Analysis

  • max time kernel
    141s
  • max time network
    129s
  • 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, 15:57

General

  • Target

    e35e5a2f248207f596081c1ee86b1f43510b4c2b99182fbdcce1bad4fecdbf37.exe

  • Size

    2.0MB

  • MD5

    3d69d0f183518f36e7628dad4228969b

  • SHA1

    8e29d3483612c64ac49989bcefc29d4432ac4a16

  • SHA256

    e35e5a2f248207f596081c1ee86b1f43510b4c2b99182fbdcce1bad4fecdbf37

  • SHA512

    7e14a32c0906235dbc0eb7f557578b90d075be958a08aaa20c3d778b32bf2b9755d6f3b14b0f69d5508c402668f1a53f64db96b99998f3dbf0805abbaa783050

  • SSDEEP

    49152:32N77AwDGmCur+DkEGhMFrVT5mWpAqp5gWTbuL4uH:mN70i4kFyxBpxp5gmbuL4uH

Malware Config

Extracted

Family

socks5systemz

C2

http://beyrmbd.com/search/?q=67e28dd86b55fb7a410dae497c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa49e8889b5e4fa9281ae978a471ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe13c0e6919332

http://beyrmbd.com/search/?q=67e28dd86b55fb7a410dae497c27d78406abdd88be4b12eab517aa5c96bd86e891804b875a8bbc896c58e713bc90c91c36b5281fc235a925ed3e07d6bd974a95129070b616e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee94983bc46b9f1f

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\e35e5a2f248207f596081c1ee86b1f43510b4c2b99182fbdcce1bad4fecdbf37.exe
    "C:\Users\Admin\AppData\Local\Temp\e35e5a2f248207f596081c1ee86b1f43510b4c2b99182fbdcce1bad4fecdbf37.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4696
    • C:\Users\Admin\AppData\Local\Temp\is-L1DKF.tmp\e35e5a2f248207f596081c1ee86b1f43510b4c2b99182fbdcce1bad4fecdbf37.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-L1DKF.tmp\e35e5a2f248207f596081c1ee86b1f43510b4c2b99182fbdcce1bad4fecdbf37.tmp" /SL5="$40232,1752228,54272,C:\Users\Admin\AppData\Local\Temp\e35e5a2f248207f596081c1ee86b1f43510b4c2b99182fbdcce1bad4fecdbf37.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:4152
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -i
        3⤵
        • Executes dropped EXE
        PID:1532
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -s
        3⤵
        • Executes dropped EXE
        PID:3484

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

          4947e172190fce2d6615b694ce283c75

          SHA1

          f0bed6c45ecdbf4be14cffd527d232dae7784c5e

          SHA256

          43315292e09019cd31c640577d5fee46cf6e5869bbe40ce2a83f32c58ec8e2d2

          SHA512

          0b8a9bc70c38ae62d7a8c3779d30addd12cf026190a72f17760e2ae20f509ecb8aa3fb4637b470fa6f0b862384f28188e43b2531705c265c0f402c21739b7f10

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

          Filesize

          1.8MB

          MD5

          0a9e55faf8d8135b696e3a5e354e06e4

          SHA1

          dbb4337aa890f192c55e75581c99496532c6e3fe

          SHA256

          f6bd018ff4541564d7e99e9cd5cc471276324b31a6b3794a8199369ba922f30c

          SHA512

          e31a5cd781dd073ac34c33c4c3957248b9e5ba12dab1de6c09ce3f782af06d4d1c13774b1f557b801309d045c90ab22d95f2bbe3e512cb8ee9b7261771440f89

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

          Filesize

          1.6MB

          MD5

          6f1fbce5870a00b11c3108063840a83a

          SHA1

          5a7d7f698fd52d12454be461964a84483b56e26d

          SHA256

          299580f3a84f7de0e9538829234c5ee860e00f2d825b4b1c09400871839d3eab

          SHA512

          f840217895d421d092ff993c635744a4d7867b76755a27c761324b977c640ccf64644b35d7eef16e6bd8629c7ab188282dbc4941270883d73b6f08dbabfff6b8

        • C:\Users\Admin\AppData\Local\Temp\is-1K1NK.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • C:\Users\Admin\AppData\Local\Temp\is-L1DKF.tmp\e35e5a2f248207f596081c1ee86b1f43510b4c2b99182fbdcce1bad4fecdbf37.tmp

          Filesize

          677KB

          MD5

          d394fc26de69f06950dc1c71959b0261

          SHA1

          7c9448fc3582f19763eaa8e3c5383b7873aee017

          SHA256

          405e474735b776fc09dc71d3a5b44c50b9e2c745cdf7e79eb89dc791866ffe2a

          SHA512

          63ef7265aac27715f5b799b588955dd5df3f49ecd0042fba69d0effe7dfe24d6777079677a809e817e4e8243a2185ca9c3a8022c9247bb2a070c213f06d7bc10

        • memory/1532-51-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/1532-38-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/1532-37-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/1532-41-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/1532-42-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3484-54-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3484-82-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3484-46-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3484-100-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3484-97-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3484-49-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3484-93-0x0000000000990000-0x0000000000A32000-memory.dmp

          Filesize

          648KB

        • memory/3484-92-0x0000000000990000-0x0000000000A32000-memory.dmp

          Filesize

          648KB

        • memory/3484-91-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3484-55-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3484-58-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3484-61-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3484-64-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3484-66-0x0000000000990000-0x0000000000A32000-memory.dmp

          Filesize

          648KB

        • memory/3484-68-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3484-70-0x0000000000990000-0x0000000000A32000-memory.dmp

          Filesize

          648KB

        • memory/3484-75-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3484-78-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3484-79-0x0000000000990000-0x0000000000A32000-memory.dmp

          Filesize

          648KB

        • memory/3484-45-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3484-85-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3484-88-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/4152-6-0x0000000002340000-0x0000000002341000-memory.dmp

          Filesize

          4KB

        • memory/4152-50-0x0000000002340000-0x0000000002341000-memory.dmp

          Filesize

          4KB

        • memory/4152-48-0x0000000000400000-0x00000000004B8000-memory.dmp

          Filesize

          736KB

        • memory/4696-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4696-47-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB