Analysis

  • max time kernel
    145s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240319-en
  • resource tags

    arch:x64arch:x86image:win11-20240319-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    24/03/2024, 15:24

General

  • Target

    b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.exe

  • Size

    2.0MB

  • MD5

    1881c97656dcb5b8bd49adb319670843

  • SHA1

    3cd15e163ff80fecea80380ebed4cb86528fbd1f

  • SHA256

    b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935

  • SHA512

    4cb9ffbb2546bb4d3f3fb07dd4c704a51e9515d7d2d1d71a6caf2a523643be46a6a4473d0113923ce546deb9870bdc149a12159755051ada89d3e32d0c483642

  • SSDEEP

    49152:32UpWMZfDCqihgpMC5uOpTrpNIQFFFFYYS99I:mYZ+PUwCrvVbFFY7jI

Malware Config

Extracted

Family

socks5systemz

C2

http://ayzahmh.ru/search/?q=67e28dd83e58f128495cab1c7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a471ea771795af8e05c642db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe13c9ec9c9c3d

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\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.exe
    "C:\Users\Admin\AppData\Local\Temp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2836
    • C:\Users\Admin\AppData\Local\Temp\is-VHI0D.tmp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-VHI0D.tmp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.tmp" /SL5="$800DA,1783347,54272,C:\Users\Admin\AppData\Local\Temp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:5104
      • C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
        "C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe" -i
        3⤵
        • Executes dropped EXE
        PID:5804
      • C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
        "C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe" -s
        3⤵
        • Executes dropped EXE
        PID:580

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe

          Filesize

          2.0MB

          MD5

          451dcf0ec2e3f43096883f662fa92b86

          SHA1

          149723d39f6e3fa23adea52420f415d1b7725e8f

          SHA256

          d9bcebd225e9abe2cf9eaa0479997e756eeab2b607cc14be27e562e08887b021

          SHA512

          a6f0d7e342b78f2025c859fb9d0e0e0887edcb6f8d086c8206b8974f91a5374cc3045dfb9876e4c4fcf64da75d37fd6b822318caf4f9ecb7d15f391f6c973c87

        • C:\Users\Admin\AppData\Local\Temp\is-4COPS.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • C:\Users\Admin\AppData\Local\Temp\is-VHI0D.tmp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.tmp

          Filesize

          677KB

          MD5

          5a1e3d46cb5a24f8e50b2a59d2ba1cf3

          SHA1

          fe86894c4757c144449bc744649b7fb9e03346f1

          SHA256

          d3a2c2ce7d70b3b9c30faf3f72bf4ebcdea8f331d6b6cac5dae906327997985d

          SHA512

          a27dc5c443abb31826b14e514aa717be5bf0f548b82170f79705f45ca28abaedc485c5b8738044735f61eca9e1f0ca659b519a3947551404085d07202ae709af

        • memory/580-77-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/580-67-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/580-97-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/580-94-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/580-90-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/580-87-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/580-84-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/580-45-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/580-47-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/580-81-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/580-78-0x0000000002330000-0x00000000023D2000-memory.dmp

          Filesize

          648KB

        • memory/580-50-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/580-74-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/580-54-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/580-58-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/580-61-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/580-55-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/580-64-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/580-68-0x0000000002330000-0x00000000023D2000-memory.dmp

          Filesize

          648KB

        • memory/2836-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/2836-48-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/2836-2-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/5104-7-0x0000000002340000-0x0000000002341000-memory.dmp

          Filesize

          4KB

        • memory/5104-51-0x0000000002340000-0x0000000002341000-memory.dmp

          Filesize

          4KB

        • memory/5104-49-0x0000000000400000-0x00000000004B8000-memory.dmp

          Filesize

          736KB

        • memory/5804-43-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/5804-42-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/5804-39-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/5804-38-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB