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, 16:28

General

  • Target

    fb222ebb6c799f2bd4150c93a45cac3fe803d63cdb21c5eed605de253b22f088.exe

  • Size

    2.2MB

  • MD5

    63e8b616cf52885a6e08c0fa8035bba9

  • SHA1

    d1c0d63e590a28cfc44abaa90f05e6d6e8677672

  • SHA256

    fb222ebb6c799f2bd4150c93a45cac3fe803d63cdb21c5eed605de253b22f088

  • SHA512

    3daaf2a5658956b8ee69f5a087b1d4bc289b07e633d662c7a739890bd13aa80ae6111d9541c71399f223795aff86036c45057d2b11025075fd981888934a2a48

  • SSDEEP

    49152:32TsLSQNQWFvBNHiS0uO7a1n4XRApYm0hSUKvbko4tH:mQtKWF7Hr87NXRAOm02EtH

Malware Config

Extracted

Family

socks5systemz

C2

http://buhauvb.com/search/?q=67e28dd86b55fb7a410dae497c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa49e8889b5e4fa9281ae978a471ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe13c1ee969f38

http://buhauvb.com/search/?q=67e28dd86b55fb7a410dae497c27d78406abdd88be4b12eab517aa5c96bd86e891804b875a8bbc896c58e713bc90c91c36b5281fc235a925ed3e07d6bd974a95129070b616e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee94983acc6c9315

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\fb222ebb6c799f2bd4150c93a45cac3fe803d63cdb21c5eed605de253b22f088.exe
    "C:\Users\Admin\AppData\Local\Temp\fb222ebb6c799f2bd4150c93a45cac3fe803d63cdb21c5eed605de253b22f088.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1308
    • C:\Users\Admin\AppData\Local\Temp\is-0U87C.tmp\fb222ebb6c799f2bd4150c93a45cac3fe803d63cdb21c5eed605de253b22f088.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-0U87C.tmp\fb222ebb6c799f2bd4150c93a45cac3fe803d63cdb21c5eed605de253b22f088.tmp" /SL5="$50204,1993719,54272,C:\Users\Admin\AppData\Local\Temp\fb222ebb6c799f2bd4150c93a45cac3fe803d63cdb21c5eed605de253b22f088.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2596
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -i
        3⤵
        • Executes dropped EXE
        PID:2936
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -s
        3⤵
        • Executes dropped EXE
        PID:1008

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

          8e349bff47839474545f2217a5bddcc5

          SHA1

          4ac10a9dbb090a56c5139c00c81bf35eb35bf359

          SHA256

          ba225cea18c80260836604d13bcc8d9934741be009ee19fed27af92952c44c05

          SHA512

          6cf7cc4abcb7b3f3b3d15676c408dac175a2f9192ef61c7a87786f5d129e17e7be75d9b256b8c95e05b4d606a4abfbf740ac05e298fc624754baee117573a453

        • C:\Users\Admin\AppData\Local\Temp\is-0U87C.tmp\fb222ebb6c799f2bd4150c93a45cac3fe803d63cdb21c5eed605de253b22f088.tmp

          Filesize

          677KB

          MD5

          d394fc26de69f06950dc1c71959b0261

          SHA1

          7c9448fc3582f19763eaa8e3c5383b7873aee017

          SHA256

          405e474735b776fc09dc71d3a5b44c50b9e2c745cdf7e79eb89dc791866ffe2a

          SHA512

          63ef7265aac27715f5b799b588955dd5df3f49ecd0042fba69d0effe7dfe24d6777079677a809e817e4e8243a2185ca9c3a8022c9247bb2a070c213f06d7bc10

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

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • memory/1008-77-0x0000000000400000-0x0000000000640000-memory.dmp

          Filesize

          2.2MB

        • memory/1008-78-0x0000000000A10000-0x0000000000AB2000-memory.dmp

          Filesize

          648KB

        • memory/1008-99-0x0000000000400000-0x0000000000640000-memory.dmp

          Filesize

          2.2MB

        • memory/1008-96-0x0000000000400000-0x0000000000640000-memory.dmp

          Filesize

          2.2MB

        • memory/1008-92-0x0000000000A10000-0x0000000000AB2000-memory.dmp

          Filesize

          648KB

        • memory/1008-91-0x0000000000A10000-0x0000000000AB2000-memory.dmp

          Filesize

          648KB

        • memory/1008-90-0x0000000000400000-0x0000000000640000-memory.dmp

          Filesize

          2.2MB

        • memory/1008-46-0x0000000000400000-0x0000000000640000-memory.dmp

          Filesize

          2.2MB

        • memory/1008-87-0x0000000000400000-0x0000000000640000-memory.dmp

          Filesize

          2.2MB

        • memory/1008-84-0x0000000000400000-0x0000000000640000-memory.dmp

          Filesize

          2.2MB

        • memory/1008-49-0x0000000000400000-0x0000000000640000-memory.dmp

          Filesize

          2.2MB

        • memory/1008-81-0x0000000000400000-0x0000000000640000-memory.dmp

          Filesize

          2.2MB

        • memory/1008-53-0x0000000000400000-0x0000000000640000-memory.dmp

          Filesize

          2.2MB

        • memory/1008-54-0x0000000000400000-0x0000000000640000-memory.dmp

          Filesize

          2.2MB

        • memory/1008-57-0x0000000000400000-0x0000000000640000-memory.dmp

          Filesize

          2.2MB

        • memory/1008-63-0x0000000000400000-0x0000000000640000-memory.dmp

          Filesize

          2.2MB

        • memory/1008-67-0x0000000000400000-0x0000000000640000-memory.dmp

          Filesize

          2.2MB

        • memory/1008-65-0x0000000000A10000-0x0000000000AB2000-memory.dmp

          Filesize

          648KB

        • memory/1008-60-0x0000000000400000-0x0000000000640000-memory.dmp

          Filesize

          2.2MB

        • memory/1008-69-0x0000000000A10000-0x0000000000AB2000-memory.dmp

          Filesize

          648KB

        • memory/1008-74-0x0000000000400000-0x0000000000640000-memory.dmp

          Filesize

          2.2MB

        • memory/1308-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/1308-47-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/1308-2-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/2596-7-0x0000000002310000-0x0000000002311000-memory.dmp

          Filesize

          4KB

        • memory/2596-50-0x0000000002310000-0x0000000002311000-memory.dmp

          Filesize

          4KB

        • memory/2596-48-0x0000000000400000-0x00000000004B8000-memory.dmp

          Filesize

          736KB

        • memory/2936-42-0x0000000000400000-0x0000000000640000-memory.dmp

          Filesize

          2.2MB

        • memory/2936-43-0x0000000000400000-0x0000000000640000-memory.dmp

          Filesize

          2.2MB

        • memory/2936-38-0x0000000000400000-0x0000000000640000-memory.dmp

          Filesize

          2.2MB

        • memory/2936-39-0x0000000000400000-0x0000000000640000-memory.dmp

          Filesize

          2.2MB