Analysis

  • max time kernel
    137s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-06-2024 01:19

General

  • Target

    5cbd43045b2e4418fb9f6a39aa5da0a5d5e1319b2bc3cc79b50eec9713fb434f.exe

  • Size

    5.0MB

  • MD5

    cbce10895aa435fa2807ee0253ca81bd

  • SHA1

    88e74be5a02a4698d299a452b302068cbfc4aa4b

  • SHA256

    5cbd43045b2e4418fb9f6a39aa5da0a5d5e1319b2bc3cc79b50eec9713fb434f

  • SHA512

    1912f8d8770f1c5f9c946ca1a087f53d5e87d51dd6a934bbeda77af5b361c437cd1caa335e5d03759901ee0e02dc1d17a4acf1c1b09a18ac1aab02e132518927

  • SSDEEP

    98304:mMySNAIcdttL9vzzPH9VbK48HxV1Z8iK9bm6cF/fx7B8t8Hay8jat:v/AImhvzrHPl8H1M9b6/VB8ST8jO

Malware Config

Extracted

Family

socks5systemz

C2

bxuikyk.com

http://bxuikyk.com/search/?q=67e28dd83a5da32a155afd1b7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a271ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ff712c2e7959938

Signatures

  • Detect Socks5Systemz Payload 1 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Detects executables packed with VMProtect. 16 IoCs
  • 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\5cbd43045b2e4418fb9f6a39aa5da0a5d5e1319b2bc3cc79b50eec9713fb434f.exe
    "C:\Users\Admin\AppData\Local\Temp\5cbd43045b2e4418fb9f6a39aa5da0a5d5e1319b2bc3cc79b50eec9713fb434f.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:5064
    • C:\Users\Admin\AppData\Local\Temp\is-HK4K8.tmp\5cbd43045b2e4418fb9f6a39aa5da0a5d5e1319b2bc3cc79b50eec9713fb434f.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-HK4K8.tmp\5cbd43045b2e4418fb9f6a39aa5da0a5d5e1319b2bc3cc79b50eec9713fb434f.tmp" /SL5="$70214,4941426,54272,C:\Users\Admin\AppData\Local\Temp\5cbd43045b2e4418fb9f6a39aa5da0a5d5e1319b2bc3cc79b50eec9713fb434f.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4660
      • C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist32.exe
        "C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:1128
      • C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist32.exe
        "C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:3560
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3948 --field-trial-handle=2656,i,16940681401824032220,151921362336696246,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:376

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist32.exe
      Filesize

      3.2MB

      MD5

      b0f378e6e78681b2a6ddf83bc21337ef

      SHA1

      101bc5784b4930820e06ed3d684dc2dac0897fcc

      SHA256

      b95c8e5a05e89670291994da9d79ecd726791edf0f703619aa26dda91db553c8

      SHA512

      e9791d3bdeaa227cf828d13c258beada6af702a0a14f42b29c2c48862aa5033372724f28da27b69b50b5b1286115b914ce2a2fb894492f70a540b87c70638605

    • C:\Users\Admin\AppData\Local\Temp\is-HK4K8.tmp\5cbd43045b2e4418fb9f6a39aa5da0a5d5e1319b2bc3cc79b50eec9713fb434f.tmp
      Filesize

      680KB

      MD5

      b69bf30e5f252cfcf7d82c84f8374a82

      SHA1

      4730c8a8a06df84e640f6ebc2aaa6f1236405f04

      SHA256

      d84b7d9a290803b0f334562ef81c1048c271d37fb9bc2d819fce473f26cb364b

      SHA512

      278be468edc57b6774c81755b8334eb9084eb683eeedc7d7537e6b6fdc2c104ba5392e98853dcd4e8ae052e7ca92a880b34b10c46096cfc2bc5034a15e46e52a

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

      2KB

      MD5

      a69559718ab506675e907fe49deb71e9

      SHA1

      bc8f404ffdb1960b50c12ff9413c893b56f2e36f

      SHA256

      2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

      SHA512

      e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

    • memory/1128-60-0x0000000000400000-0x0000000000733000-memory.dmp
      Filesize

      3.2MB

    • memory/1128-66-0x0000000000400000-0x0000000000733000-memory.dmp
      Filesize

      3.2MB

    • memory/1128-62-0x0000000000400000-0x0000000000733000-memory.dmp
      Filesize

      3.2MB

    • memory/1128-61-0x0000000000400000-0x0000000000733000-memory.dmp
      Filesize

      3.2MB

    • memory/3560-71-0x0000000000400000-0x0000000000733000-memory.dmp
      Filesize

      3.2MB

    • memory/3560-96-0x0000000000400000-0x0000000000733000-memory.dmp
      Filesize

      3.2MB

    • memory/3560-112-0x0000000000400000-0x0000000000733000-memory.dmp
      Filesize

      3.2MB

    • memory/3560-108-0x0000000000400000-0x0000000000733000-memory.dmp
      Filesize

      3.2MB

    • memory/3560-105-0x0000000000400000-0x0000000000733000-memory.dmp
      Filesize

      3.2MB

    • memory/3560-102-0x0000000000400000-0x0000000000733000-memory.dmp
      Filesize

      3.2MB

    • memory/3560-74-0x0000000000400000-0x0000000000733000-memory.dmp
      Filesize

      3.2MB

    • memory/3560-77-0x0000000000400000-0x0000000000733000-memory.dmp
      Filesize

      3.2MB

    • memory/3560-80-0x0000000000400000-0x0000000000733000-memory.dmp
      Filesize

      3.2MB

    • memory/3560-83-0x0000000000400000-0x0000000000733000-memory.dmp
      Filesize

      3.2MB

    • memory/3560-86-0x0000000000400000-0x0000000000733000-memory.dmp
      Filesize

      3.2MB

    • memory/3560-87-0x0000000000860000-0x0000000000902000-memory.dmp
      Filesize

      648KB

    • memory/3560-93-0x0000000000400000-0x0000000000733000-memory.dmp
      Filesize

      3.2MB

    • memory/3560-99-0x0000000000400000-0x0000000000733000-memory.dmp
      Filesize

      3.2MB

    • memory/4660-69-0x0000000000400000-0x00000000004BA000-memory.dmp
      Filesize

      744KB

    • memory/4660-7-0x0000000000400000-0x00000000004BA000-memory.dmp
      Filesize

      744KB

    • memory/5064-53-0x0000000000400000-0x0000000000414000-memory.dmp
      Filesize

      80KB

    • memory/5064-0-0x0000000000400000-0x0000000000414000-memory.dmp
      Filesize

      80KB

    • memory/5064-2-0x0000000000401000-0x000000000040B000-memory.dmp
      Filesize

      40KB