Analysis

  • max time kernel
    142s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240508-en
  • resource tags

    arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    30-05-2024 15:57

General

  • Target

    b3e9e9c375884de466aa2ae8b8119999ff7b23b46863b6ecf1c9a47be166ee3e.exe

  • Size

    5.5MB

  • MD5

    c041ef0dd855b282f28d8bd6ff5f82b9

  • SHA1

    2bedcdf862a8622e1e681548b35a175aa94f68cf

  • SHA256

    b3e9e9c375884de466aa2ae8b8119999ff7b23b46863b6ecf1c9a47be166ee3e

  • SHA512

    d97d7d34ee6e3b7cfc62af3ec3285e9f02c1eab8506d5e8ac1e8f88f22aa55e5a0cdaf76f0955fad816144d7baa6d9dd10a9d393817408d9597fab51cbb135ba

  • SSDEEP

    98304:mTvlDZjrUjB/rlaUv47mkHCdFg7zIyvF4gIA5E1i1gXGKP7OJZkrC:ijrIPv47mkHC7g7Mg+xwuGKjMZx

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.

  • 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\b3e9e9c375884de466aa2ae8b8119999ff7b23b46863b6ecf1c9a47be166ee3e.exe
    "C:\Users\Admin\AppData\Local\Temp\b3e9e9c375884de466aa2ae8b8119999ff7b23b46863b6ecf1c9a47be166ee3e.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4408
    • C:\Users\Admin\AppData\Local\Temp\is-9DLI9.tmp\b3e9e9c375884de466aa2ae8b8119999ff7b23b46863b6ecf1c9a47be166ee3e.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-9DLI9.tmp\b3e9e9c375884de466aa2ae8b8119999ff7b23b46863b6ecf1c9a47be166ee3e.tmp" /SL5="$70250,5549854,54272,C:\Users\Admin\AppData\Local\Temp\b3e9e9c375884de466aa2ae8b8119999ff7b23b46863b6ecf1c9a47be166ee3e.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4696
      • C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
        "C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:2156
      • C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
        "C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:3068

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

    01f2c69f3b8f2e5d86870189e3cda680

    SHA1

    a90a1a615bdd2e189315130b1d1ec7539dfb38d7

    SHA256

    37debc79084e3704939fed00ba07088b43bf257a225f5ac729f2093ed36a0f93

    SHA512

    9f9064b51a2fde4c74052af80db2a2fda91aec61420bf8900d9a02085ee93c7eaac1d80d5d5a63dc094122fabcdc30e71808391d2e11e93f450e8de3449cdfd4

  • C:\Users\Admin\AppData\Local\Temp\is-66M1G.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-66M1G.tmp\_isetup\_isdecmp.dll

    Filesize

    32KB

    MD5

    b6f11a0ab7715f570f45900a1fe84732

    SHA1

    77b1201e535445af5ea94c1b03c0a1c34d67a77b

    SHA256

    e47dd306a9854599f02bc1b07ca6dfbd5220f8a1352faa9616d1a327de0bbf67

    SHA512

    78a757e67d21eb7cc95954df15e3eeff56113d6b40fb73f0c5f53304265cc52c79125d6f1b3655b64f9a411711b5b70f746080d708d7c222f4e65bad64b1b771

  • C:\Users\Admin\AppData\Local\Temp\is-9DLI9.tmp\b3e9e9c375884de466aa2ae8b8119999ff7b23b46863b6ecf1c9a47be166ee3e.tmp

    Filesize

    680KB

    MD5

    0618c738cf49fa5f045702c69585d459

    SHA1

    c71706644125d08fabf067cbe06030fb9795a2e8

    SHA256

    32d63dc7b012c5855667c4b809b98b42b2a841d38e5350fe7b603b46a74d484e

    SHA512

    bd042294fe9a09b01013d94211cf89ec4c7b1bfec384eb717a25ea864e2c9154ba082b5d9ccc9fd5e04d3b551f7bfdfea5d96d74056e5e27811a9cc4aaecc43a

  • memory/2156-70-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/2156-65-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/2156-69-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2156-68-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3068-80-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3068-93-0x0000000000A70000-0x0000000000B12000-memory.dmp

    Filesize

    648KB

  • memory/3068-72-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3068-126-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3068-74-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3068-123-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3068-119-0x0000000000A70000-0x0000000000B12000-memory.dmp

    Filesize

    648KB

  • memory/3068-77-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3068-118-0x0000000000A70000-0x0000000000B12000-memory.dmp

    Filesize

    648KB

  • memory/3068-81-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3068-84-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3068-87-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3068-90-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3068-117-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3068-96-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3068-101-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3068-104-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3068-105-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3068-108-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3068-111-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3068-114-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/4408-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4408-75-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4408-2-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/4696-12-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4696-76-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB