Analysis

  • max time kernel
    146s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240508-en
  • resource tags

    arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    23-05-2024 06:06

General

  • Target

    edc3373a5f607d11d498e86367b3c341cd565109cae42ad1b6049486800b7086.exe

  • Size

    4.6MB

  • MD5

    376cb55898e8e7db7bb6b266a255fba9

  • SHA1

    c206c9a5423f591f4b9a44309a04d3a8b15b452c

  • SHA256

    edc3373a5f607d11d498e86367b3c341cd565109cae42ad1b6049486800b7086

  • SHA512

    711732798526ce0934a7e171c41f7717e8dac139760d766692ccb529918e252200ee86ed24f0ec23c5a2932d7664f3f4765cf4fed5f8e48f12fdc421cf268105

  • SSDEEP

    98304:mVFdzgMlvdfxNvBo58mWZ56PbEysBC++fw7/R2AdbJRDw:w5VdvvBoChWbEyY+oLgAdbJRDw

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\edc3373a5f607d11d498e86367b3c341cd565109cae42ad1b6049486800b7086.exe
    "C:\Users\Admin\AppData\Local\Temp\edc3373a5f607d11d498e86367b3c341cd565109cae42ad1b6049486800b7086.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2836
    • C:\Users\Admin\AppData\Local\Temp\is-QLFFV.tmp\edc3373a5f607d11d498e86367b3c341cd565109cae42ad1b6049486800b7086.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-QLFFV.tmp\edc3373a5f607d11d498e86367b3c341cd565109cae42ad1b6049486800b7086.tmp" /SL5="$40204,4552424,54272,C:\Users\Admin\AppData\Local\Temp\edc3373a5f607d11d498e86367b3c341cd565109cae42ad1b6049486800b7086.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:3180
      • C:\Users\Admin\AppData\Local\CyberSound AudioDirector\cybersoundaudiodirector.exe
        "C:\Users\Admin\AppData\Local\CyberSound AudioDirector\cybersoundaudiodirector.exe" -i
        3⤵
        • Executes dropped EXE
        PID:5016
      • C:\Users\Admin\AppData\Local\CyberSound AudioDirector\cybersoundaudiodirector.exe
        "C:\Users\Admin\AppData\Local\CyberSound AudioDirector\cybersoundaudiodirector.exe" -s
        3⤵
        • Executes dropped EXE
        PID:2596

Network

MITRE ATT&CK Matrix ATT&CK v13

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\CyberSound AudioDirector\cybersoundaudiodirector.exe
    Filesize

    2.5MB

    MD5

    07974c9ca4b3e17cef10909b4121e0d1

    SHA1

    c8d4c3d635d102c7d01531689a631d6e91f27302

    SHA256

    4a5532d22539bd1013fddf116249a2fa33d2505e5a2e251e53843d652503a87f

    SHA512

    e22b3f2cd9b0d9ef7c96717cba35ed4dfe4a6fa3b1b10b81bc0e5b7d2470245469fbe8ce4cc40e31f49edd624fa7c2ffbef08ea6f48f61a43a666f6cb4d6f177

  • C:\Users\Admin\AppData\Local\Temp\is-887RD.tmp\_isetup\_iscrypt.dll
    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-QLFFV.tmp\edc3373a5f607d11d498e86367b3c341cd565109cae42ad1b6049486800b7086.tmp
    Filesize

    680KB

    MD5

    2802793cff587bb6eeb2ef3767bae465

    SHA1

    8bfd261fd7d5c1bf3627b867815ad7eac56060ea

    SHA256

    639cdf357b7509177fa927cf90da7fb469a9134abbdb98a8b8f41b5e9866d53a

    SHA512

    27de32fa20bb2bbd8c18d2d69cc8bf0daf57d747d0cc09d98d29083ee34133d4dc0c029b8c823e47e96477ab6a915685d4832965838be68a63a00ac7b086adb1

  • memory/2596-96-0x0000000000400000-0x000000000068B000-memory.dmp
    Filesize

    2.5MB

  • memory/2596-80-0x0000000000400000-0x000000000068B000-memory.dmp
    Filesize

    2.5MB

  • memory/2596-117-0x0000000000400000-0x000000000068B000-memory.dmp
    Filesize

    2.5MB

  • memory/2596-114-0x0000000000400000-0x000000000068B000-memory.dmp
    Filesize

    2.5MB

  • memory/2596-109-0x00000000009D0000-0x0000000000A72000-memory.dmp
    Filesize

    648KB

  • memory/2596-110-0x00000000009D0000-0x0000000000A72000-memory.dmp
    Filesize

    648KB

  • memory/2596-108-0x0000000000400000-0x000000000068B000-memory.dmp
    Filesize

    2.5MB

  • memory/2596-68-0x0000000000400000-0x000000000068B000-memory.dmp
    Filesize

    2.5MB

  • memory/2596-105-0x0000000000400000-0x000000000068B000-memory.dmp
    Filesize

    2.5MB

  • memory/2596-102-0x0000000000400000-0x000000000068B000-memory.dmp
    Filesize

    2.5MB

  • memory/2596-71-0x0000000000400000-0x000000000068B000-memory.dmp
    Filesize

    2.5MB

  • memory/2596-74-0x0000000000400000-0x000000000068B000-memory.dmp
    Filesize

    2.5MB

  • memory/2596-77-0x0000000000400000-0x000000000068B000-memory.dmp
    Filesize

    2.5MB

  • memory/2596-99-0x0000000000400000-0x000000000068B000-memory.dmp
    Filesize

    2.5MB

  • memory/2596-83-0x0000000000400000-0x000000000068B000-memory.dmp
    Filesize

    2.5MB

  • memory/2596-86-0x00000000009D0000-0x0000000000A72000-memory.dmp
    Filesize

    648KB

  • memory/2596-88-0x0000000000400000-0x000000000068B000-memory.dmp
    Filesize

    2.5MB

  • memory/2596-93-0x0000000000400000-0x000000000068B000-memory.dmp
    Filesize

    2.5MB

  • memory/2836-0-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/2836-69-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/2836-2-0x0000000000401000-0x000000000040B000-memory.dmp
    Filesize

    40KB

  • memory/3180-11-0x0000000000400000-0x00000000004BA000-memory.dmp
    Filesize

    744KB

  • memory/3180-70-0x0000000000400000-0x00000000004BA000-memory.dmp
    Filesize

    744KB

  • memory/5016-63-0x0000000000400000-0x000000000068B000-memory.dmp
    Filesize

    2.5MB

  • memory/5016-65-0x0000000000400000-0x000000000068B000-memory.dmp
    Filesize

    2.5MB

  • memory/5016-60-0x0000000000400000-0x000000000068B000-memory.dmp
    Filesize

    2.5MB

  • memory/5016-59-0x0000000000400000-0x000000000068B000-memory.dmp
    Filesize

    2.5MB