Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-05-2024 14:38

General

  • Target

    73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.exe

  • Size

    4.8MB

  • MD5

    c0939c4e02d7f923521547cf00555931

  • SHA1

    5d086d147285c9f0052278c73b76858c6c6d7ea6

  • SHA256

    73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86

  • SHA512

    dc65f1f0980ea2c367dd222ae58fda64aed9fc3671081e984717a041c999000c167ddd4c6408565015e7888b7313e9e73876150ec2d0c912dac9dd22e9ad35dd

  • SSDEEP

    98304:mM+Ltae1Mzk5RDdsoaLp/icLUSrBtywZXexvKhy9HPpVjSTZWj2dVO:50taiMHZL1icLUuBtywZX6ihyJPpVm49

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.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.exe
    "C:\Users\Admin\AppData\Local\Temp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4632
    • C:\Users\Admin\AppData\Local\Temp\is-D7KJL.tmp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-D7KJL.tmp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.tmp" /SL5="$90066,4741370,54272,C:\Users\Admin\AppData\Local\Temp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:1500
      • C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
        "C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:4276
      • C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
        "C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:1692

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

    Filesize

    3.3MB

    MD5

    53eda1ebe9a77073ee7f0769f3065f63

    SHA1

    7599a89cbb70b20eb1e37c3a89147d7667a93af0

    SHA256

    60415657df6dacf7dcd2dd30096039baf2501cdbfc07610207315f27712c6d51

    SHA512

    a712a58591246f34b3a723e3848b012434631d1c732e82ef86a1e801af299f8f65e22458b29e0cd8a74b3dc46f4af359e4d5fdf44a2070e2f59d1a4fecc6ee67

  • C:\Users\Admin\AppData\Local\Temp\is-88T2F.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-D7KJL.tmp\73f91561e639bafbd95ed29728a73d19d78f57f38521d253220b697f7c2d1b86.tmp

    Filesize

    680KB

    MD5

    281b7192d7fae9f9f4f11ad30842bfaa

    SHA1

    35ca07cc4d95c2132eb31152974417ba96e51d43

    SHA256

    fca779fea2596da2a6f434cc9df9e6b44d1c176668b5c80bd76c00e91e478a4c

    SHA512

    a63c9a298974c93dc4eb02e360d45db077f16a6921ac42bedb59a9fe46156fb50f46cb109d97ded3039300d3e38f4370bda0665b1013b3e662c6aec927635ef2

  • memory/1500-71-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1500-12-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1692-102-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/1692-76-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/1692-112-0x00000000008A0000-0x0000000000942000-memory.dmp

    Filesize

    648KB

  • memory/1692-111-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/1692-108-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/1692-68-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/1692-69-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/1692-105-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/1692-120-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/1692-72-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/1692-75-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/1692-113-0x00000000008A0000-0x0000000000942000-memory.dmp

    Filesize

    648KB

  • memory/1692-79-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/1692-82-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/1692-85-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/1692-88-0x00000000008A0000-0x0000000000942000-memory.dmp

    Filesize

    648KB

  • memory/1692-90-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/1692-96-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/1692-99-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/1692-117-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/4276-59-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/4276-65-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/4276-60-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/4276-63-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/4632-70-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4632-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4632-3-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB