Analysis

  • max time kernel
    146s
  • max time network
    133s
  • 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, 13:50

General

  • Target

    ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.exe

  • Size

    2.0MB

  • MD5

    4fbc079afc0e59a9b99ef86981fa5326

  • SHA1

    06349881fcb8b34be0f79b849cf0f1289ac4d588

  • SHA256

    ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1

  • SHA512

    b9445eddab7a234504fa73cb410d9103dea4534b1e16d078fde9b11cfca45c8adb073825799ef9b53b2d1e506d634ec251cbe5f26cf7cace5168287bb3a9bcc1

  • SSDEEP

    49152:32TL+/Bjpvz7OAUZ8Dx3vEEDGBPAqfqQOmQBTTTjNIH:mTLYywV/EESFA2KBvCH

Malware Config

Extracted

Family

socks5systemz

C2

http://ddjurzz.info/search/?q=67e28dd86f58a021415baa1e7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4fe8889b5e4fa9281ae978a471ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe13c0ee9c983d

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\ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.exe
    "C:\Users\Admin\AppData\Local\Temp\ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1196
    • C:\Users\Admin\AppData\Local\Temp\is-U3P1T.tmp\ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-U3P1T.tmp\ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.tmp" /SL5="$70058,1781689,54272,C:\Users\Admin\AppData\Local\Temp\ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:4920
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -i
        3⤵
        • Executes dropped EXE
        PID:4496
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -s
        3⤵
        • Executes dropped EXE
        PID:4464

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          2.1MB

          MD5

          a8f9420959ddb2ee550f7e21644357a7

          SHA1

          4e429af917fe5e50b210c1aaa12e62a3e0c51d8f

          SHA256

          c57954dfad4f4bc99ac2fdba834e684831d0e8f1e8fb2ccc14463090739b09e7

          SHA512

          d2890847e9f98a6f8a2ff1126c9c0917b17caa1c9a9d1bf59280588f4c9b1c09b92e1520c50d0eb8721bb6fe5ef235c56ea2c2bd9640423aa884d376f082d928

        • C:\Users\Admin\AppData\Local\Temp\is-P51GM.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • C:\Users\Admin\AppData\Local\Temp\is-U3P1T.tmp\ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.tmp

          Filesize

          677KB

          MD5

          d394fc26de69f06950dc1c71959b0261

          SHA1

          7c9448fc3582f19763eaa8e3c5383b7873aee017

          SHA256

          405e474735b776fc09dc71d3a5b44c50b9e2c745cdf7e79eb89dc791866ffe2a

          SHA512

          63ef7265aac27715f5b799b588955dd5df3f49ecd0042fba69d0effe7dfe24d6777079677a809e817e4e8243a2185ca9c3a8022c9247bb2a070c213f06d7bc10

        • memory/1196-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/1196-2-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/1196-47-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4464-84-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/4464-53-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/4464-90-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/4464-87-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/4464-46-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/4464-97-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/4464-78-0x0000000000A30000-0x0000000000AD2000-memory.dmp

          Filesize

          648KB

        • memory/4464-49-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/4464-81-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/4464-94-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/4464-54-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/4464-57-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/4464-60-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/4464-63-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/4464-66-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/4464-68-0x0000000000A30000-0x0000000000AD2000-memory.dmp

          Filesize

          648KB

        • memory/4464-74-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/4464-77-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/4496-43-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/4496-38-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/4496-41-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/4496-39-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/4920-50-0x0000000002340000-0x0000000002341000-memory.dmp

          Filesize

          4KB

        • memory/4920-48-0x0000000000400000-0x00000000004B8000-memory.dmp

          Filesize

          736KB

        • memory/4920-7-0x0000000002340000-0x0000000002341000-memory.dmp

          Filesize

          4KB