Analysis

  • max time kernel
    141s
  • max time network
    127s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240221-en
  • resource tags

    arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    23/03/2024, 11:19

General

  • Target

    dd2a7b01159e95ee8741fbbd0b0ee206cd8424bcef4f4e41b3c2a4c41e9a3585.exe

  • Size

    2.0MB

  • MD5

    f58cd7703329922a2ed72ad44b8edf5e

  • SHA1

    144f9fb2cfaa6b91dd9562a12e692d2a681e5786

  • SHA256

    dd2a7b01159e95ee8741fbbd0b0ee206cd8424bcef4f4e41b3c2a4c41e9a3585

  • SHA512

    4ccbf86372c1afa4ccd973dc35729fd78d195cca3b603a71688df6e104febf54f7001a8bd377cb442405ec7a6945a92a506c199adbfa3fb16625fc01b2a08155

  • SSDEEP

    49152:32gnMidDCERMfKj78jlLLm+qAP2X5CNyihe7D:mgnMidDCEGHlfP2X56hc

Malware Config

Extracted

Family

socks5systemz

C2

http://bfhrqxx.com/search/?q=67e28dd8645af52e420aad1d7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ee8889b5e4fa9281ae978a371ea771795af8e05c647db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe10c9ed9d9f38

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 WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dd2a7b01159e95ee8741fbbd0b0ee206cd8424bcef4f4e41b3c2a4c41e9a3585.exe
    "C:\Users\Admin\AppData\Local\Temp\dd2a7b01159e95ee8741fbbd0b0ee206cd8424bcef4f4e41b3c2a4c41e9a3585.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4024
    • C:\Users\Admin\AppData\Local\Temp\is-C1HA5.tmp\dd2a7b01159e95ee8741fbbd0b0ee206cd8424bcef4f4e41b3c2a4c41e9a3585.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-C1HA5.tmp\dd2a7b01159e95ee8741fbbd0b0ee206cd8424bcef4f4e41b3c2a4c41e9a3585.tmp" /SL5="$60106,1743789,54272,C:\Users\Admin\AppData\Local\Temp\dd2a7b01159e95ee8741fbbd0b0ee206cd8424bcef4f4e41b3c2a4c41e9a3585.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1508
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -i
        3⤵
        • Executes dropped EXE
        PID:2856
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -s
        3⤵
        • Executes dropped EXE
        PID:4836

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          2.0MB

          MD5

          bd244b8c4f71095e22e91c28cf8ddf5f

          SHA1

          408f4715a5ee3d959af04467f2e079b6cd8715e7

          SHA256

          172a6545ebf5697a6ca7ca113a262c4b3376ea634db1658db03fd5d11c478252

          SHA512

          03af046fee90e21eabd2b120b4072e5be863d39b3b674c0f5c7e7e9366f39ab70946eb36de62d1dd6f4256ef97f7af27c7c4cc991d52c51bec54dd4ef96eec08

        • C:\Users\Admin\AppData\Local\Temp\is-9I5HI.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • C:\Users\Admin\AppData\Local\Temp\is-C1HA5.tmp\dd2a7b01159e95ee8741fbbd0b0ee206cd8424bcef4f4e41b3c2a4c41e9a3585.tmp

          Filesize

          677KB

          MD5

          92f7775908bb12183914bb0753782913

          SHA1

          8d1091da36832942d48f2fe9a1a216fdd556b9c4

          SHA256

          a43c4e3916a92d299c22e2010383b2a8f85e14882a610de57bb2fef91f7984ed

          SHA512

          7e39cafdc00a46f2353f6eeaa8fee0d7c94f489d1fd4581e125408bae63a2e6cd135f65807c3574c833f970b64106badb7dd0a2a6ee9859b3b60b3d1b6e19c39

        • memory/1508-49-0x0000000002300000-0x0000000002301000-memory.dmp

          Filesize

          4KB

        • memory/1508-6-0x0000000002300000-0x0000000002301000-memory.dmp

          Filesize

          4KB

        • memory/1508-47-0x0000000000400000-0x00000000004B8000-memory.dmp

          Filesize

          736KB

        • memory/2856-37-0x0000000000400000-0x000000000060E000-memory.dmp

          Filesize

          2.1MB

        • memory/2856-38-0x0000000000400000-0x000000000060E000-memory.dmp

          Filesize

          2.1MB

        • memory/2856-42-0x0000000000400000-0x000000000060E000-memory.dmp

          Filesize

          2.1MB

        • memory/2856-41-0x0000000000400000-0x000000000060E000-memory.dmp

          Filesize

          2.1MB

        • memory/4024-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4024-46-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4836-52-0x0000000000400000-0x000000000060E000-memory.dmp

          Filesize

          2.1MB

        • memory/4836-68-0x0000000000A30000-0x0000000000AD2000-memory.dmp

          Filesize

          648KB

        • memory/4836-45-0x0000000000400000-0x000000000060E000-memory.dmp

          Filesize

          2.1MB

        • memory/4836-53-0x0000000000400000-0x000000000060E000-memory.dmp

          Filesize

          2.1MB

        • memory/4836-56-0x0000000000400000-0x000000000060E000-memory.dmp

          Filesize

          2.1MB

        • memory/4836-59-0x0000000000400000-0x000000000060E000-memory.dmp

          Filesize

          2.1MB

        • memory/4836-62-0x0000000000400000-0x000000000060E000-memory.dmp

          Filesize

          2.1MB

        • memory/4836-64-0x0000000000A30000-0x0000000000AD2000-memory.dmp

          Filesize

          648KB

        • memory/4836-66-0x0000000000400000-0x000000000060E000-memory.dmp

          Filesize

          2.1MB

        • memory/4836-48-0x0000000000400000-0x000000000060E000-memory.dmp

          Filesize

          2.1MB

        • memory/4836-73-0x0000000000400000-0x000000000060E000-memory.dmp

          Filesize

          2.1MB

        • memory/4836-76-0x0000000000400000-0x000000000060E000-memory.dmp

          Filesize

          2.1MB

        • memory/4836-77-0x0000000000A30000-0x0000000000AD2000-memory.dmp

          Filesize

          648KB

        • memory/4836-80-0x0000000000400000-0x000000000060E000-memory.dmp

          Filesize

          2.1MB

        • memory/4836-83-0x0000000000400000-0x000000000060E000-memory.dmp

          Filesize

          2.1MB

        • memory/4836-86-0x0000000000400000-0x000000000060E000-memory.dmp

          Filesize

          2.1MB

        • memory/4836-89-0x0000000000400000-0x000000000060E000-memory.dmp

          Filesize

          2.1MB

        • memory/4836-92-0x0000000000400000-0x000000000060E000-memory.dmp

          Filesize

          2.1MB

        • memory/4836-95-0x0000000000400000-0x000000000060E000-memory.dmp

          Filesize

          2.1MB