Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/03/2024, 14:58

General

  • Target

    439bb9a19bb23e3d53382ca036e1ca4536930faf2d97c90765db4ebe9d3cae5d.exe

  • Size

    2.2MB

  • MD5

    e4bbedd728a07b1b2941e5f59e90ccff

  • SHA1

    7ae938d9e714370991b7015423e7ecf1ca18f5b6

  • SHA256

    439bb9a19bb23e3d53382ca036e1ca4536930faf2d97c90765db4ebe9d3cae5d

  • SHA512

    f89ce3ecbc86d5d91b8a83c805a67457f12bf7a72afb2aabea07b5dd6f2a5e9a80b30757bf9d9b64d6b39538f66c71eecaf143246141677c92438383468ec80c

  • SSDEEP

    49152:32bIF4983HKTmzVLWla5GtqkXlXs0RGtYgCIIyCAITIpHY47H:mbU4CUsLSa5wqO6CRIhX247H

Malware Config

Extracted

Family

socks5systemz

C2

http://beoruby.com/search/?q=67e28dd86b5ea42a430af91a7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a771ea771795af8e05c642db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ffe13c0ea9c9e32

http://beoruby.com/search/?q=67e28dd86b5ea42a430af91a7c27d78406abdd88be4b12eab517aa5c96bd86eb97854b815a8bbc896c58e713bc90c91936b5281fc235a925ed3e04d6bd974a95129070b611e96cc92be510b866db52b2e34aec4c2b14a82966836f23d7f210c7ee94983bc866921f

Signatures

  • Detect Socks5Systemz Payload 5 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 WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\439bb9a19bb23e3d53382ca036e1ca4536930faf2d97c90765db4ebe9d3cae5d.exe
    "C:\Users\Admin\AppData\Local\Temp\439bb9a19bb23e3d53382ca036e1ca4536930faf2d97c90765db4ebe9d3cae5d.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1380
    • C:\Users\Admin\AppData\Local\Temp\is-R79IK.tmp\439bb9a19bb23e3d53382ca036e1ca4536930faf2d97c90765db4ebe9d3cae5d.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-R79IK.tmp\439bb9a19bb23e3d53382ca036e1ca4536930faf2d97c90765db4ebe9d3cae5d.tmp" /SL5="$E0064,1952650,54272,C:\Users\Admin\AppData\Local\Temp\439bb9a19bb23e3d53382ca036e1ca4536930faf2d97c90765db4ebe9d3cae5d.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:3528
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -i
        3⤵
        • Executes dropped EXE
        PID:4380
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -s
        3⤵
        • Executes dropped EXE
        PID:4856

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe

          Filesize

          2.2MB

          MD5

          86cf5258118a62c608edf51f6bcb094e

          SHA1

          32d048d04de641f88b90eb7a9eb76b3e7eb51d59

          SHA256

          6a53701555c4b60e1351523354f2fdc3e30e6641767051cfc2e64c5d40c5ffe4

          SHA512

          242b4c5e9a09bb33f56cf5d08516eeedd59dff540702f356b77384618e475f2503fde2869b27e570b4d2f2dd7e0a0cd4ceb64ab61961b8b8e16800ca45bf0a07

        • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe

          Filesize

          960KB

          MD5

          bd59eabbb146d85c0e8eaa248782c8df

          SHA1

          49ac7a6abe70f58a35f8fa1e9504120d46264b0d

          SHA256

          3456bba88c9007046abed6c5dcf92f91e19e7b72d184e2fd30ac86e32da3c768

          SHA512

          3bcfba85a576dce108a2b6ee216fc4e48eb628a07b6ce55099423564717d6d8e609a6b2b3e14bfd06ef2921bce893dc13bc643739a88c1b6c09ed83826dd4548

        • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe

          Filesize

          576KB

          MD5

          e8f3dd8a3a5f77e0536ff662dc0fb847

          SHA1

          e7ed2e31e04a930f735d82411ce9950ce0bbcb4d

          SHA256

          bd0975f4f69691a868ff0670aa09128c490ca530f567d6840e693c66781d8cb7

          SHA512

          8cb499c91e0105a7cb2ed54410188cfb1a581974bb67bc9b4e241667429308e74abeda9a5cbdce9d9c8801e0cef09549512b5145b85e4c8af40bb62d8b7216c2

        • C:\Users\Admin\AppData\Local\Temp\is-729TK.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • C:\Users\Admin\AppData\Local\Temp\is-R79IK.tmp\439bb9a19bb23e3d53382ca036e1ca4536930faf2d97c90765db4ebe9d3cae5d.tmp

          Filesize

          677KB

          MD5

          d394fc26de69f06950dc1c71959b0261

          SHA1

          7c9448fc3582f19763eaa8e3c5383b7873aee017

          SHA256

          405e474735b776fc09dc71d3a5b44c50b9e2c745cdf7e79eb89dc791866ffe2a

          SHA512

          63ef7265aac27715f5b799b588955dd5df3f49ecd0042fba69d0effe7dfe24d6777079677a809e817e4e8243a2185ca9c3a8022c9247bb2a070c213f06d7bc10

        • memory/1380-2-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/1380-47-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/1380-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/3528-7-0x0000000002240000-0x0000000002241000-memory.dmp

          Filesize

          4KB

        • memory/3528-50-0x0000000002240000-0x0000000002241000-memory.dmp

          Filesize

          4KB

        • memory/3528-48-0x0000000000400000-0x00000000004B8000-memory.dmp

          Filesize

          736KB

        • memory/4380-40-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/4380-43-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/4380-39-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/4380-38-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/4856-54-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/4856-77-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/4856-53-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/4856-46-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/4856-57-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/4856-60-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/4856-63-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/4856-66-0x00000000023C0000-0x0000000002462000-memory.dmp

          Filesize

          648KB

        • memory/4856-67-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/4856-69-0x00000000023C0000-0x0000000002462000-memory.dmp

          Filesize

          648KB

        • memory/4856-74-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/4856-49-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/4856-78-0x00000000023C0000-0x0000000002462000-memory.dmp

          Filesize

          648KB

        • memory/4856-81-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/4856-84-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/4856-87-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/4856-90-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/4856-91-0x00000000023C0000-0x0000000002462000-memory.dmp

          Filesize

          648KB

        • memory/4856-92-0x00000000023C0000-0x0000000002462000-memory.dmp

          Filesize

          648KB

        • memory/4856-96-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/4856-99-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB