Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240426-en
  • resource tags

    arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    30-05-2024 16:32

General

  • Target

    c4fdc2842b3642a7eecde9628a703c280dfee96efde624b428ab1bcf157b1d4b.exe

  • Size

    5.6MB

  • MD5

    449af8064c672a0d1adccccb3e0b0063

  • SHA1

    e0d2f472defd2ab5ecc900b62a981a8615909e41

  • SHA256

    c4fdc2842b3642a7eecde9628a703c280dfee96efde624b428ab1bcf157b1d4b

  • SHA512

    d0d8b3b4919ca24b549ff31b2c92bd78885904ad8cd73716fd6628aff354342b7e1352d5ba9f3f9a9b67f9e6dd1fb7ee04b8acb2ef2a503825e64f2ae8e047d5

  • SSDEEP

    98304:mX4pXMZp4K+ENDPaj1R1yraIswWic39gtbm+eneHtWXYJ0Y4xZCaPaWC:4kXMZyhENDPSocwWPtyeneHtWXBY4xZu

Malware Config

Signatures

  • Detect Socks5Systemz Payload 3 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 3 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\c4fdc2842b3642a7eecde9628a703c280dfee96efde624b428ab1bcf157b1d4b.exe
    "C:\Users\Admin\AppData\Local\Temp\c4fdc2842b3642a7eecde9628a703c280dfee96efde624b428ab1bcf157b1d4b.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2972
    • C:\Users\Admin\AppData\Local\Temp\is-49TCP.tmp\c4fdc2842b3642a7eecde9628a703c280dfee96efde624b428ab1bcf157b1d4b.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-49TCP.tmp\c4fdc2842b3642a7eecde9628a703c280dfee96efde624b428ab1bcf157b1d4b.tmp" /SL5="$4020C,5624554,54272,C:\Users\Admin\AppData\Local\Temp\c4fdc2842b3642a7eecde9628a703c280dfee96efde624b428ab1bcf157b1d4b.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4168
      • C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
        "C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:4280
      • C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
        "C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:3464

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    3.3MB

    MD5

    4825b2dade50eaf35410ce1df5f8abb9

    SHA1

    5de1c04df7e9939a191f09718960b476e69599b2

    SHA256

    a0afb962a2b35ca01927d08ee6785426de264f55550fae8323b9c1b7b77cc450

    SHA512

    52f3687c33e4b51ca4e1d206a2521406fdffa66a9446974687bbea92cae4b5236964f245af9b882bfdb06e0b8388e8e21a89a48f8885a5239c367e697f7e086c

  • C:\Users\Admin\AppData\Local\Temp\is-49TCP.tmp\c4fdc2842b3642a7eecde9628a703c280dfee96efde624b428ab1bcf157b1d4b.tmp

    Filesize

    680KB

    MD5

    0618c738cf49fa5f045702c69585d459

    SHA1

    c71706644125d08fabf067cbe06030fb9795a2e8

    SHA256

    32d63dc7b012c5855667c4b809b98b42b2a841d38e5350fe7b603b46a74d484e

    SHA512

    bd042294fe9a09b01013d94211cf89ec4c7b1bfec384eb717a25ea864e2c9154ba082b5d9ccc9fd5e04d3b551f7bfdfea5d96d74056e5e27811a9cc4aaecc43a

  • C:\Users\Admin\AppData\Local\Temp\is-HSLO7.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-HSLO7.tmp\_isetup\_isdecmp.dll

    Filesize

    32KB

    MD5

    b6f11a0ab7715f570f45900a1fe84732

    SHA1

    77b1201e535445af5ea94c1b03c0a1c34d67a77b

    SHA256

    e47dd306a9854599f02bc1b07ca6dfbd5220f8a1352faa9616d1a327de0bbf67

    SHA512

    78a757e67d21eb7cc95954df15e3eeff56113d6b40fb73f0c5f53304265cc52c79125d6f1b3655b64f9a411711b5b70f746080d708d7c222f4e65bad64b1b771

  • memory/2972-75-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/2972-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/2972-2-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/3464-107-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3464-92-0x0000000000B20000-0x0000000000BC2000-memory.dmp

    Filesize

    648KB

  • memory/3464-125-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3464-122-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3464-74-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3464-117-0x0000000000B20000-0x0000000000BC2000-memory.dmp

    Filesize

    648KB

  • memory/3464-118-0x0000000000B20000-0x0000000000BC2000-memory.dmp

    Filesize

    648KB

  • memory/3464-77-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3464-79-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3464-81-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3464-84-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3464-87-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3464-90-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3464-116-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3464-96-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3464-101-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3464-104-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3464-113-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3464-110-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/4168-10-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4168-76-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4280-66-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/4280-65-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/4280-70-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/4280-71-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB