Analysis

  • max time kernel
    150s
  • max time network
    155s
  • 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, 13:19

General

  • Target

    cf2c71d279310105bce28d8ca6f90a42733da306d07e2c13acaa1cc90ff8b8be.exe

  • Size

    2.0MB

  • MD5

    acb4ff970a6f5a421f388d8db9ef27a5

  • SHA1

    d66686a615df8a8a6f8f36400c13fdc9f55dbb0c

  • SHA256

    cf2c71d279310105bce28d8ca6f90a42733da306d07e2c13acaa1cc90ff8b8be

  • SHA512

    2ab6226fc9ce4cea1376692377483642d5a9e83f0e2becf3ca5d81116b3bb8b62263a9c38521de9b79c4921718885a09070ef6e2d21ed2f2cb253a1e1f482bca

  • SSDEEP

    49152:32SwGJoA887GzJVZ3qTC4SdEdosi9psTJiP9Pe7D:m9A887cJn3oCnEmsisTYc

Malware Config

Extracted

Family

socks5systemz

C2

http://dtwbete.info/search/?q=67e28dd83e0ff228160df91f7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978f571ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe13c0ef95983b

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\cf2c71d279310105bce28d8ca6f90a42733da306d07e2c13acaa1cc90ff8b8be.exe
    "C:\Users\Admin\AppData\Local\Temp\cf2c71d279310105bce28d8ca6f90a42733da306d07e2c13acaa1cc90ff8b8be.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3284
    • C:\Users\Admin\AppData\Local\Temp\is-4I7QM.tmp\cf2c71d279310105bce28d8ca6f90a42733da306d07e2c13acaa1cc90ff8b8be.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-4I7QM.tmp\cf2c71d279310105bce28d8ca6f90a42733da306d07e2c13acaa1cc90ff8b8be.tmp" /SL5="$1101EE,1756126,54272,C:\Users\Admin\AppData\Local\Temp\cf2c71d279310105bce28d8ca6f90a42733da306d07e2c13acaa1cc90ff8b8be.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:4136
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -i
        3⤵
        • Executes dropped EXE
        PID:900
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -s
        3⤵
        • Executes dropped EXE
        PID:3200

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          2.0MB

          MD5

          c79648f3750d1cefcdb36833c743d263

          SHA1

          894203940c5346ae015be20e017dee9b409ddaf5

          SHA256

          89af231d1c627b6bede896ef3eb73d8bc48e4a9e37accb71b7f6723a3fe5953b

          SHA512

          052ca6068b18f2d7fcdedcfe01021ce480987c8bf09cda91abb719c9647314c276380563ab1b3fba9cf635499e17eed26c75b7c80bdd59f2ca2c7626c3dd9cf8

        • C:\Users\Admin\AppData\Local\Temp\is-4I7QM.tmp\cf2c71d279310105bce28d8ca6f90a42733da306d07e2c13acaa1cc90ff8b8be.tmp

          Filesize

          677KB

          MD5

          92f7775908bb12183914bb0753782913

          SHA1

          8d1091da36832942d48f2fe9a1a216fdd556b9c4

          SHA256

          a43c4e3916a92d299c22e2010383b2a8f85e14882a610de57bb2fef91f7984ed

          SHA512

          7e39cafdc00a46f2353f6eeaa8fee0d7c94f489d1fd4581e125408bae63a2e6cd135f65807c3574c833f970b64106badb7dd0a2a6ee9859b3b60b3d1b6e19c39

        • C:\Users\Admin\AppData\Local\Temp\is-ELG58.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • memory/900-37-0x0000000000400000-0x0000000000608000-memory.dmp

          Filesize

          2.0MB

        • memory/900-41-0x0000000000400000-0x0000000000608000-memory.dmp

          Filesize

          2.0MB

        • memory/900-38-0x0000000000400000-0x0000000000608000-memory.dmp

          Filesize

          2.0MB

        • memory/3200-52-0x0000000000400000-0x0000000000608000-memory.dmp

          Filesize

          2.0MB

        • memory/3200-75-0x00000000008F0000-0x0000000000992000-memory.dmp

          Filesize

          648KB

        • memory/3200-44-0x0000000000400000-0x0000000000608000-memory.dmp

          Filesize

          2.0MB

        • memory/3200-94-0x0000000000400000-0x0000000000608000-memory.dmp

          Filesize

          2.0MB

        • memory/3200-91-0x0000000000400000-0x0000000000608000-memory.dmp

          Filesize

          2.0MB

        • memory/3200-47-0x0000000000400000-0x0000000000608000-memory.dmp

          Filesize

          2.0MB

        • memory/3200-87-0x0000000000400000-0x0000000000608000-memory.dmp

          Filesize

          2.0MB

        • memory/3200-51-0x0000000000400000-0x0000000000608000-memory.dmp

          Filesize

          2.0MB

        • memory/3200-84-0x0000000000400000-0x0000000000608000-memory.dmp

          Filesize

          2.0MB

        • memory/3200-55-0x0000000000400000-0x0000000000608000-memory.dmp

          Filesize

          2.0MB

        • memory/3200-58-0x0000000000400000-0x0000000000608000-memory.dmp

          Filesize

          2.0MB

        • memory/3200-61-0x0000000000400000-0x0000000000608000-memory.dmp

          Filesize

          2.0MB

        • memory/3200-64-0x00000000008F0000-0x0000000000992000-memory.dmp

          Filesize

          648KB

        • memory/3200-65-0x0000000000400000-0x0000000000608000-memory.dmp

          Filesize

          2.0MB

        • memory/3200-71-0x0000000000400000-0x0000000000608000-memory.dmp

          Filesize

          2.0MB

        • memory/3200-74-0x0000000000400000-0x0000000000608000-memory.dmp

          Filesize

          2.0MB

        • memory/3200-81-0x0000000000400000-0x0000000000608000-memory.dmp

          Filesize

          2.0MB

        • memory/3200-78-0x0000000000400000-0x0000000000608000-memory.dmp

          Filesize

          2.0MB

        • memory/3284-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/3284-45-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4136-6-0x0000000002340000-0x0000000002341000-memory.dmp

          Filesize

          4KB

        • memory/4136-48-0x0000000002340000-0x0000000002341000-memory.dmp

          Filesize

          4KB

        • memory/4136-46-0x0000000000400000-0x00000000004B8000-memory.dmp

          Filesize

          736KB