Analysis

  • max time kernel
    144s
  • max time network
    149s
  • 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, 16:29

General

  • Target

    3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.exe

  • Size

    2.1MB

  • MD5

    1989f76bb9a2a64280ecc9ca9c3799a5

  • SHA1

    05964ae89aee8f00a892aeeeee7c2914b9f4ef3f

  • SHA256

    3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563

  • SHA512

    fd31d20b4f8cfd939fff13623fd90b2a9320a02695c87e729bbdd7266fc7e976a1542abee6b27af5b20610dedfd9523e1062be0bd261056faddb807d45c6497d

  • SSDEEP

    49152:321EkZcGqGSuSDG7jt0x+jIryKwXjtAVN593rkmiI:mGkZhuujW0CPwXj4NHiI

Malware Config

Extracted

Family

socks5systemz

C2

http://aivshli.ru/search/?q=67e28dd86f58a021415baa1e7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4fe8889b5e4fa9281ae978a471ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe13c9e89d9c3d

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\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.exe
    "C:\Users\Admin\AppData\Local\Temp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4236
    • C:\Users\Admin\AppData\Local\Temp\is-IH8NS.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-IH8NS.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp" /SL5="$A0238,1792452,54272,C:\Users\Admin\AppData\Local\Temp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1412
      • 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:416
      • 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:2084

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          2.1MB

          MD5

          491d95bb817f8588d290bcb50dd0f0e1

          SHA1

          5ba366c7e1ec13f104305abd71b7c9f9d02d3cb3

          SHA256

          9a0af8526e70f44a0b3cf1e22cf519487cafce1d55ebd3d93203ebbb8a16229c

          SHA512

          a61c6c4c24e3aa12e27f747d30c760fb3e59afa88a377e26bd53f6eca2db605d705c68bb5f5dd748f24656f1dcb3e00f669811d71cd8dd4726c48a68fc8c5448

        • C:\Users\Admin\AppData\Local\Temp\is-IH8NS.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp

          Filesize

          677KB

          MD5

          5a1e3d46cb5a24f8e50b2a59d2ba1cf3

          SHA1

          fe86894c4757c144449bc744649b7fb9e03346f1

          SHA256

          d3a2c2ce7d70b3b9c30faf3f72bf4ebcdea8f331d6b6cac5dae906327997985d

          SHA512

          a27dc5c443abb31826b14e514aa717be5bf0f548b82170f79705f45ca28abaedc485c5b8738044735f61eca9e1f0ca659b519a3947551404085d07202ae709af

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

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • memory/416-37-0x0000000000400000-0x0000000000614000-memory.dmp

          Filesize

          2.1MB

        • memory/416-38-0x0000000000400000-0x0000000000614000-memory.dmp

          Filesize

          2.1MB

        • memory/416-42-0x0000000000400000-0x0000000000614000-memory.dmp

          Filesize

          2.1MB

        • memory/1412-47-0x0000000000400000-0x00000000004B8000-memory.dmp

          Filesize

          736KB

        • memory/1412-6-0x0000000002340000-0x0000000002341000-memory.dmp

          Filesize

          4KB

        • memory/1412-49-0x0000000002340000-0x0000000002341000-memory.dmp

          Filesize

          4KB

        • memory/2084-53-0x0000000000400000-0x0000000000614000-memory.dmp

          Filesize

          2.1MB

        • memory/2084-76-0x0000000000930000-0x00000000009D2000-memory.dmp

          Filesize

          648KB

        • memory/2084-48-0x0000000000400000-0x0000000000614000-memory.dmp

          Filesize

          2.1MB

        • memory/2084-45-0x0000000000400000-0x0000000000614000-memory.dmp

          Filesize

          2.1MB

        • memory/2084-52-0x0000000000400000-0x0000000000614000-memory.dmp

          Filesize

          2.1MB

        • memory/2084-95-0x0000000000400000-0x0000000000614000-memory.dmp

          Filesize

          2.1MB

        • memory/2084-56-0x0000000000400000-0x0000000000614000-memory.dmp

          Filesize

          2.1MB

        • memory/2084-59-0x0000000000400000-0x0000000000614000-memory.dmp

          Filesize

          2.1MB

        • memory/2084-62-0x0000000000400000-0x0000000000614000-memory.dmp

          Filesize

          2.1MB

        • memory/2084-65-0x0000000000400000-0x0000000000614000-memory.dmp

          Filesize

          2.1MB

        • memory/2084-66-0x0000000000930000-0x00000000009D2000-memory.dmp

          Filesize

          648KB

        • memory/2084-72-0x0000000000400000-0x0000000000614000-memory.dmp

          Filesize

          2.1MB

        • memory/2084-75-0x0000000000400000-0x0000000000614000-memory.dmp

          Filesize

          2.1MB

        • memory/2084-92-0x0000000000400000-0x0000000000614000-memory.dmp

          Filesize

          2.1MB

        • memory/2084-79-0x0000000000400000-0x0000000000614000-memory.dmp

          Filesize

          2.1MB

        • memory/2084-82-0x0000000000400000-0x0000000000614000-memory.dmp

          Filesize

          2.1MB

        • memory/2084-85-0x0000000000400000-0x0000000000614000-memory.dmp

          Filesize

          2.1MB

        • memory/2084-88-0x0000000000400000-0x0000000000614000-memory.dmp

          Filesize

          2.1MB

        • memory/4236-46-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4236-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB