Analysis

  • max time kernel
    149s
  • max time network
    148s
  • 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, 16:01

General

  • Target

    a43170914d691e584583b0e1023f7d29.exe

  • Size

    2.2MB

  • MD5

    a43170914d691e584583b0e1023f7d29

  • SHA1

    2a814e366e3d6eb503f0eb398496f7e01470d6d2

  • SHA256

    25d5acd334f0d498f7cfef39cfb04259b6f1c0bc066b39bb4f1da85a4a4388c3

  • SHA512

    de188e27905264204e5371fc92b512b4053fe7dc6b05e5659ca93d47a5f986ece802352e14f41488dc2bc01b95876619186a90b4f7009509c1f0d4fa76ecded9

  • SSDEEP

    49152:3260I7BCcfemAVm2VrO5jTzyXyOBuY7hIqrmmA/VzmgH:m6lCcfDAxOlTeXRR7hIqrUV1H

Malware Config

Extracted

Family

socks5systemz

C2

http://bfxkvgm.com/search/?q=67e28dd83a5da32a155afd1b7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a271ea771795af8e05c642db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ffe13c0e6929f3b

Signatures

  • Detect Socks5Systemz Payload 2 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\a43170914d691e584583b0e1023f7d29.exe
    "C:\Users\Admin\AppData\Local\Temp\a43170914d691e584583b0e1023f7d29.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:456
    • C:\Users\Admin\AppData\Local\Temp\is-9A0LE.tmp\a43170914d691e584583b0e1023f7d29.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-9A0LE.tmp\a43170914d691e584583b0e1023f7d29.tmp" /SL5="$501D2,1970008,54272,C:\Users\Admin\AppData\Local\Temp\a43170914d691e584583b0e1023f7d29.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:4816
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -i
        3⤵
        • Executes dropped EXE
        PID:2324
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -s
        3⤵
        • Executes dropped EXE
        PID:3392
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4584 --field-trial-handle=2272,i,4858140932023865871,5726683989663339295,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:3216

    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

            ca07d355c80b303ac9edbf3d9b5492f3

            SHA1

            f09e8e52c3bb53e20f1623321ef2e0da693ebe85

            SHA256

            d144face050d52cf3beba96a24ff6bc79f01a621ee19801dbea49079fee42da8

            SHA512

            8961bc69e102623303d9cd943b9f2df32d8597958a0e3e51a41a84421de1c8037fd9a5e32f86a429f4ec551fcdd9a9b8d1b034a2644d3031abf8b1b5c9e5efdc

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

            Filesize

            1.5MB

            MD5

            511482177f3a6d0a0b00589a703f3496

            SHA1

            8c697322ae4428e7eb5f576eb1fc7f8632e94658

            SHA256

            33b715a17806b790fadce6dca4c85a0421031e6e4aa19ee671d71c8e4ea2444f

            SHA512

            dd25ec70b745d7850dd0e262e5e684ea8e3e818d042793cb9944fbc13c56ced0863793461189fa2e4753144bd657ab42cfd2511b039c967e409d344a6a09929d

          • C:\Users\Admin\AppData\Local\Temp\is-3V7SE.tmp\_isetup\_iscrypt.dll

            Filesize

            2KB

            MD5

            a69559718ab506675e907fe49deb71e9

            SHA1

            bc8f404ffdb1960b50c12ff9413c893b56f2e36f

            SHA256

            2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

            SHA512

            e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

          • C:\Users\Admin\AppData\Local\Temp\is-9A0LE.tmp\a43170914d691e584583b0e1023f7d29.tmp

            Filesize

            677KB

            MD5

            d394fc26de69f06950dc1c71959b0261

            SHA1

            7c9448fc3582f19763eaa8e3c5383b7873aee017

            SHA256

            405e474735b776fc09dc71d3a5b44c50b9e2c745cdf7e79eb89dc791866ffe2a

            SHA512

            63ef7265aac27715f5b799b588955dd5df3f49ecd0042fba69d0effe7dfe24d6777079677a809e817e4e8243a2185ca9c3a8022c9247bb2a070c213f06d7bc10

          • memory/456-2-0x0000000000400000-0x0000000000414000-memory.dmp

            Filesize

            80KB

          • memory/456-0-0x0000000000400000-0x0000000000414000-memory.dmp

            Filesize

            80KB

          • memory/456-17-0x0000000000400000-0x0000000000414000-memory.dmp

            Filesize

            80KB

          • memory/2324-39-0x0000000000400000-0x0000000000641000-memory.dmp

            Filesize

            2.3MB

          • memory/2324-40-0x0000000000400000-0x0000000000641000-memory.dmp

            Filesize

            2.3MB

          • memory/2324-43-0x0000000000400000-0x0000000000641000-memory.dmp

            Filesize

            2.3MB

          • memory/2324-44-0x0000000000400000-0x0000000000641000-memory.dmp

            Filesize

            2.3MB

          • memory/3392-75-0x0000000000400000-0x0000000000641000-memory.dmp

            Filesize

            2.3MB

          • memory/3392-68-0x0000000000400000-0x0000000000641000-memory.dmp

            Filesize

            2.3MB

          • memory/3392-48-0x0000000000400000-0x0000000000641000-memory.dmp

            Filesize

            2.3MB

          • memory/3392-96-0x0000000000400000-0x0000000000641000-memory.dmp

            Filesize

            2.3MB

          • memory/3392-51-0x0000000000400000-0x0000000000641000-memory.dmp

            Filesize

            2.3MB

          • memory/3392-91-0x0000000000400000-0x0000000000641000-memory.dmp

            Filesize

            2.3MB

          • memory/3392-55-0x0000000000400000-0x0000000000641000-memory.dmp

            Filesize

            2.3MB

          • memory/3392-56-0x0000000000400000-0x0000000000641000-memory.dmp

            Filesize

            2.3MB

          • memory/3392-59-0x0000000000400000-0x0000000000641000-memory.dmp

            Filesize

            2.3MB

          • memory/3392-62-0x0000000000400000-0x0000000000641000-memory.dmp

            Filesize

            2.3MB

          • memory/3392-65-0x0000000000400000-0x0000000000641000-memory.dmp

            Filesize

            2.3MB

          • memory/3392-47-0x0000000000400000-0x0000000000641000-memory.dmp

            Filesize

            2.3MB

          • memory/3392-69-0x0000000000830000-0x00000000008D2000-memory.dmp

            Filesize

            648KB

          • memory/3392-88-0x0000000000400000-0x0000000000641000-memory.dmp

            Filesize

            2.3MB

          • memory/3392-78-0x0000000000400000-0x0000000000641000-memory.dmp

            Filesize

            2.3MB

          • memory/3392-80-0x0000000000830000-0x00000000008D2000-memory.dmp

            Filesize

            648KB

          • memory/3392-82-0x0000000000400000-0x0000000000641000-memory.dmp

            Filesize

            2.3MB

          • memory/3392-85-0x0000000000400000-0x0000000000641000-memory.dmp

            Filesize

            2.3MB

          • memory/4816-7-0x0000000002240000-0x0000000002241000-memory.dmp

            Filesize

            4KB

          • memory/4816-52-0x0000000002240000-0x0000000002241000-memory.dmp

            Filesize

            4KB

          • memory/4816-49-0x0000000000400000-0x00000000004B8000-memory.dmp

            Filesize

            736KB