Analysis

  • max time kernel
    169s
  • max time network
    159s
  • 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, 18:44

General

  • Target

    835ee3b9df1576b84615cc0bf06a533e34f1ea431b2ac3d600bef751e68c34d2.exe

  • Size

    2.0MB

  • MD5

    18cd6d6cbd528a40637527c4ad877ec2

  • SHA1

    6c7c7924c4d3302e9bc216d631f2834ad304a64e

  • SHA256

    835ee3b9df1576b84615cc0bf06a533e34f1ea431b2ac3d600bef751e68c34d2

  • SHA512

    c2cd03eb3e894464ee9474c25053165327fa8a4389897259eee02f4446b77bab2bdabe35ea338176fb88df4c625bcb3e00d0d8fab61c7876ca5c5986171303ce

  • SSDEEP

    49152:32uzUgsg/9ncv65k7C/FONspKiFiY83sMp5JtHtI:mOUkncv4kZiMeMpTxtI

Malware Config

Extracted

Family

socks5systemz

C2

http://bbgbauc.com/search/?q=67e28dd86f58a021415baa1e7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4fe8889b5e4fa9281ae978a471ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe12c0ea9c9f3d

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\835ee3b9df1576b84615cc0bf06a533e34f1ea431b2ac3d600bef751e68c34d2.exe
    "C:\Users\Admin\AppData\Local\Temp\835ee3b9df1576b84615cc0bf06a533e34f1ea431b2ac3d600bef751e68c34d2.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:800
    • C:\Users\Admin\AppData\Local\Temp\is-SJ1BI.tmp\835ee3b9df1576b84615cc0bf06a533e34f1ea431b2ac3d600bef751e68c34d2.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-SJ1BI.tmp\835ee3b9df1576b84615cc0bf06a533e34f1ea431b2ac3d600bef751e68c34d2.tmp" /SL5="$5022C,1724921,54272,C:\Users\Admin\AppData\Local\Temp\835ee3b9df1576b84615cc0bf06a533e34f1ea431b2ac3d600bef751e68c34d2.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1312
      • 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:5044
      • 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:4684

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          755KB

          MD5

          36c99aef68d3cdd2c45103c8de31c369

          SHA1

          df14c8a3704188057d84db938edaba542f7aaa18

          SHA256

          f4f9b5cd51d9c70a25c635df492dce366440c404bec55be72154d6f51138885a

          SHA512

          e7d4a551c2f66ca7150927cc7bfdf12d4ba9a5cc6706baccc5997f29b27b3a9c65fe5d5c833d6b3e7f4fea8f6b1369556aee819ebd87bd5b57a7300b906327c6

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

          Filesize

          2.0MB

          MD5

          86af76d95c85dd2d7e313d735d0b4819

          SHA1

          ecccf9828e5647c549e22eb7ebeaec89f7c0f36f

          SHA256

          d3a3ebb4b3958512f7682ff3c8840347a2e5f909a92f08d3b1bc79a98e9ffdd6

          SHA512

          5d632c7ab99ce586ef633760369731f791e2c0364b415928cbf381e9abdcd65b905d1d1d40af33fec799cc5843b8ac4167d6b326fcf5379b5ad1a12414cd7c31

        • C:\Users\Admin\AppData\Local\Temp\is-8GA71.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • C:\Users\Admin\AppData\Local\Temp\is-SJ1BI.tmp\835ee3b9df1576b84615cc0bf06a533e34f1ea431b2ac3d600bef751e68c34d2.tmp

          Filesize

          677KB

          MD5

          5a1e3d46cb5a24f8e50b2a59d2ba1cf3

          SHA1

          fe86894c4757c144449bc744649b7fb9e03346f1

          SHA256

          d3a2c2ce7d70b3b9c30faf3f72bf4ebcdea8f331d6b6cac5dae906327997985d

          SHA512

          a27dc5c443abb31826b14e514aa717be5bf0f548b82170f79705f45ca28abaedc485c5b8738044735f61eca9e1f0ca659b519a3947551404085d07202ae709af

        • memory/800-2-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/800-34-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/800-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/1312-48-0x0000000000400000-0x00000000004B8000-memory.dmp

          Filesize

          736KB

        • memory/1312-7-0x0000000002340000-0x0000000002341000-memory.dmp

          Filesize

          4KB

        • memory/1312-51-0x0000000002340000-0x0000000002341000-memory.dmp

          Filesize

          4KB

        • memory/4684-78-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4684-69-0x00000000008F0000-0x0000000000992000-memory.dmp

          Filesize

          648KB

        • memory/4684-98-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4684-50-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4684-95-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4684-54-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4684-55-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4684-58-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4684-61-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4684-64-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4684-67-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4684-47-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4684-68-0x00000000008F0000-0x0000000000992000-memory.dmp

          Filesize

          648KB

        • memory/4684-75-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4684-91-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4684-80-0x00000000008F0000-0x0000000000992000-memory.dmp

          Filesize

          648KB

        • memory/4684-82-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4684-85-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4684-88-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/5044-40-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/5044-39-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/5044-44-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB