Analysis

  • max time kernel
    150s
  • max time network
    161s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240221-en
  • resource tags

    arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    24/03/2024, 14:53

General

  • Target

    c328aa52b0262a374d42a9cb368b1c024376588d547cb8a249bd2b443c75151f.exe

  • Size

    2.2MB

  • MD5

    7633dca5d925b32abd366e91fbe2ac98

  • SHA1

    727421d01d802cc078888b5c1ee8d3f23918e9fa

  • SHA256

    c328aa52b0262a374d42a9cb368b1c024376588d547cb8a249bd2b443c75151f

  • SHA512

    d5803a807abe581f7410e188a6fd0f85f04023ee9bc9bd9888084c4dbc7783b77d53f65b7ae4edc13883ca35fa7c4e382afea657e2c8cd2a1d296ce00e0f32d6

  • SSDEEP

    49152:32mfQXYO8+s1Ax+ZO6jYSkoHsOuMRSgkWZ7G5jvhQYI:mXYb+UAxe1j3kOsiSgfZ7G5jvhI

Malware Config

Extracted

Family

socks5systemz

C2

http://dihdaoe.info/search/?q=67e28dd83f08f2204807f9497c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4be8889b5e4fa9281ae978ff71ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe13c9ed959c39

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\c328aa52b0262a374d42a9cb368b1c024376588d547cb8a249bd2b443c75151f.exe
    "C:\Users\Admin\AppData\Local\Temp\c328aa52b0262a374d42a9cb368b1c024376588d547cb8a249bd2b443c75151f.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1800
    • C:\Users\Admin\AppData\Local\Temp\is-1NC01.tmp\c328aa52b0262a374d42a9cb368b1c024376588d547cb8a249bd2b443c75151f.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-1NC01.tmp\c328aa52b0262a374d42a9cb368b1c024376588d547cb8a249bd2b443c75151f.tmp" /SL5="$80218,1935887,54272,C:\Users\Admin\AppData\Local\Temp\c328aa52b0262a374d42a9cb368b1c024376588d547cb8a249bd2b443c75151f.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:4020
      • 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:3460
      • 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:4928

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

          aab53ad82ae610c58d3f84145b5faf33

          SHA1

          1095d690a94c7a3b8efe3b4d0ae3e081b3f4d8a1

          SHA256

          357e8d5b68ecd7c862b7128059e1691138590eacada4c925b307e30a1738c867

          SHA512

          33df4fd877180feb0eea30b96b947a1d6c87c1de80e0ef0e101a06202d9fcc82d5bc9f9496678f268aee3bce18d6cb1acf064fb0aa9eaf641ece396166f12668

        • C:\Users\Admin\AppData\Local\Temp\is-1NC01.tmp\c328aa52b0262a374d42a9cb368b1c024376588d547cb8a249bd2b443c75151f.tmp

          Filesize

          677KB

          MD5

          5a1e3d46cb5a24f8e50b2a59d2ba1cf3

          SHA1

          fe86894c4757c144449bc744649b7fb9e03346f1

          SHA256

          d3a2c2ce7d70b3b9c30faf3f72bf4ebcdea8f331d6b6cac5dae906327997985d

          SHA512

          a27dc5c443abb31826b14e514aa717be5bf0f548b82170f79705f45ca28abaedc485c5b8738044735f61eca9e1f0ca659b519a3947551404085d07202ae709af

        • C:\Users\Admin\AppData\Local\Temp\is-B30IE.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • memory/1800-2-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/1800-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/1800-47-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/3460-38-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3460-39-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3460-43-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4020-50-0x0000000002440000-0x0000000002441000-memory.dmp

          Filesize

          4KB

        • memory/4020-7-0x0000000002440000-0x0000000002441000-memory.dmp

          Filesize

          4KB

        • memory/4020-48-0x0000000000400000-0x00000000004B8000-memory.dmp

          Filesize

          736KB

        • memory/4928-53-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4928-74-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4928-46-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4928-54-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4928-57-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4928-60-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4928-63-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4928-66-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4928-68-0x0000000000870000-0x0000000000912000-memory.dmp

          Filesize

          648KB

        • memory/4928-49-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4928-77-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4928-78-0x0000000000870000-0x0000000000912000-memory.dmp

          Filesize

          648KB

        • memory/4928-81-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4928-84-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4928-87-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4928-90-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4928-94-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4928-97-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB