Analysis

  • max time kernel
    146s
  • max time network
    149s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240611-en
  • resource tags

    arch:x64arch:x86image:win11-20240611-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    24-06-2024 20:55

General

  • Target

    a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.exe

  • Size

    4.8MB

  • MD5

    20b715255948a66e9c034bbb86e34e24

  • SHA1

    295c9b4a35dd22c10cf14b1b80939fd3bf8a6273

  • SHA256

    a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd

  • SHA512

    a71aaf3ac80420761cdf0a75cdd4cd636f814540ca1155a17f7e22b2d68d6e9c48c61d1ac865aa90af5471592745deefb170a3459e7a5f52faae8a03bef91ca2

  • SSDEEP

    98304:mdvtdkxcJjbuUdWlL0NAwBrnx7h0nI4KcNNcAyIn0dn1Ufizm3ASzT:kvXkxcuUd6qjBrnAnnUAyIDhASX

Malware Config

Extracted

Family

socks5systemz

C2

ezypdec.ua

http://ezypdec.ua/search/?q=67e28dd86459a42c4009ab4e7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4de8889b5e4fa9281ae978f171ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff613c6ed939b39

http://ezypdec.ua/search/?q=67e28dd86459a42c4009ab4e7c27d78406abdd88be4b12eab517aa5c96bd86ea93834896148ab2865b77f80ebad9c50f7cb63037ed2ab423a4344383ba915d911ec07bb606a0708727e40ea678c751bbe34efb0e2807e12571c17f3e83fe16c1e6979c39cb6e94

Signatures

  • Detect Socks5Systemz Payload 3 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 FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.exe
    "C:\Users\Admin\AppData\Local\Temp\a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2688
    • C:\Users\Admin\AppData\Local\Temp\is-R443E.tmp\a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-R443E.tmp\a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.tmp" /SL5="$70068,4735694,54272,C:\Users\Admin\AppData\Local\Temp\a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4668
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:4560
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:4652

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\is-N18IF.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-R443E.tmp\a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.tmp

    Filesize

    680KB

    MD5

    fe8159895c04f572c0d4ff483fde0a81

    SHA1

    7b5cd749bb4ac1e5a57f1b11cd33857d5d2514ef

    SHA256

    36e684553464cedcab2f2766d44d135206af42c396379a98ac45e476517fb0e6

    SHA512

    ccaa6b1e6229f93fe5a087d1c3c711402f780521a403617ab12ee32844f3f1ea74e9f103cad76b0d1a25bee0cb2e22bb393c685844ae714777b6e3e54ce79392

  • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe

    Filesize

    2.8MB

    MD5

    94b4d42bcf15988d59b2c3f38c3b158e

    SHA1

    595c58eb2ef0e1d8f869cd95f21b2adf0628e335

    SHA256

    0dd841df41a36a20210c5d24199578e423d91623691dd6875e3a2b08fcdecd91

    SHA512

    18d6132d8aa400a2ced3494a5007546beb86fa52c52eac65acf96ae3aae197a214dea936a292c284e58b0b77f27e5e11a90cd158834f7f5caadbb8f49974a6ef

  • memory/2688-69-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/2688-2-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/2688-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4560-59-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4560-63-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4560-64-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4560-60-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4652-75-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4652-107-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4652-66-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4652-119-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4652-71-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4652-74-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4652-116-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4652-78-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4652-81-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4652-84-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4652-87-0x00000000009E0000-0x0000000000A82000-memory.dmp

    Filesize

    648KB

  • memory/4652-90-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4652-95-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4652-98-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4652-101-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4652-104-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4652-68-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4652-110-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4652-111-0x00000000009E0000-0x0000000000A82000-memory.dmp

    Filesize

    648KB

  • memory/4652-112-0x00000000009E0000-0x0000000000A82000-memory.dmp

    Filesize

    648KB

  • memory/4668-13-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4668-70-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB