Analysis

  • max time kernel
    150s
  • max time network
    132s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240802-en
  • resource tags

    arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    11/08/2024, 09:24

General

  • Target

    a711a5191fd1bbbef8e72ffa7bb8682c149b99305d6a797746d06ca56a19eb43.exe

  • Size

    3.6MB

  • MD5

    21a10c67389b1574b38032e56c41427a

  • SHA1

    cb09bf7fd110a0dc8233d7c357e9d9ec88b43a96

  • SHA256

    a711a5191fd1bbbef8e72ffa7bb8682c149b99305d6a797746d06ca56a19eb43

  • SHA512

    76cb3a1a96a9182f9ad83f7016a8e705e3cc7b326c0d741e3b4050111e96dbbe42c0517b4d0d91e4743de5982988d0656ba6f5548c14ec5106940b3297ed569a

  • SSDEEP

    98304:N7s7N2zcpBoX3JeeRinc5y2Gy7duOfi1nJdRR:ZIpBoXZeJnOyR6nfi1nJd

Malware Config

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.

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a711a5191fd1bbbef8e72ffa7bb8682c149b99305d6a797746d06ca56a19eb43.exe
    "C:\Users\Admin\AppData\Local\Temp\a711a5191fd1bbbef8e72ffa7bb8682c149b99305d6a797746d06ca56a19eb43.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4364
    • C:\Users\Admin\AppData\Local\Temp\is-OVRAL.tmp\a711a5191fd1bbbef8e72ffa7bb8682c149b99305d6a797746d06ca56a19eb43.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-OVRAL.tmp\a711a5191fd1bbbef8e72ffa7bb8682c149b99305d6a797746d06ca56a19eb43.tmp" /SL5="$50264,3548736,54272,C:\Users\Admin\AppData\Local\Temp\a711a5191fd1bbbef8e72ffa7bb8682c149b99305d6a797746d06ca56a19eb43.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4688
      • C:\Users\Admin\AppData\Local\XULPlayer\xulplayer.exe
        "C:\Users\Admin\AppData\Local\XULPlayer\xulplayer.exe" -i
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:3348
      • C:\Users\Admin\AppData\Local\XULPlayer\xulplayer.exe
        "C:\Users\Admin\AppData\Local\XULPlayer\xulplayer.exe" -s
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:2776

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\is-5MNLR.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • C:\Users\Admin\AppData\Local\Temp\is-OVRAL.tmp\a711a5191fd1bbbef8e72ffa7bb8682c149b99305d6a797746d06ca56a19eb43.tmp

          Filesize

          692KB

          MD5

          d541b0e8d95d631badc9ff20ed59afdd

          SHA1

          617063202f52daa60cb4a04f505418b2e4778d18

          SHA256

          9450c883637e2515bfd934548aa48e6be252bf2ec7527e60f21ff3cb6a40afad

          SHA512

          edeaf7d0c0d6ec805f446f87684b18b5d9fbbd25af506824127e781c231d08357b0fc53dc2c103e89c170c00df6644d635ea0776cdb2b780ecc027e183bf9b6c

        • C:\Users\Admin\AppData\Local\XULPlayer\xulplayer.exe

          Filesize

          3.9MB

          MD5

          c5df4bd13553cc8a838a865351694225

          SHA1

          9e58e047defde20084d3de6017e9491b3fa9c847

          SHA256

          1b1af5dc6a41c08cbf9670da851c53d588df0904c2a580474a712c5389484184

          SHA512

          2ac7b31a2154d7e3af11fd715f3609d687e3cb440938c66d2f175fa26d5da745e09d2d6fe471a8bad179321b963c44eeff7f5ad9d6598320edf3373ef5c839a9

        • memory/2776-87-0x0000000000400000-0x00000000007E0000-memory.dmp

          Filesize

          3.9MB

        • memory/2776-70-0x0000000000400000-0x00000000007E0000-memory.dmp

          Filesize

          3.9MB

        • memory/2776-111-0x0000000000400000-0x00000000007E0000-memory.dmp

          Filesize

          3.9MB

        • memory/2776-108-0x0000000000400000-0x00000000007E0000-memory.dmp

          Filesize

          3.9MB

        • memory/2776-104-0x00000000026D0000-0x0000000002772000-memory.dmp

          Filesize

          648KB

        • memory/2776-103-0x00000000026D0000-0x0000000002772000-memory.dmp

          Filesize

          648KB

        • memory/2776-60-0x0000000000400000-0x00000000007E0000-memory.dmp

          Filesize

          3.9MB

        • memory/2776-59-0x0000000000400000-0x00000000007E0000-memory.dmp

          Filesize

          3.9MB

        • memory/2776-102-0x0000000000400000-0x00000000007E0000-memory.dmp

          Filesize

          3.9MB

        • memory/2776-99-0x0000000000400000-0x00000000007E0000-memory.dmp

          Filesize

          3.9MB

        • memory/2776-63-0x0000000000400000-0x00000000007E0000-memory.dmp

          Filesize

          3.9MB

        • memory/2776-65-0x0000000000400000-0x00000000007E0000-memory.dmp

          Filesize

          3.9MB

        • memory/2776-67-0x0000000000400000-0x00000000007E0000-memory.dmp

          Filesize

          3.9MB

        • memory/2776-96-0x0000000000400000-0x00000000007E0000-memory.dmp

          Filesize

          3.9MB

        • memory/2776-73-0x0000000000400000-0x00000000007E0000-memory.dmp

          Filesize

          3.9MB

        • memory/2776-76-0x0000000000400000-0x00000000007E0000-memory.dmp

          Filesize

          3.9MB

        • memory/2776-78-0x00000000026D0000-0x0000000002772000-memory.dmp

          Filesize

          648KB

        • memory/2776-81-0x0000000000400000-0x00000000007E0000-memory.dmp

          Filesize

          3.9MB

        • memory/2776-93-0x0000000000400000-0x00000000007E0000-memory.dmp

          Filesize

          3.9MB

        • memory/2776-90-0x0000000000400000-0x00000000007E0000-memory.dmp

          Filesize

          3.9MB

        • memory/3348-54-0x0000000000400000-0x00000000007E0000-memory.dmp

          Filesize

          3.9MB

        • memory/3348-55-0x0000000000400000-0x00000000007E0000-memory.dmp

          Filesize

          3.9MB

        • memory/3348-52-0x0000000000400000-0x00000000007E0000-memory.dmp

          Filesize

          3.9MB

        • memory/4364-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4364-61-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4364-2-0x0000000000401000-0x000000000040B000-memory.dmp

          Filesize

          40KB

        • memory/4688-16-0x0000000000400000-0x00000000004BD000-memory.dmp

          Filesize

          756KB

        • memory/4688-62-0x0000000000400000-0x00000000004BD000-memory.dmp

          Filesize

          756KB