Analysis

  • max time kernel
    150s
  • max time network
    156s
  • 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, 17:00

General

  • Target

    e2e980500f2d029ed36e71c6d28aebc1526849e232cca67583b26b3f643689fc.exe

  • Size

    2.2MB

  • MD5

    b80666116e158a00ca587e809c84c574

  • SHA1

    2f695ba18adaa3e50ec2514d897684482e10b0ea

  • SHA256

    e2e980500f2d029ed36e71c6d28aebc1526849e232cca67583b26b3f643689fc

  • SHA512

    526cf4b231e3c6d0687a95c5911f125604060ccce3e33270b632d47dce99ab0d869aef6abb555c2a5c85dc946a4e4e795e02e1801076e15133f2320bdc163e41

  • SSDEEP

    49152:32NXAjt24viH2/y/NGlmp3DHeyFDAxJa4tppkuXvNrXHDI:mNwc0G26cI+EDAxJakpF/NbjI

Malware Config

Extracted

Family

socks5systemz

C2

http://aqaefbe.ru/search/?q=67e28dd83e0ff228160df91f7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978f571ea771795af8e05c642db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe13c9e6929a3f

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\e2e980500f2d029ed36e71c6d28aebc1526849e232cca67583b26b3f643689fc.exe
    "C:\Users\Admin\AppData\Local\Temp\e2e980500f2d029ed36e71c6d28aebc1526849e232cca67583b26b3f643689fc.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1988
    • C:\Users\Admin\AppData\Local\Temp\is-492PA.tmp\e2e980500f2d029ed36e71c6d28aebc1526849e232cca67583b26b3f643689fc.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-492PA.tmp\e2e980500f2d029ed36e71c6d28aebc1526849e232cca67583b26b3f643689fc.tmp" /SL5="$A0140,1910944,54272,C:\Users\Admin\AppData\Local\Temp\e2e980500f2d029ed36e71c6d28aebc1526849e232cca67583b26b3f643689fc.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:4984
      • 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:4508
      • 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:3996

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

          ecd2b40a3ab840540876eca393227e2f

          SHA1

          c89dfa2238dd0c7dda3626a2d5416d8452e1500c

          SHA256

          69b79ddca2a00f61f1187f8e524b0ebdd3179390c274316037a23559128bb277

          SHA512

          d5a29ec3fb57fe44f4cf15f08d8ad595ddf172f2de5343db396934f0173427c1bcba2e3c1dd67ecc9f0aa38503e628310e0d108305dce2978dd4ba885fe1cb90

        • C:\Users\Admin\AppData\Local\Temp\is-492PA.tmp\e2e980500f2d029ed36e71c6d28aebc1526849e232cca67583b26b3f643689fc.tmp

          Filesize

          677KB

          MD5

          5a1e3d46cb5a24f8e50b2a59d2ba1cf3

          SHA1

          fe86894c4757c144449bc744649b7fb9e03346f1

          SHA256

          d3a2c2ce7d70b3b9c30faf3f72bf4ebcdea8f331d6b6cac5dae906327997985d

          SHA512

          a27dc5c443abb31826b14e514aa717be5bf0f548b82170f79705f45ca28abaedc485c5b8738044735f61eca9e1f0ca659b519a3947551404085d07202ae709af

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

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • memory/1988-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/1988-2-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/1988-47-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/3996-84-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3996-53-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3996-90-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3996-87-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3996-46-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3996-97-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3996-78-0x0000000000960000-0x0000000000A02000-memory.dmp

          Filesize

          648KB

        • memory/3996-49-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3996-81-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3996-94-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3996-54-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3996-57-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3996-60-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3996-63-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3996-66-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3996-68-0x0000000000960000-0x0000000000A02000-memory.dmp

          Filesize

          648KB

        • memory/3996-74-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3996-77-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4508-39-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4508-42-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4508-43-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4508-38-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4984-50-0x0000000000610000-0x0000000000611000-memory.dmp

          Filesize

          4KB

        • memory/4984-48-0x0000000000400000-0x00000000004B8000-memory.dmp

          Filesize

          736KB

        • memory/4984-7-0x0000000000610000-0x0000000000611000-memory.dmp

          Filesize

          4KB