Analysis

  • max time kernel
    142s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-06-2024 01:52

General

  • Target

    f32fad9ce5cf04d55d2b7bba03f3950afe442be0d458d6b7f309f91e71f42dfe.exe

  • Size

    4.9MB

  • MD5

    b310ac9b897a404f025efe6f3d56755a

  • SHA1

    b9b9b2d41cb09aa5d39248c082ac219727dfe3d3

  • SHA256

    f32fad9ce5cf04d55d2b7bba03f3950afe442be0d458d6b7f309f91e71f42dfe

  • SHA512

    b6ccb85d509ec6eff0f65139625c4db7bf775ed04b6f94a93703a88f4351990177b444b0b3129373702a9135da91a78be5bd1073ff3082f63954b42455283685

  • SSDEEP

    98304:mtQDNbjRcuygy0by4h43lMJs3MwL5e8uRykcH+zoQs6eoOvAGP1elAiRCnp:F5Rc3OrEMJK5gqjQsHouPoeACp

Malware Config

Extracted

Family

socks5systemz

C2

bowxusj.com

http://bowxusj.com/search/?q=67e28dd86d5ff17c1407ad1a7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ee8889b5e4fa9281ae978f571ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ff613c8ef919e3b

http://bowxusj.com/search/?q=67e28dd86d5ff17c1407ad1a7c27d78406abdd88be4b12eab517aa5c96bd86ef91804d825a8bbc896c58e713bc90c91b36b5281fc235a925ed3e56d6bd974a95129070b616e96cc92be510b866db52b2e34aec4c2b14a82966836f23d7f210c7ee9c9833cd6b9216

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\f32fad9ce5cf04d55d2b7bba03f3950afe442be0d458d6b7f309f91e71f42dfe.exe
    "C:\Users\Admin\AppData\Local\Temp\f32fad9ce5cf04d55d2b7bba03f3950afe442be0d458d6b7f309f91e71f42dfe.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:64
    • C:\Users\Admin\AppData\Local\Temp\is-AKQMR.tmp\f32fad9ce5cf04d55d2b7bba03f3950afe442be0d458d6b7f309f91e71f42dfe.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-AKQMR.tmp\f32fad9ce5cf04d55d2b7bba03f3950afe442be0d458d6b7f309f91e71f42dfe.tmp" /SL5="$80068,4913475,54272,C:\Users\Admin\AppData\Local\Temp\f32fad9ce5cf04d55d2b7bba03f3950afe442be0d458d6b7f309f91e71f42dfe.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:1476
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:4652
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:4320
  • 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 --field-trial-handle=3768,i,14486271492189381216,15799931579469722648,262144 --variations-seed-version --mojo-platform-channel-handle=4272 /prefetch:8
    1⤵
      PID:3144

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\is-6HV5R.tmp\_isetup\_iscrypt.dll

      Filesize

      2KB

      MD5

      a69559718ab506675e907fe49deb71e9

      SHA1

      bc8f404ffdb1960b50c12ff9413c893b56f2e36f

      SHA256

      2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

      SHA512

      e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

    • C:\Users\Admin\AppData\Local\Temp\is-AKQMR.tmp\f32fad9ce5cf04d55d2b7bba03f3950afe442be0d458d6b7f309f91e71f42dfe.tmp

      Filesize

      680KB

      MD5

      fc1760e726bc3cd3643815ea2c8077fd

      SHA1

      0e7906081387d1b5ed881d8f1976b4f4f8fefff9

      SHA256

      e5f3254f1c5a55c98357632ab034e3567676c6a6ee7584c4b17bae70427a21f3

      SHA512

      08cb70fb426f043aa86da98d8e90519a0356dfcbbd0259f6cdbcbcdff9dc1e2f70af79d64f7fa9abff665d0d2f3a1f9a8a8f8a3edbd73226a3dc1252651d2b4a

    • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe

      Filesize

      2.9MB

      MD5

      63a60328d83d85c5f44811d22524210c

      SHA1

      e061cf2c01edc8b49ebaa961b9c71145b86120c3

      SHA256

      de29c1ae12c9bb3793f8a7996d85a0bc023b5e35da5401853ac53eeac8624617

      SHA512

      69100bdf70d41771fa3b8d0e39db9d1ef9bf030f6a8bd31b01b1965f9a8099e8f63a6ec2140c60ac9c86c7f66be03b242b117912e2a1437c6c6914e51c408cb1

    • memory/64-69-0x0000000000400000-0x0000000000414000-memory.dmp

      Filesize

      80KB

    • memory/64-3-0x0000000000401000-0x000000000040B000-memory.dmp

      Filesize

      40KB

    • memory/64-0-0x0000000000400000-0x0000000000414000-memory.dmp

      Filesize

      80KB

    • memory/1476-16-0x0000000000400000-0x00000000004BA000-memory.dmp

      Filesize

      744KB

    • memory/1476-70-0x0000000000400000-0x00000000004BA000-memory.dmp

      Filesize

      744KB

    • memory/4320-96-0x0000000000400000-0x00000000006EE000-memory.dmp

      Filesize

      2.9MB

    • memory/4320-88-0x0000000000400000-0x00000000006EE000-memory.dmp

      Filesize

      2.9MB

    • memory/4320-67-0x0000000000400000-0x00000000006EE000-memory.dmp

      Filesize

      2.9MB

    • memory/4320-117-0x0000000000400000-0x00000000006EE000-memory.dmp

      Filesize

      2.9MB

    • memory/4320-114-0x0000000000400000-0x00000000006EE000-memory.dmp

      Filesize

      2.9MB

    • memory/4320-71-0x0000000000400000-0x00000000006EE000-memory.dmp

      Filesize

      2.9MB

    • memory/4320-74-0x0000000000400000-0x00000000006EE000-memory.dmp

      Filesize

      2.9MB

    • memory/4320-77-0x0000000000400000-0x00000000006EE000-memory.dmp

      Filesize

      2.9MB

    • memory/4320-80-0x0000000000400000-0x00000000006EE000-memory.dmp

      Filesize

      2.9MB

    • memory/4320-83-0x0000000000400000-0x00000000006EE000-memory.dmp

      Filesize

      2.9MB

    • memory/4320-86-0x0000000000960000-0x0000000000A02000-memory.dmp

      Filesize

      648KB

    • memory/4320-110-0x0000000000400000-0x00000000006EE000-memory.dmp

      Filesize

      2.9MB

    • memory/4320-93-0x0000000000400000-0x00000000006EE000-memory.dmp

      Filesize

      2.9MB

    • memory/4320-108-0x0000000000960000-0x0000000000A02000-memory.dmp

      Filesize

      648KB

    • memory/4320-99-0x0000000000400000-0x00000000006EE000-memory.dmp

      Filesize

      2.9MB

    • memory/4320-102-0x0000000000400000-0x00000000006EE000-memory.dmp

      Filesize

      2.9MB

    • memory/4320-105-0x0000000000400000-0x00000000006EE000-memory.dmp

      Filesize

      2.9MB

    • memory/4320-109-0x0000000000960000-0x0000000000A02000-memory.dmp

      Filesize

      648KB

    • memory/4652-59-0x0000000000400000-0x00000000006EE000-memory.dmp

      Filesize

      2.9MB

    • memory/4652-65-0x0000000000400000-0x00000000006EE000-memory.dmp

      Filesize

      2.9MB

    • memory/4652-60-0x0000000000400000-0x00000000006EE000-memory.dmp

      Filesize

      2.9MB

    • memory/4652-63-0x0000000000400000-0x00000000006EE000-memory.dmp

      Filesize

      2.9MB