba6611400399c7ac46c1a8db8052b91a2c9af32534d3c825.tmp

          Filesize

          680KB

          MD5

          ef9105d68de970efad785e01b21e4e2b

          SHA1

          7fe8801a3e86814972da63a7a943bdc5e31d8888

          SHA256

          381198ca0669ab760f6f9b84e39c39ab5e870f65d17d03ed0dc572a1c602364a

          SHA512

          e388cbf32a4d833c0e4c6c1a129515b4d12eac5b333f2aec39e741d3a0da856c5923d47cf4d3083ad030f7f07b9214261b2b9119720920dd42929eeb617e779c

        • \Users\Admin\AppData\Local\Temp\is-9Q09M.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • \Users\Admin\AppData\Local\Temp\is-9Q09M.tmp\_isetup\_isdecmp.dll

          Filesize

          32KB

          MD5

          b6f11a0ab7715f570f45900a1fe84732

          SHA1

          77b1201e535445af5ea94c1b03c0a1c34d67a77b

          SHA256

          e47dd306a9854599f02bc1b07ca6dfbd5220f8a1352faa9616d1a327de0bbf67

          SHA512

          78a757e67d21eb7cc95954df15e3eeff56113d6b40fb73f0c5f53304265cc52c79125d6f1b3655b64f9a411711b5b70f746080d708d7c222f4e65bad64b1b771

        • memory/2896-73-0x0000000000400000-0x00000000004BA000-memory.dmp

          Filesize

          744KB

        • memory/2896-19-0x0000000000400000-0x00000000004BA000-memory.dmp

          Filesize

          744KB

        • memory/3468-69-0x0000000000400000-0x0000000000745000-memory.dmp

          Filesize

          3.3MB

        • memory/3468-65-0x0000000000400000-0x0000000000745000-memory.dmp

          Filesize

          3.3MB

        • memory/3468-66-0x0000000000400000-0x0000000000745000-memory.dmp

          Filesize

          3.3MB

        • memory/4696-86-0x0000000000400000-0x0000000000745000-memory.dmp

          Filesize

          3.3MB

        • memory/4696-99-0x0000000000400000-0x0000000000745000-memory.dmp

          Filesize

          3.3MB

        • memory/4696-133-0x0000000000400000-0x0000000000745000-memory.dmp

          Filesize

          3.3MB

        • memory/4696-74-0x0000000000400000-0x0000000000745000-memory.dmp

          Filesize

          3.3MB

        • memory/4696-77-0x0000000000400000-0x0000000000745000-memory.dmp

          Filesize

          3.3MB

        • memory/4696-80-0x0000000000400000-0x0000000000745000-memory.dmp

          Filesize

          3.3MB

        • memory/4696-83-0x0000000000400000-0x0000000000745000-memory.dmp

          Filesize

          3.3MB

        • memory/4696-130-0x0000000000400000-0x0000000000745000-memory.dmp

          Filesize

          3.3MB

        • memory/4696-89-0x0000000000AD0000-0x0000000000B72000-memory.dmp

          Filesize

          648KB

        • memory/4696-91-0x0000000000400000-0x0000000000745000-memory.dmp

          Filesize

          3.3MB

        • memory/4696-96-0x0000000000400000-0x0000000000745000-memory.dmp

          Filesize

          3.3MB

        • memory/4696-127-0x0000000000400000-0x0000000000745000-memory.dmp

          Filesize

          3.3MB

        • memory/4696-102-0x0000000000400000-0x0000000000745000-memory.dmp

          Filesize

          3.3MB

        • memory/4696-105-0x0000000000400000-0x0000000000745000-memory.dmp

          Filesize

          3.3MB

        • memory/4696-108-0x0000000000400000-0x0000000000745000-memory.dmp

          Filesize

          3.3MB

        • memory/4696-111-0x0000000000400000-0x0000000000745000-memory.dmp

          Filesize

          3.3MB

        • memory/4696-114-0x0000000000400000-0x0000000000745000-memory.dmp

          Filesize

          3.3MB

        • memory/4696-117-0x0000000000400000-0x0000000000745000-memory.dmp

          Filesize

          3.3MB

        • memory/4696-120-0x0000000000400000-0x0000000000745000-memory.dmp

          Filesize

          3.3MB

        • memory/4696-124-0x0000000000400000-0x0000000000745000-memory.dmp

          Filesize

          3.3MB

        • memory/4948-72-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4948-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4948-3-0x0000000000401000-0x000000000040B000-memory.dmp

          Filesize

          40KB