Analysis

  • max time kernel
    141s
  • max time network
    129s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240611-en
  • resource tags

    arch:x64arch:x86image:win11-20240611-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    24-06-2024 23:24

General

  • Target

    717094f9d9b62b89ac60f7a696856b1114c54e7d519ef80e5e32d4284c64093e.exe

  • Size

    4.8MB

  • MD5

    99a9c6a07e1c9e5a9fcaac8426b786ae

  • SHA1

    49c94499d6c7a963e3e4785010bd8a8de3e51bbb

  • SHA256

    717094f9d9b62b89ac60f7a696856b1114c54e7d519ef80e5e32d4284c64093e

  • SHA512

    600f504c4dfa25853a1f052dd3f0b0428f135215651de7e583ed0d900fd7f8355ed78a434649dde386bf3ddb572117d369b2ae59b5f32ed9592e3ef9c1f9450c

  • SSDEEP

    98304:mhJbYijBuXJSNvoizfa3cf6di971pVnK4YVJefbZ10SP1LP/QwsK:6JUSNv9zfa3cV9pnZ110SP1LnQhK

Malware Config

Extracted

Family

socks5systemz

C2

buzoylh.com

http://buzoylh.com/search/?q=67e28dd86c5af52d4607af197c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ee8889b5e4fa9281ae978a571ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff613c7ee909f3e

http://buzoylh.com/search/?q=67e28dd86c5af52d4607af197c27d78406abdd88be4b12eab517aa5c96bd86ee968448845a8bbc896c58e713bc90c91b36b5281fc235a925ed3e06d6bd974a95129070b616e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee9c983ccc6a9313

Signatures

  • Detect Socks5Systemz Payload 3 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 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\717094f9d9b62b89ac60f7a696856b1114c54e7d519ef80e5e32d4284c64093e.exe
    "C:\Users\Admin\AppData\Local\Temp\717094f9d9b62b89ac60f7a696856b1114c54e7d519ef80e5e32d4284c64093e.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2684
    • C:\Users\Admin\AppData\Local\Temp\is-VGNH3.tmp\717094f9d9b62b89ac60f7a696856b1114c54e7d519ef80e5e32d4284c64093e.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-VGNH3.tmp\717094f9d9b62b89ac60f7a696856b1114c54e7d519ef80e5e32d4284c64093e.tmp" /SL5="$90066,4753091,54272,C:\Users\Admin\AppData\Local\Temp\717094f9d9b62b89ac60f7a696856b1114c54e7d519ef80e5e32d4284c64093e.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4320
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:3144
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:3148

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\is-T5K0H.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-VGNH3.tmp\717094f9d9b62b89ac60f7a696856b1114c54e7d519ef80e5e32d4284c64093e.tmp

    Filesize

    680KB

    MD5

    1b33096a94e46692ad4d81f4d479a4e6

    SHA1

    c1258a69a0e5888e3292f4c9956a930a2d858e88

    SHA256

    3cee8718764f6cd90530e38825c9496c2b34e74421c3d07afce6a55f746c2a47

    SHA512

    3623b7ae8ad23074614b5f7264ae8a952c9b5de8882559075bf76a87d8fa3632d66c6897fa738e82c6bbedee1e4ee8f169dfc61decafef9978c32d77dd9214f6

  • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe

    Filesize

    2.8MB

    MD5

    034a19364a29f0ec88b84ea44eee384d

    SHA1

    9ea97df0dc8d7aa392f5c792adb79285677534cc

    SHA256

    73158339e43631670b50e61ada31c6ade8ab2f98ff569430b25acb22e5e9696b

    SHA512

    ef6114679bde6c6d8ea6b317980fe8070481546d79ee6b1550284fb990993085719c6081e09d1ddc127869483f127f42e2531ded0e7ec52c5645d3d94865a584

  • memory/2684-69-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/2684-2-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/2684-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/3144-59-0x0000000000400000-0x00000000006C7000-memory.dmp

    Filesize

    2.8MB

  • memory/3144-60-0x0000000000400000-0x00000000006C7000-memory.dmp

    Filesize

    2.8MB

  • memory/3144-63-0x0000000000400000-0x00000000006C7000-memory.dmp

    Filesize

    2.8MB

  • memory/3144-65-0x0000000000400000-0x00000000006C7000-memory.dmp

    Filesize

    2.8MB

  • memory/3148-74-0x0000000000400000-0x00000000006C7000-memory.dmp

    Filesize

    2.8MB

  • memory/3148-89-0x0000000000400000-0x00000000006C7000-memory.dmp

    Filesize

    2.8MB

  • memory/3148-118-0x0000000000400000-0x00000000006C7000-memory.dmp

    Filesize

    2.8MB

  • memory/3148-71-0x0000000000400000-0x00000000006C7000-memory.dmp

    Filesize

    2.8MB

  • memory/3148-115-0x0000000000400000-0x00000000006C7000-memory.dmp

    Filesize

    2.8MB

  • memory/3148-77-0x0000000000400000-0x00000000006C7000-memory.dmp

    Filesize

    2.8MB

  • memory/3148-80-0x0000000000400000-0x00000000006C7000-memory.dmp

    Filesize

    2.8MB

  • memory/3148-83-0x0000000000400000-0x00000000006C7000-memory.dmp

    Filesize

    2.8MB

  • memory/3148-86-0x0000000000A60000-0x0000000000B02000-memory.dmp

    Filesize

    648KB

  • memory/3148-68-0x0000000000400000-0x00000000006C7000-memory.dmp

    Filesize

    2.8MB

  • memory/3148-94-0x0000000000400000-0x00000000006C7000-memory.dmp

    Filesize

    2.8MB

  • memory/3148-97-0x0000000000400000-0x00000000006C7000-memory.dmp

    Filesize

    2.8MB

  • memory/3148-100-0x0000000000400000-0x00000000006C7000-memory.dmp

    Filesize

    2.8MB

  • memory/3148-103-0x0000000000400000-0x00000000006C7000-memory.dmp

    Filesize

    2.8MB

  • memory/3148-106-0x0000000000400000-0x00000000006C7000-memory.dmp

    Filesize

    2.8MB

  • memory/3148-109-0x0000000000400000-0x00000000006C7000-memory.dmp

    Filesize

    2.8MB

  • memory/3148-110-0x0000000000A60000-0x0000000000B02000-memory.dmp

    Filesize

    648KB

  • memory/3148-111-0x0000000000A60000-0x0000000000B02000-memory.dmp

    Filesize

    648KB

  • memory/4320-16-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4320-70-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB