Analysis

  • max time kernel
    141s
  • max time network
    142s
  • 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, 18:42

General

  • Target

    01781dde8e2b2ad5eea14fb491b32ec0a6a347fac2c2f47f7b5d550a9c52df77.exe

  • Size

    2.0MB

  • MD5

    2bf527f3af542725d6d7aa0891136a22

  • SHA1

    7db81c09e86e755642472c347e94cb95b4a62643

  • SHA256

    01781dde8e2b2ad5eea14fb491b32ec0a6a347fac2c2f47f7b5d550a9c52df77

  • SHA512

    f6125c68f2a85ca4f832437a5751f367bd3859d8924350623589afaa14d041f52d57247d74957d9a53fa82f502bcf5163b7356d3611889c4675b6b10680dcab6

  • SSDEEP

    49152:32g1KvY8oHbk2HcrT/gwEbtsQeYiOIzU1OjkbXXuct9fIdcMDgz5I:mg1KvYFw/gwE5+DOIAsjkbOctBIdcMDH

Malware Config

Extracted

Family

socks5systemz

C2

http://bguarxw.com/search/?q=67e28dd83d0ef479150af9197c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4be8889b5e4fa9281ae978a571ea771795af8e05c642db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe12c0ea9d983a

http://bguarxw.com/search/?q=67e28dd83d0ef479150af9197c27d78406abdd88be4b12eab517aa5c96bd86e996834d96148ab2865b77f80ebad9c30f7cb63037ed2ab423a4604383ba915d911ec07bb106a0708727e40ea678c751bbe34efb0e2807e12571c17f3e83fe16c1ee969a3ec56d97

Signatures

  • Detect Socks5Systemz Payload 5 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\01781dde8e2b2ad5eea14fb491b32ec0a6a347fac2c2f47f7b5d550a9c52df77.exe
    "C:\Users\Admin\AppData\Local\Temp\01781dde8e2b2ad5eea14fb491b32ec0a6a347fac2c2f47f7b5d550a9c52df77.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3604
    • C:\Users\Admin\AppData\Local\Temp\is-R2IRN.tmp\01781dde8e2b2ad5eea14fb491b32ec0a6a347fac2c2f47f7b5d550a9c52df77.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-R2IRN.tmp\01781dde8e2b2ad5eea14fb491b32ec0a6a347fac2c2f47f7b5d550a9c52df77.tmp" /SL5="$50208,1762749,54272,C:\Users\Admin\AppData\Local\Temp\01781dde8e2b2ad5eea14fb491b32ec0a6a347fac2c2f47f7b5d550a9c52df77.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:564
      • 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:3984
      • 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:4440

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          448KB

          MD5

          a627dbe5b2a5925605cc8ee498e44511

          SHA1

          4e266bbe66e9cff006d810266843f739ac1b7138

          SHA256

          1f4bedbe1fc869177968430331ea29836770463da7665f085f40f47eb3e3a5a1

          SHA512

          a19e21c43996180933bf1a1eac42a4da9b7f59027b2f2f48d07e77509ac7a60c0a7b6165a16d1cff356947ebda55ef9feb237bbd3257596100ed0d4caf977a35

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

          Filesize

          2.0MB

          MD5

          60f9c5a74ac1ec0aec4e4b4a4d139486

          SHA1

          cfdaace9ecd3a8ad68af2d3758fa53d1de39d0df

          SHA256

          e5f000773b88a971d8039e00957cad8fabef01bf3db09b2f151cdf5d43576d84

          SHA512

          50594bb2c97cb439c3ba75880f4005dbf034eafbb16fcd58a218969b443ddcb512ec83e8619c2ba6d35b580f0df82085a055daf19192b985c594ebc69a2fc965

        • C:\Users\Admin\AppData\Local\Temp\is-OJ734.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • C:\Users\Admin\AppData\Local\Temp\is-R2IRN.tmp\01781dde8e2b2ad5eea14fb491b32ec0a6a347fac2c2f47f7b5d550a9c52df77.tmp

          Filesize

          677KB

          MD5

          5a1e3d46cb5a24f8e50b2a59d2ba1cf3

          SHA1

          fe86894c4757c144449bc744649b7fb9e03346f1

          SHA256

          d3a2c2ce7d70b3b9c30faf3f72bf4ebcdea8f331d6b6cac5dae906327997985d

          SHA512

          a27dc5c443abb31826b14e514aa717be5bf0f548b82170f79705f45ca28abaedc485c5b8738044735f61eca9e1f0ca659b519a3947551404085d07202ae709af

        • memory/564-6-0x0000000002300000-0x0000000002301000-memory.dmp

          Filesize

          4KB

        • memory/564-47-0x0000000000400000-0x00000000004B8000-memory.dmp

          Filesize

          736KB

        • memory/564-49-0x0000000002300000-0x0000000002301000-memory.dmp

          Filesize

          4KB

        • memory/3604-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/3604-46-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/3984-37-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/3984-42-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/3984-41-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/3984-38-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4440-53-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4440-76-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4440-52-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4440-45-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4440-56-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4440-59-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4440-62-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4440-64-0x00000000008F0000-0x0000000000992000-memory.dmp

          Filesize

          648KB

        • memory/4440-66-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4440-68-0x00000000008F0000-0x0000000000992000-memory.dmp

          Filesize

          648KB

        • memory/4440-73-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4440-48-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4440-77-0x00000000008F0000-0x0000000000992000-memory.dmp

          Filesize

          648KB

        • memory/4440-80-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4440-83-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4440-86-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4440-89-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4440-90-0x00000000008F0000-0x0000000000992000-memory.dmp

          Filesize

          648KB

        • memory/4440-91-0x00000000008F0000-0x0000000000992000-memory.dmp

          Filesize

          648KB

        • memory/4440-95-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4440-98-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB