Analysis

  • max time kernel
    141s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-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://diezfcn.info/search/?q=67e28dd86e0bf32a420fa9187c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4de8889b5e4fa9281ae978a071ea771795af8e05c642db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ffe13c9ec9c9c3b

http://diezfcn.info/search/?q=67e28dd86e0bf32a420fa9187c27d78406abdd88be4b12eab517aa5c96bd86ee9c864c805a8bbc896c58e713bc90c91836b5281fc235a925ed3e03d6bd974a95129070b611e96cc92be510b866db52b2e34aec4c2b14a82966836f23d7f210c7ee949832ce669016

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\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.exe
    "C:\Users\Admin\AppData\Local\Temp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4804
    • C:\Users\Admin\AppData\Local\Temp\is-ABBQF.tmp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-ABBQF.tmp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.tmp" /SL5="$501F0,1783347,54272,C:\Users\Admin\AppData\Local\Temp\b828f827c6a16bd3c021fccb39d6da6225cf7f7ae901226caea8e1ccda3b2935.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2252
      • 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:4440
      • 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:3556

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\Site Free Edition\sitefreeedition.exe

          Filesize

          768KB

          MD5

          8d273d5a5022f2973d52f8f73ca46e03

          SHA1

          44e5a8d7519c176031803a93e9a0c73507bcf681

          SHA256

          c98c8d4339e25b014dcef1707d7c7ef4451ad6c4747ea195c793f7f58daa1b11

          SHA512

          bf317cceaaef59904309fd92a8221236ba250461739d844d562e9f484595ab3070593ef9e2dacc06db566cefbca7bc7c78c0c9a244fcffefb9c56cd527b4d4de

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

          Filesize

          677KB

          MD5

          5a1e3d46cb5a24f8e50b2a59d2ba1cf3

          SHA1

          fe86894c4757c144449bc744649b7fb9e03346f1

          SHA256

          d3a2c2ce7d70b3b9c30faf3f72bf4ebcdea8f331d6b6cac5dae906327997985d

          SHA512

          a27dc5c443abb31826b14e514aa717be5bf0f548b82170f79705f45ca28abaedc485c5b8738044735f61eca9e1f0ca659b519a3947551404085d07202ae709af

        • C:\Users\Admin\AppData\Local\Temp\is-M23TD.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • memory/2252-51-0x0000000000680000-0x0000000000681000-memory.dmp

          Filesize

          4KB

        • memory/2252-7-0x0000000000680000-0x0000000000681000-memory.dmp

          Filesize

          4KB

        • memory/2252-49-0x0000000000400000-0x00000000004B8000-memory.dmp

          Filesize

          736KB

        • memory/3556-79-0x0000000000800000-0x00000000008A2000-memory.dmp

          Filesize

          648KB

        • memory/3556-67-0x0000000000800000-0x00000000008A2000-memory.dmp

          Filesize

          648KB

        • memory/3556-100-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/3556-97-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/3556-46-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/3556-47-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/3556-93-0x0000000000800000-0x00000000008A2000-memory.dmp

          Filesize

          648KB

        • memory/3556-92-0x0000000000800000-0x00000000008A2000-memory.dmp

          Filesize

          648KB

        • memory/3556-50-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/3556-91-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/3556-54-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/3556-55-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/3556-58-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/3556-61-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/3556-64-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/3556-88-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/3556-68-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/3556-70-0x0000000000800000-0x00000000008A2000-memory.dmp

          Filesize

          648KB

        • memory/3556-75-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/3556-78-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/3556-85-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/3556-82-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4440-42-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4440-38-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4440-39-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4440-43-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4804-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4804-2-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4804-48-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB