Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-06-2024 14:27

General

  • Target

    8ea69ac40be91d7769c2ef8dd1dd8d8878a9d228656ccc2023ada5a0fbb2365f.exe

  • Size

    4.9MB

  • MD5

    849b587f96a731f17d37a4d5ae2f0b7c

  • SHA1

    e2c0697598d976fbf5bf094c48f0e96bb35cce50

  • SHA256

    8ea69ac40be91d7769c2ef8dd1dd8d8878a9d228656ccc2023ada5a0fbb2365f

  • SHA512

    a21184f79bcb9c1b3bd1cd9e0e0e47059671337d5ab6bad92237c90b4b25bfbab878e6990379af398a7e9212ed1b8c427bd9b5a6f5c4471189b54e0d90fd97eb

  • SSDEEP

    98304:mAnLHmNI5nj3UUJJRJ4yef6V2STaH2DOBhBGII43Fbq:bmNI57UUJjJ4yefiNrO55h3c

Malware Config

Extracted

Family

socks5systemz

C2

cemstqk.net

Signatures

  • Detect Socks5Systemz Payload 1 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 IoCs
  • Unexpected DNS network traffic destination 3 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\8ea69ac40be91d7769c2ef8dd1dd8d8878a9d228656ccc2023ada5a0fbb2365f.exe
    "C:\Users\Admin\AppData\Local\Temp\8ea69ac40be91d7769c2ef8dd1dd8d8878a9d228656ccc2023ada5a0fbb2365f.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1392
    • C:\Users\Admin\AppData\Local\Temp\is-JCMVE.tmp\8ea69ac40be91d7769c2ef8dd1dd8d8878a9d228656ccc2023ada5a0fbb2365f.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-JCMVE.tmp\8ea69ac40be91d7769c2ef8dd1dd8d8878a9d228656ccc2023ada5a0fbb2365f.tmp" /SL5="$B004E,4940198,54272,C:\Users\Admin\AppData\Local\Temp\8ea69ac40be91d7769c2ef8dd1dd8d8878a9d228656ccc2023ada5a0fbb2365f.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2688
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:4736
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:4788

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\is-88TKN.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-JCMVE.tmp\8ea69ac40be91d7769c2ef8dd1dd8d8878a9d228656ccc2023ada5a0fbb2365f.tmp

    Filesize

    680KB

    MD5

    a84057e0e5035c21319872763d8b273c

    SHA1

    b90e1b689d755299e31ffb849238a9dd16f6ff99

    SHA256

    709f24fc9f26e097daa98410a38e37ab7328e1ed86aca88cb99e841a96b2b08f

    SHA512

    987b38ad52b0888ebd0cbd25fc857bc0251e99edc7835cb8ccafd16d7d5ace935b148984c6cdf469b898db36614369d8996b8fec97b91eeee2db264d1c5f5ab2

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

    Filesize

    3.0MB

    MD5

    53214fb200ab0d411c9ad05d2e2b012c

    SHA1

    05f1e1e008be65c384b8ad93854504d658686707

    SHA256

    5992206c8b576be2c65009b544db4827ae4e296dcddb75b855d3c3904fe8f471

    SHA512

    4cab62de32cb0e871ca8678a60faf76df03ce40b04ad0c167bbc54dcd5a8ba90be3e849e1ba6aa4968065fad27e0f8b726a2ecc59daebf12a9c6d6472f552109

  • memory/1392-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1392-3-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/1392-68-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/2688-16-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2688-69-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4736-59-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/4736-60-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/4736-63-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/4736-65-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/4788-70-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/4788-73-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/4788-76-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/4788-79-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/4788-82-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/4788-85-0x0000000000990000-0x0000000000A32000-memory.dmp

    Filesize

    648KB

  • memory/4788-87-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/4788-92-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/4788-95-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/4788-98-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/4788-101-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/4788-104-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/4788-107-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/4788-110-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/4788-113-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB