Analysis

  • max time kernel
    141s
  • max time network
    126s
  • 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, 17:19

General

  • Target

    69361a92cd9421f08dcc2ca90ebe17e4ec2a261491d0fd2d22c801a764d2b58c.exe

  • Size

    2.0MB

  • MD5

    8d1d005a951e83b713c55d9742197814

  • SHA1

    9b725b293cae35da4073d0a5a4f6a2b59f0e2d6c

  • SHA256

    69361a92cd9421f08dcc2ca90ebe17e4ec2a261491d0fd2d22c801a764d2b58c

  • SHA512

    acf5e64caedc62fe9020cc104c0454b1933984c71b1733a2be1ff458a3eefe9cf7b4401a56cbecd45bd72544f1d1e03d3aa376b259c7bf92aede02442c0dd95c

  • SSDEEP

    49152:32OL6WRiIlaLhyQJTpWm/l7xGgASdt49CDQidXL11:mOL1+LhvTpWm/b86dQilLj

Malware Config

Extracted

Family

socks5systemz

C2

http://bmbibiz.com/search/?q=67e28dd8645af52e420aad1d7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ee8889b5e4fa9281ae978a371ea771795af8e05c642db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe13c1eb91983e

Signatures

  • Detect Socks5Systemz Payload 3 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\69361a92cd9421f08dcc2ca90ebe17e4ec2a261491d0fd2d22c801a764d2b58c.exe
    "C:\Users\Admin\AppData\Local\Temp\69361a92cd9421f08dcc2ca90ebe17e4ec2a261491d0fd2d22c801a764d2b58c.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3900
    • C:\Users\Admin\AppData\Local\Temp\is-SEIQR.tmp\69361a92cd9421f08dcc2ca90ebe17e4ec2a261491d0fd2d22c801a764d2b58c.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-SEIQR.tmp\69361a92cd9421f08dcc2ca90ebe17e4ec2a261491d0fd2d22c801a764d2b58c.tmp" /SL5="$800D6,1735427,54272,C:\Users\Admin\AppData\Local\Temp\69361a92cd9421f08dcc2ca90ebe17e4ec2a261491d0fd2d22c801a764d2b58c.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:3224
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -i
        3⤵
        • Executes dropped EXE
        PID:1008
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -s
        3⤵
        • Executes dropped EXE
        PID:1476

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          960KB

          MD5

          a8d5e1e05eaacca95e6f61f56437d31a

          SHA1

          34f2132ada2086d2bee1d33b3f99529ba1d036b9

          SHA256

          a4ba2546f4616354dadf428ad7623ce3447c587794ab573865f9e0474712edf8

          SHA512

          1e13c62442f33ca5895a82a204a87440b66141945298eec950e8732ae7db7000e44bf25ff83da458fbcb21ea8b547118a6a60b0547328e5f45ad0bfcc17d2751

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

          Filesize

          2.1MB

          MD5

          a44885994053e2bd4c5a71cfdff9c1e4

          SHA1

          6ecf41f4e26cc82b1e8ba60669f236b19d7021aa

          SHA256

          72848f23f999566824252b8d75ec5aa70df8bfd4bdaeb5a4b80ea3dd6ad6de7d

          SHA512

          5a733ad487a6db3e59a5fe848da9bd8a8ff2eac172dea293715b4939cf0c55a50e3beb2e3e6f9b643602ff43f1b59dbafc5cbced8a4eaf8e4c1f307ec869662f

        • C:\Users\Admin\AppData\Local\Temp\is-PV728.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • C:\Users\Admin\AppData\Local\Temp\is-SEIQR.tmp\69361a92cd9421f08dcc2ca90ebe17e4ec2a261491d0fd2d22c801a764d2b58c.tmp

          Filesize

          677KB

          MD5

          0f880dcf813dfae46e94e0fd721c3e2a

          SHA1

          f5faad2d2a72412682461ebfaa82e6ed2a1f5db0

          SHA256

          4cacfd4b9ca43a9396f2c50ccfe1f01d4f8215a26258b00b6e7ea2051d1c6e75

          SHA512

          4c826809562cb9f7c63c008c44592fb47f53f5a5ca99f15f7bbe59a9776514472da8bb469fdf933dfe52f22e52b77689d460afef1b40c779e867d7bd4f3a7f38

        • memory/1008-39-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/1008-43-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/1008-38-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/1008-40-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/1476-70-0x00000000009A0000-0x0000000000A42000-memory.dmp

          Filesize

          648KB

        • memory/1476-64-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/1476-98-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/1476-46-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/1476-47-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/1476-95-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/1476-91-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/1476-50-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/1476-88-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/1476-52-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/1476-55-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/1476-58-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/1476-61-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/1476-85-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/1476-65-0x00000000009A0000-0x0000000000A42000-memory.dmp

          Filesize

          648KB

        • memory/1476-69-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/1476-82-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/1476-75-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/1476-78-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/1476-79-0x00000000009A0000-0x0000000000A42000-memory.dmp

          Filesize

          648KB

        • memory/3224-7-0x0000000002450000-0x0000000002451000-memory.dmp

          Filesize

          4KB

        • memory/3224-51-0x0000000002450000-0x0000000002451000-memory.dmp

          Filesize

          4KB

        • memory/3224-49-0x0000000000400000-0x00000000004B8000-memory.dmp

          Filesize

          736KB

        • memory/3900-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/3900-48-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/3900-2-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB