Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240426-en
  • resource tags

    arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    30-05-2024 19:40

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 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\16e0fef131c34d95ba6611400399c7ac46c1a8db8052b91a2c9af32534d3c825.exe
    "C:\Users\Admin\AppData\Local\Temp\16e0fef131c34d95ba6611400399c7ac46c1a8db8052b91a2c9af32534d3c825.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4596
    • C:\Users\Admin\AppData\Local\Temp\is-6ICIJ.tmp\16e0fef131c34d95ba6611400399c7ac46c1a8db8052b91a2c9af32534d3c825.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-6ICIJ.tmp\16e0fef131c34d95ba6611400399c7ac46c1a8db8052b91a2c9af32534d3c825.tmp" /SL5="$4023E,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:3432
      • C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
        "C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:2496
      • C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
        "C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:3332

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-32SHN.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-32SHN.tmp\_isetup\_isdecmp.dll

    Filesize

    32KB

    MD5

    b6f11a0ab7715f570f45900a1fe84732

    SHA1

    77b1201e535445af5ea94c1b03c0a1c34d67a77b

    SHA256

    e47dd306a9854599f02bc1b07ca6dfbd5220f8a1352faa9616d1a327de0bbf67

    SHA512

    78a757e67d21eb7cc95954df15e3eeff56113d6b40fb73f0c5f53304265cc52c79125d6f1b3655b64f9a411711b5b70f746080d708d7c222f4e65bad64b1b771

  • C:\Users\Admin\AppData\Local\Temp\is-6ICIJ.tmp\16e0fef131c34d95ba6611400399c7ac46c1a8db8052b91a2c9af32534d3c825.tmp

    Filesize

    680KB

    MD5

    ef9105d68de970efad785e01b21e4e2b

    SHA1

    7fe8801a3e86814972da63a7a943bdc5e31d8888

    SHA256

    381198ca0669ab760f6f9b84e39c39ab5e870f65d17d03ed0dc572a1c602364a

    SHA512

    e388cbf32a4d833c0e4c6c1a129515b4d12eac5b333f2aec39e741d3a0da856c5923d47cf4d3083ad030f7f07b9214261b2b9119720920dd42929eeb617e779c

  • memory/2496-66-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/2496-70-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/2496-71-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/2496-65-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3332-94-0x0000000000B40000-0x0000000000BE2000-memory.dmp

    Filesize

    648KB

  • memory/3332-104-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3332-122-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3332-75-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3332-74-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3332-119-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3332-116-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3332-78-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3332-81-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3332-82-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3332-85-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3332-88-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3332-91-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3332-113-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3332-96-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3332-101-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3332-110-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3332-107-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3432-10-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/3432-77-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4596-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4596-76-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4596-3-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB