Analysis

  • max time kernel
    141s
  • max time network
    153s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240508-en
  • resource tags

    arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    30-05-2024 15:33

General

  • Target

    492173b2e7ac0be1ddc6550fa2540c68fdb2fd6739de1eea9c766510fb0322a1.exe

  • Size

    4.7MB

  • MD5

    053681e45afa30a7750155f0a6715321

  • SHA1

    04166258a21e8ef70087e007dcc0394eac7a100e

  • SHA256

    492173b2e7ac0be1ddc6550fa2540c68fdb2fd6739de1eea9c766510fb0322a1

  • SHA512

    9f5967d009f6fc235a9dd6aa1ed16ddb75a6f5c3c726d1157a1a760d9b77dd6b10994550ee1a5dbe606b5d9a43f11b8c225a6ff3eaab6f512a3bc17cfac2944c

  • SSDEEP

    98304:mhS0vMui1idKgi67oiV5U4fzTvySm3xiczTOQUBMXsOe2ZzK97DO:ZrIdKqtViYHQyQ+O3xaW

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\492173b2e7ac0be1ddc6550fa2540c68fdb2fd6739de1eea9c766510fb0322a1.exe
    "C:\Users\Admin\AppData\Local\Temp\492173b2e7ac0be1ddc6550fa2540c68fdb2fd6739de1eea9c766510fb0322a1.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2364
    • C:\Users\Admin\AppData\Local\Temp\is-84BIR.tmp\492173b2e7ac0be1ddc6550fa2540c68fdb2fd6739de1eea9c766510fb0322a1.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-84BIR.tmp\492173b2e7ac0be1ddc6550fa2540c68fdb2fd6739de1eea9c766510fb0322a1.tmp" /SL5="$40242,4693505,54272,C:\Users\Admin\AppData\Local\Temp\492173b2e7ac0be1ddc6550fa2540c68fdb2fd6739de1eea9c766510fb0322a1.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2432
      • C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
        "C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:4544
      • C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
        "C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:2580

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    3.2MB

    MD5

    fb3f6cbae323b70b6e1e075b59f4d1d9

    SHA1

    c446f8d464ce0cadd4e1c6e8db00b2eef69fa6a2

    SHA256

    c93cd0bb3b4f8a8bfc9a056cffae6abbec2f8952026828e80569893a752ab43c

    SHA512

    95e4132dbcfbd022df2c2a958f438c1afa167b3115ad9dbd20e77fbaa846b1e4de87a2885ce3bdf65f06958aa399f38ae05f5e7c0d9f6fd575d46249fd16ac5f

  • C:\Users\Admin\AppData\Local\Temp\is-84BIR.tmp\492173b2e7ac0be1ddc6550fa2540c68fdb2fd6739de1eea9c766510fb0322a1.tmp

    Filesize

    680KB

    MD5

    281b7192d7fae9f9f4f11ad30842bfaa

    SHA1

    35ca07cc4d95c2132eb31152974417ba96e51d43

    SHA256

    fca779fea2596da2a6f434cc9df9e6b44d1c176668b5c80bd76c00e91e478a4c

    SHA512

    a63c9a298974c93dc4eb02e360d45db077f16a6921ac42bedb59a9fe46156fb50f46cb109d97ded3039300d3e38f4370bda0665b1013b3e662c6aec927635ef2

  • C:\Users\Admin\AppData\Local\Temp\is-KMVM1.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • memory/2364-69-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/2364-2-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/2364-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/2432-7-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2432-70-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2580-97-0x0000000000400000-0x000000000073F000-memory.dmp

    Filesize

    3.2MB

  • memory/2580-88-0x0000000000400000-0x000000000073F000-memory.dmp

    Filesize

    3.2MB

  • memory/2580-68-0x0000000000400000-0x000000000073F000-memory.dmp

    Filesize

    3.2MB

  • memory/2580-118-0x0000000000400000-0x000000000073F000-memory.dmp

    Filesize

    3.2MB

  • memory/2580-115-0x0000000000400000-0x000000000073F000-memory.dmp

    Filesize

    3.2MB

  • memory/2580-71-0x0000000000400000-0x000000000073F000-memory.dmp

    Filesize

    3.2MB

  • memory/2580-74-0x0000000000400000-0x000000000073F000-memory.dmp

    Filesize

    3.2MB

  • memory/2580-77-0x0000000000400000-0x000000000073F000-memory.dmp

    Filesize

    3.2MB

  • memory/2580-80-0x0000000000400000-0x000000000073F000-memory.dmp

    Filesize

    3.2MB

  • memory/2580-83-0x0000000000400000-0x000000000073F000-memory.dmp

    Filesize

    3.2MB

  • memory/2580-86-0x0000000000940000-0x00000000009E2000-memory.dmp

    Filesize

    648KB

  • memory/2580-111-0x0000000000940000-0x00000000009E2000-memory.dmp

    Filesize

    648KB

  • memory/2580-94-0x0000000000400000-0x000000000073F000-memory.dmp

    Filesize

    3.2MB

  • memory/2580-110-0x0000000000940000-0x00000000009E2000-memory.dmp

    Filesize

    648KB

  • memory/2580-100-0x0000000000400000-0x000000000073F000-memory.dmp

    Filesize

    3.2MB

  • memory/2580-103-0x0000000000400000-0x000000000073F000-memory.dmp

    Filesize

    3.2MB

  • memory/2580-106-0x0000000000400000-0x000000000073F000-memory.dmp

    Filesize

    3.2MB

  • memory/2580-109-0x0000000000400000-0x000000000073F000-memory.dmp

    Filesize

    3.2MB

  • memory/4544-59-0x0000000000400000-0x000000000073F000-memory.dmp

    Filesize

    3.2MB

  • memory/4544-65-0x0000000000400000-0x000000000073F000-memory.dmp

    Filesize

    3.2MB

  • memory/4544-61-0x0000000000400000-0x000000000073F000-memory.dmp

    Filesize

    3.2MB

  • memory/4544-64-0x0000000000400000-0x000000000073F000-memory.dmp

    Filesize

    3.2MB