Analysis

  • max time kernel
    144s
  • max time network
    145s
  • 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, 16:29

General

  • Target

    58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.exe

  • Size

    2.1MB

  • MD5

    be35ba37e3e97d4d73b41a85bc0f3712

  • SHA1

    4c2250443f00cb92fb24e72693efe03f9efe7dd5

  • SHA256

    58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3

  • SHA512

    b00631c317829ad12d65f2596bd2b0a4bc311fe9b6f5ab31b62b7f17390d7e13fb82092bf56bef255830c6d168346dd182651e4089c05c8c1e99cbdd82562bf8

  • SSDEEP

    49152:32ckmS+nRXTVm9OiTELutm7K1Y7XSe6iuf1I:mckd+/mUSELuGK4XSlio1I

Malware Config

Extracted

Family

socks5systemz

C2

http://ervuvue.ua/search/?q=67e28dd86e0bf32a420fa9187c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4de8889b5e4fa9281ae978a071ea771795af8e05c642db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ffe13c9e89d983d

http://ervuvue.ua/search/?q=67e28dd86e0bf32a420fa9187c27d78406abdd88be4b12eab517aa5c96bd86ee9c864c805a8bbc896c58e713bc90c91836b5281fc235a925ed3e03d6bd974a95129070b611e96cc92be510b866db52b2e34aec4c2b14a82966836f23d7f210c7ee949832ca679410

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\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.exe
    "C:\Users\Admin\AppData\Local\Temp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1736
    • C:\Users\Admin\AppData\Local\Temp\is-2CHKU.tmp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-2CHKU.tmp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.tmp" /SL5="$5011A,1883071,54272,C:\Users\Admin\AppData\Local\Temp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:3208
      • 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:2116
      • 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:1344

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

          8137ffd3a3a9aea8838730a19442b5c0

          SHA1

          11e3bfceaf5a747c3d81cb6916132dbb2f893cc5

          SHA256

          0e50507b35633bd387895c1fab90a803bd63b27bd0e63b6ace8b5f9dfe1bf352

          SHA512

          969afa20bc66da92876da048ecd018f5c65b30eadda75c86620139349a929cae1d23a3fe95f7f12de32a6fb8a45c7e952324e64007868badf9a2c8cfa87d0353

        • C:\Users\Admin\AppData\Local\Temp\is-2CHKU.tmp\58140ab5301108301770d10e8989f13722c562f07fcd55582b3a9d0b339df3a3.tmp

          Filesize

          677KB

          MD5

          5a1e3d46cb5a24f8e50b2a59d2ba1cf3

          SHA1

          fe86894c4757c144449bc744649b7fb9e03346f1

          SHA256

          d3a2c2ce7d70b3b9c30faf3f72bf4ebcdea8f331d6b6cac5dae906327997985d

          SHA512

          a27dc5c443abb31826b14e514aa717be5bf0f548b82170f79705f45ca28abaedc485c5b8738044735f61eca9e1f0ca659b519a3947551404085d07202ae709af

        • C:\Users\Admin\AppData\Local\Temp\is-E7HVU.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • memory/1344-77-0x0000000000400000-0x000000000062D000-memory.dmp

          Filesize

          2.2MB

        • memory/1344-78-0x0000000000730000-0x00000000007D2000-memory.dmp

          Filesize

          648KB

        • memory/1344-99-0x0000000000400000-0x000000000062D000-memory.dmp

          Filesize

          2.2MB

        • memory/1344-96-0x0000000000400000-0x000000000062D000-memory.dmp

          Filesize

          2.2MB

        • memory/1344-92-0x0000000000730000-0x00000000007D2000-memory.dmp

          Filesize

          648KB

        • memory/1344-91-0x0000000000730000-0x00000000007D2000-memory.dmp

          Filesize

          648KB

        • memory/1344-90-0x0000000000400000-0x000000000062D000-memory.dmp

          Filesize

          2.2MB

        • memory/1344-46-0x0000000000400000-0x000000000062D000-memory.dmp

          Filesize

          2.2MB

        • memory/1344-87-0x0000000000400000-0x000000000062D000-memory.dmp

          Filesize

          2.2MB

        • memory/1344-84-0x0000000000400000-0x000000000062D000-memory.dmp

          Filesize

          2.2MB

        • memory/1344-49-0x0000000000400000-0x000000000062D000-memory.dmp

          Filesize

          2.2MB

        • memory/1344-81-0x0000000000400000-0x000000000062D000-memory.dmp

          Filesize

          2.2MB

        • memory/1344-53-0x0000000000400000-0x000000000062D000-memory.dmp

          Filesize

          2.2MB

        • memory/1344-54-0x0000000000400000-0x000000000062D000-memory.dmp

          Filesize

          2.2MB

        • memory/1344-57-0x0000000000400000-0x000000000062D000-memory.dmp

          Filesize

          2.2MB

        • memory/1344-63-0x0000000000400000-0x000000000062D000-memory.dmp

          Filesize

          2.2MB

        • memory/1344-68-0x0000000000400000-0x000000000062D000-memory.dmp

          Filesize

          2.2MB

        • memory/1344-65-0x0000000000730000-0x00000000007D2000-memory.dmp

          Filesize

          648KB

        • memory/1344-60-0x0000000000400000-0x000000000062D000-memory.dmp

          Filesize

          2.2MB

        • memory/1344-69-0x0000000000730000-0x00000000007D2000-memory.dmp

          Filesize

          648KB

        • memory/1344-74-0x0000000000400000-0x000000000062D000-memory.dmp

          Filesize

          2.2MB

        • memory/1736-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/1736-47-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/1736-2-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/2116-43-0x0000000000400000-0x000000000062D000-memory.dmp

          Filesize

          2.2MB

        • memory/2116-42-0x0000000000400000-0x000000000062D000-memory.dmp

          Filesize

          2.2MB

        • memory/2116-39-0x0000000000400000-0x000000000062D000-memory.dmp

          Filesize

          2.2MB

        • memory/2116-38-0x0000000000400000-0x000000000062D000-memory.dmp

          Filesize

          2.2MB

        • memory/3208-7-0x0000000000650000-0x0000000000651000-memory.dmp

          Filesize

          4KB

        • memory/3208-50-0x0000000000650000-0x0000000000651000-memory.dmp

          Filesize

          4KB

        • memory/3208-48-0x0000000000400000-0x00000000004B8000-memory.dmp

          Filesize

          736KB