Analysis

  • max time kernel
    146s
  • max time network
    150s
  • 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, 13:21

General

  • Target

    8463f0c1e828afc585438c68123cc4b55628bc2ec18c58671e13f9439af31fe4.exe

  • Size

    2.2MB

  • MD5

    25cb7192c8f7a3bfec2a4817f8552ca7

  • SHA1

    cc221059563e9e8025805a42a9a46154feedd55d

  • SHA256

    8463f0c1e828afc585438c68123cc4b55628bc2ec18c58671e13f9439af31fe4

  • SHA512

    fafea40044db5c00ae813ed91da0aeb40eb35602dc4265a5a0d50f95c13cfe878d079e45f42c1eb533dc366f88576f00ab539122783aece8c46b338ef458687f

  • SSDEEP

    49152:32mFbq6TKK/DUgI/Guo+HoJ7P7Ea2ieZl53e7D:m+b1TKqqGXkopP2iex3c

Malware Config

Extracted

Family

socks5systemz

C2

http://bxtsbvh.com/search/?q=67e28dd83d54f12b140cff197c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4de8889b5e4fa9281ae978a271ea771795af8e05c642db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe13c0ef949238

http://bxtsbvh.com/search/?q=67e28dd83d54f12b140cff197c27d78406abdd88be4b12eab517aa5c96bd86ec9c8f44805a8bbc896c58e713bc90c91836b5281fc235a925ed3e01d6bd974a95129070b611e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee94983bcd6e9e15

Signatures

  • Detect Socks5Systemz Payload 4 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\8463f0c1e828afc585438c68123cc4b55628bc2ec18c58671e13f9439af31fe4.exe
    "C:\Users\Admin\AppData\Local\Temp\8463f0c1e828afc585438c68123cc4b55628bc2ec18c58671e13f9439af31fe4.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3404
    • C:\Users\Admin\AppData\Local\Temp\is-B4HHJ.tmp\8463f0c1e828afc585438c68123cc4b55628bc2ec18c58671e13f9439af31fe4.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-B4HHJ.tmp\8463f0c1e828afc585438c68123cc4b55628bc2ec18c58671e13f9439af31fe4.tmp" /SL5="$800D8,1960984,54272,C:\Users\Admin\AppData\Local\Temp\8463f0c1e828afc585438c68123cc4b55628bc2ec18c58671e13f9439af31fe4.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:824
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -i
        3⤵
        • Executes dropped EXE
        PID:2864
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -s
        3⤵
        • Executes dropped EXE
        PID:1628

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

          21fd5e2dba33cafdfc9574a3eb37aac5

          SHA1

          ac88f469467f09dc782024e5a6c78bdda925563a

          SHA256

          f338953864a2015f9d3a1a9543dd321c9fbc81123f8c3f303a741bef11ff60e7

          SHA512

          430f4ad309d8e42c5e7e31d5eb555db1dfcf4dc00d4398104ffce23c39a91340f360071bf138fe79e0385bc0cd2e29de89166f3d67fa8deb9bf11f08f65a998a

        • C:\Users\Admin\AppData\Local\Temp\is-B4HHJ.tmp\8463f0c1e828afc585438c68123cc4b55628bc2ec18c58671e13f9439af31fe4.tmp

          Filesize

          677KB

          MD5

          92f7775908bb12183914bb0753782913

          SHA1

          8d1091da36832942d48f2fe9a1a216fdd556b9c4

          SHA256

          a43c4e3916a92d299c22e2010383b2a8f85e14882a610de57bb2fef91f7984ed

          SHA512

          7e39cafdc00a46f2353f6eeaa8fee0d7c94f489d1fd4581e125408bae63a2e6cd135f65807c3574c833f970b64106badb7dd0a2a6ee9859b3b60b3d1b6e19c39

        • C:\Users\Admin\AppData\Local\Temp\is-KG63V.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • memory/824-47-0x0000000000400000-0x00000000004B8000-memory.dmp

          Filesize

          736KB

        • memory/824-49-0x0000000002200000-0x0000000002201000-memory.dmp

          Filesize

          4KB

        • memory/824-7-0x0000000002200000-0x0000000002201000-memory.dmp

          Filesize

          4KB

        • memory/1628-79-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/1628-82-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/1628-97-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/1628-45-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/1628-94-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/1628-90-0x00000000009D0000-0x0000000000A72000-memory.dmp

          Filesize

          648KB

        • memory/1628-48-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/1628-89-0x00000000009D0000-0x0000000000A72000-memory.dmp

          Filesize

          648KB

        • memory/1628-52-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/1628-53-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/1628-56-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/1628-59-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/1628-62-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/1628-65-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/1628-66-0x00000000009D0000-0x0000000000A72000-memory.dmp

          Filesize

          648KB

        • memory/1628-72-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/1628-75-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/1628-76-0x00000000009D0000-0x0000000000A72000-memory.dmp

          Filesize

          648KB

        • memory/1628-88-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/1628-85-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/2864-39-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/2864-38-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/2864-42-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/3404-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/3404-2-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/3404-46-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB