Analysis

  • max time kernel
    152s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/03/2024, 15:00

General

  • Target

    74c8cd8ed8ea31c6c767410eb34802743933c4ffdba348f8beb4bb6d07ff0d91.exe

  • Size

    2.2MB

  • MD5

    8e91ce989f6f12b5296b9f7aa6bd3860

  • SHA1

    716c12298bbda1ac368709cc7b6c31833d485976

  • SHA256

    74c8cd8ed8ea31c6c767410eb34802743933c4ffdba348f8beb4bb6d07ff0d91

  • SHA512

    3fbc6636d3eb723155cb45f8548163d00271733769d6854bd3773406c1acda7253ba07112fd670c72dc48671a671026fe0b3c626f9f1612fb8b9a27e7848018d

  • SSDEEP

    49152:32Skfob75L4zrxDpnl+GyL+OYthd1QdNdyvYDCo+jzVeFZDhdI:mSUob14zr1N8BL+OGhUyvY16UnDhdI

Malware Config

Extracted

Family

socks5systemz

C2

http://beeabez.com/search/?q=67e28dd86e58a42e450ca94d7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ee8889b5e4fa9281ae978f671ea771795af8e05c642db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ffe13c9ed909a3a

http://beeabez.com/search/?q=67e28dd86e58a42e450ca94d7c27d78406abdd88be4b12eab517aa5c96bd86e9948e4d865a8bbc896c58e713bc90c91b36b5281fc235a925ed3e55d6bd974a95129070b611e96cc92be510b866db52b2e34aec4c2b14a82966836f23d7f210c7ee949832cf6a9617

Signatures

  • Detect Socks5Systemz Payload 4 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\74c8cd8ed8ea31c6c767410eb34802743933c4ffdba348f8beb4bb6d07ff0d91.exe
    "C:\Users\Admin\AppData\Local\Temp\74c8cd8ed8ea31c6c767410eb34802743933c4ffdba348f8beb4bb6d07ff0d91.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4140
    • C:\Users\Admin\AppData\Local\Temp\is-4B4O9.tmp\74c8cd8ed8ea31c6c767410eb34802743933c4ffdba348f8beb4bb6d07ff0d91.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-4B4O9.tmp\74c8cd8ed8ea31c6c767410eb34802743933c4ffdba348f8beb4bb6d07ff0d91.tmp" /SL5="$70064,1927047,54272,C:\Users\Admin\AppData\Local\Temp\74c8cd8ed8ea31c6c767410eb34802743933c4ffdba348f8beb4bb6d07ff0d91.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:316
      • 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:4708
      • 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:3816

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          2.2MB

          MD5

          b347167a660c271a5e46da17b4d2ed2e

          SHA1

          1b924c44838230a69a108bb3ca5da4569f44d94b

          SHA256

          2a65cae99af2cc9ecb0bad0276a5c5063c837546723dad07f28457a127949211

          SHA512

          0c8145f72a34a7e9f0739b7541ecf3722cf4fc01ec615dfd988e3ef409b2a4e7360ca8da874701c3fea26aba35339e49595d338c8eff66664bcb0479469999e6

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

          Filesize

          2.0MB

          MD5

          c1888076b9d1fcb3fbea22c7ae9c4efa

          SHA1

          68cffdd86f24c026347f1954bcdeb25070dbf332

          SHA256

          4578f40c62734e6f65d1463dd632bb51b01fe3ef19941ee504454085096f3429

          SHA512

          a81793e23b80d30f6be5983fa7870a1e848dfc4b46ee9287d702c8b695fc5b50a1f8b8dabc71e84f03945faa9818410f6d48315cb2ec0afc0c46ccc632d6d50d

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

          Filesize

          896KB

          MD5

          2976e79d536cd5ad67b1964672932e27

          SHA1

          62a76042d5c9d43e88d8b529a26e40a6b3a93913

          SHA256

          22197ebaa9577382c2b27fe6aae89cd7c28204fe874ade90320baee6d286c6ff

          SHA512

          4d51950a18619d3ad9c43b7e50bef1c62c9e8234bd7c8a58ef8d097f1fc399277a03047e09ae8fc69ecb0e96eb5b227515bd72de35542240b9db061e229f43e6

        • C:\Users\Admin\AppData\Local\Temp\is-4B4O9.tmp\74c8cd8ed8ea31c6c767410eb34802743933c4ffdba348f8beb4bb6d07ff0d91.tmp

          Filesize

          677KB

          MD5

          5a1e3d46cb5a24f8e50b2a59d2ba1cf3

          SHA1

          fe86894c4757c144449bc744649b7fb9e03346f1

          SHA256

          d3a2c2ce7d70b3b9c30faf3f72bf4ebcdea8f331d6b6cac5dae906327997985d

          SHA512

          a27dc5c443abb31826b14e514aa717be5bf0f548b82170f79705f45ca28abaedc485c5b8738044735f61eca9e1f0ca659b519a3947551404085d07202ae709af

        • C:\Users\Admin\AppData\Local\Temp\is-C39IA.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • memory/316-6-0x00000000006A0000-0x00000000006A1000-memory.dmp

          Filesize

          4KB

        • memory/316-50-0x00000000006A0000-0x00000000006A1000-memory.dmp

          Filesize

          4KB

        • memory/316-48-0x0000000000400000-0x00000000004B8000-memory.dmp

          Filesize

          736KB

        • memory/3816-74-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3816-63-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3816-99-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3816-44-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3816-46-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3816-96-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3816-92-0x00000000008C0000-0x0000000000962000-memory.dmp

          Filesize

          648KB

        • memory/3816-49-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3816-91-0x00000000008C0000-0x0000000000962000-memory.dmp

          Filesize

          648KB

        • memory/3816-53-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3816-54-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3816-57-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3816-60-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3816-90-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3816-66-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3816-68-0x00000000008C0000-0x0000000000962000-memory.dmp

          Filesize

          648KB

        • memory/3816-87-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3816-77-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3816-78-0x00000000008C0000-0x0000000000962000-memory.dmp

          Filesize

          648KB

        • memory/3816-81-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3816-84-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4140-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4140-47-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4708-42-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4708-37-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4708-38-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4708-40-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB