Analysis

  • max time kernel
    147s
  • 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, 16:34

General

  • Target

    37e9181fda347881a9648496c62b1a970ce2055245db4d936cc8ddf1a20eef81.exe

  • Size

    2.0MB

  • MD5

    2f2b5ff3c33c62109f96e65c1d7601b0

  • SHA1

    aa8cfcbacc165b941199a9d56045933af952f995

  • SHA256

    37e9181fda347881a9648496c62b1a970ce2055245db4d936cc8ddf1a20eef81

  • SHA512

    ce770de242104f4f2fe702724f684ee59973cea11e257d997c18eb9f04487b0a6be9843c7b53070243cc2f1dee2a0e540cf1e379b6548cf40cab74a6fbc967ea

  • SSDEEP

    49152:32m/hFz6e3Bw45KMgwkYfyZYOgzynV0NWp6V/VtqkOVH:mobVwpooYQKcpGahH

Malware Config

Extracted

Family

socks5systemz

C2

http://bxyszls.com/search/?q=67e28dd86b55fb7a410dae497c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa49e8889b5e4fa9281ae978a471ea771795af8e05c642db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe13c1ee929938

http://bxyszls.com/search/?q=67e28dd86b55fb7a410dae497c27d78406abdd88be4b12eab517aa5c96bd86e891804b875a8bbc896c58e713bc90c91c36b5281fc235a925ed3e07d6bd974a95129070b611e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee94983acc689515

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\37e9181fda347881a9648496c62b1a970ce2055245db4d936cc8ddf1a20eef81.exe
    "C:\Users\Admin\AppData\Local\Temp\37e9181fda347881a9648496c62b1a970ce2055245db4d936cc8ddf1a20eef81.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2320
    • C:\Users\Admin\AppData\Local\Temp\is-9VQMF.tmp\37e9181fda347881a9648496c62b1a970ce2055245db4d936cc8ddf1a20eef81.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-9VQMF.tmp\37e9181fda347881a9648496c62b1a970ce2055245db4d936cc8ddf1a20eef81.tmp" /SL5="$6023C,1752368,54272,C:\Users\Admin\AppData\Local\Temp\37e9181fda347881a9648496c62b1a970ce2055245db4d936cc8ddf1a20eef81.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2396
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -i
        3⤵
        • Executes dropped EXE
        PID:3240
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -s
        3⤵
        • Executes dropped EXE
        PID:948

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

          c963718dcfbf0c912a40a46bafcbe6f1

          SHA1

          8633310a8cc797a59a63d8fd54456893402296f8

          SHA256

          9cc03473e79df79135bfad64f51cc2ab03eeba069494045a91ddf0d2745345f6

          SHA512

          f9191caf21877ed861ad09019abf50c591ad5bcb2a478e4518e3e7aa64af73373d46c81e8829e80ac8be78be47d4ea83ff1e420e59297d1cff1718c37ca35c65

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

          Filesize

          1024KB

          MD5

          527b8f06d6527ae5d62b4cb562b11508

          SHA1

          534c14bb3eb12e148a89c26c4b01bc07bb5093b9

          SHA256

          0c7b1da7c541bd425c204529c4647cfa0acd671759b3e5a02f62b5918f541746

          SHA512

          6f2459004a4da877159f4d473626426625908ce9c60f0a0eba2814b3de6632c01d2250902ec78880fba45eadddc0e299a5fab8a85bcf192bebc6630294cc1a28

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

          Filesize

          1.1MB

          MD5

          097bda7cd7aaccd478c721fedefd0a73

          SHA1

          a8cddf16fac8a777256e8cdb48bbed6fe06d936a

          SHA256

          6063036eb4dcf8c518176c9bda36a8f7b8f4fa0e71031c5d4d6fbe6df125bde1

          SHA512

          edd4e3fd7f71db1d75b260f043580082ba85d4bf676b626aff679c9a256bf2e353e2f609c0b351a331f6fba2187249bf9d4c111e20e538c996c1b022850b60fe

        • C:\Users\Admin\AppData\Local\Temp\is-7GETS.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • C:\Users\Admin\AppData\Local\Temp\is-9VQMF.tmp\37e9181fda347881a9648496c62b1a970ce2055245db4d936cc8ddf1a20eef81.tmp

          Filesize

          677KB

          MD5

          d394fc26de69f06950dc1c71959b0261

          SHA1

          7c9448fc3582f19763eaa8e3c5383b7873aee017

          SHA256

          405e474735b776fc09dc71d3a5b44c50b9e2c745cdf7e79eb89dc791866ffe2a

          SHA512

          63ef7265aac27715f5b799b588955dd5df3f49ecd0042fba69d0effe7dfe24d6777079677a809e817e4e8243a2185ca9c3a8022c9247bb2a070c213f06d7bc10

        • memory/948-54-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/948-58-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/948-100-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/948-97-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/948-93-0x00000000009F0000-0x0000000000A92000-memory.dmp

          Filesize

          648KB

        • memory/948-92-0x00000000009F0000-0x0000000000A92000-memory.dmp

          Filesize

          648KB

        • memory/948-91-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/948-45-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/948-47-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/948-88-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/948-85-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/948-50-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/948-82-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/948-79-0x00000000009F0000-0x0000000000A92000-memory.dmp

          Filesize

          648KB

        • memory/948-55-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/948-78-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/948-61-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/948-64-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/948-66-0x00000000009F0000-0x0000000000A92000-memory.dmp

          Filesize

          648KB

        • memory/948-68-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/948-70-0x00000000009F0000-0x0000000000A92000-memory.dmp

          Filesize

          648KB

        • memory/948-75-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/2320-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/2320-48-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/2320-2-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/2396-51-0x0000000002340000-0x0000000002341000-memory.dmp

          Filesize

          4KB

        • memory/2396-49-0x0000000000400000-0x00000000004B8000-memory.dmp

          Filesize

          736KB

        • memory/2396-7-0x0000000002340000-0x0000000002341000-memory.dmp

          Filesize

          4KB

        • memory/3240-39-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3240-43-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3240-40-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3240-38-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB