Analysis

  • max time kernel
    141s
  • max time network
    125s
  • 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, 17:04

General

  • Target

    a969a7ae7d0b7b23658a7fd04dea91066c550cfc6ead857543dd48c4ca17ff60.exe

  • Size

    2.2MB

  • MD5

    d53e4728df84f62771153cb043fdfa27

  • SHA1

    ead68c7230c6d03976d844905143a29ad9237f4d

  • SHA256

    a969a7ae7d0b7b23658a7fd04dea91066c550cfc6ead857543dd48c4ca17ff60

  • SHA512

    8ecc18d5dccdd4ad0af35701354ecf6355bf9eb0dfe89cb90bfa2e0cc5a419f6132e4ae462d673b485eb023d9f4234446674983546cb2cf2a45b59156e1f6ef1

  • SSDEEP

    49152:32NhpMCIw3nJK8D4Owzivb51u5Fk9mhLWINIrCQeaPG/EVN/I:m/mCIOJhwqt14FB8INIuoPG/2/I

Malware Config

Extracted

Family

socks5systemz

C2

http://ejnuudk.ua/search/?q=67e28dd86e0bf32a420fa9187c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4de8889b5e4fa9281ae978a071ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ffe13c9e69c9933

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 WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a969a7ae7d0b7b23658a7fd04dea91066c550cfc6ead857543dd48c4ca17ff60.exe
    "C:\Users\Admin\AppData\Local\Temp\a969a7ae7d0b7b23658a7fd04dea91066c550cfc6ead857543dd48c4ca17ff60.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3972
    • C:\Users\Admin\AppData\Local\Temp\is-RCD9S.tmp\a969a7ae7d0b7b23658a7fd04dea91066c550cfc6ead857543dd48c4ca17ff60.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-RCD9S.tmp\a969a7ae7d0b7b23658a7fd04dea91066c550cfc6ead857543dd48c4ca17ff60.tmp" /SL5="$C01C6,1911280,54272,C:\Users\Admin\AppData\Local\Temp\a969a7ae7d0b7b23658a7fd04dea91066c550cfc6ead857543dd48c4ca17ff60.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:4924
      • 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:3752
      • 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:4380

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          2.2MB

          MD5

          8944a1c523c2483a2ceb72ff50f931ac

          SHA1

          a74b8c09d2e4cfb10b8aa807a55c0a9c56d5d91b

          SHA256

          56d7e4a6c7ea0d911c1d6e0613e1df9d5b8fe139bbceb6aae38e880625cd01de

          SHA512

          d8f828808883ccbc30058bcc07520e335088927a9f8454c0f25aac7ebdca26dfdd2258099e87e3e75979db40beacbb2697e2b3b3e95a9ece0eb367777753a330

        • C:\Users\Admin\AppData\Local\Temp\is-735CR.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • C:\Users\Admin\AppData\Local\Temp\is-RCD9S.tmp\a969a7ae7d0b7b23658a7fd04dea91066c550cfc6ead857543dd48c4ca17ff60.tmp

          Filesize

          677KB

          MD5

          5a1e3d46cb5a24f8e50b2a59d2ba1cf3

          SHA1

          fe86894c4757c144449bc744649b7fb9e03346f1

          SHA256

          d3a2c2ce7d70b3b9c30faf3f72bf4ebcdea8f331d6b6cac5dae906327997985d

          SHA512

          a27dc5c443abb31826b14e514aa717be5bf0f548b82170f79705f45ca28abaedc485c5b8738044735f61eca9e1f0ca659b519a3947551404085d07202ae709af

        • memory/3752-38-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3752-39-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3752-42-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3972-46-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/3972-2-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/3972-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4380-52-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4380-66-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4380-96-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4380-48-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4380-93-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4380-89-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4380-53-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4380-56-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4380-59-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4380-62-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4380-65-0x00000000008F0000-0x0000000000992000-memory.dmp

          Filesize

          648KB

        • memory/4380-45-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4380-68-0x00000000008F0000-0x0000000000992000-memory.dmp

          Filesize

          648KB

        • memory/4380-73-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4380-76-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4380-77-0x00000000008F0000-0x0000000000992000-memory.dmp

          Filesize

          648KB

        • memory/4380-80-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4380-83-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4380-86-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4924-7-0x0000000002340000-0x0000000002341000-memory.dmp

          Filesize

          4KB

        • memory/4924-49-0x0000000002340000-0x0000000002341000-memory.dmp

          Filesize

          4KB

        • memory/4924-47-0x0000000000400000-0x00000000004B8000-memory.dmp

          Filesize

          736KB