Analysis

  • max time kernel
    147s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-06-2024 20:55

General

  • Target

    a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.exe

  • Size

    4.8MB

  • MD5

    20b715255948a66e9c034bbb86e34e24

  • SHA1

    295c9b4a35dd22c10cf14b1b80939fd3bf8a6273

  • SHA256

    a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd

  • SHA512

    a71aaf3ac80420761cdf0a75cdd4cd636f814540ca1155a17f7e22b2d68d6e9c48c61d1ac865aa90af5471592745deefb170a3459e7a5f52faae8a03bef91ca2

  • SSDEEP

    98304:mdvtdkxcJjbuUdWlL0NAwBrnx7h0nI4KcNNcAyIn0dn1Ufizm3ASzT:kvXkxcuUd6qjBrnAnnUAyIDhASX

Malware Config

Extracted

Family

socks5systemz

C2

bfcewno.com

Signatures

  • Detect Socks5Systemz Payload 1 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 IoCs
  • Unexpected DNS network traffic destination 3 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\a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.exe
    "C:\Users\Admin\AppData\Local\Temp\a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3524
    • C:\Users\Admin\AppData\Local\Temp\is-SRS3S.tmp\a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-SRS3S.tmp\a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.tmp" /SL5="$60064,4735694,54272,C:\Users\Admin\AppData\Local\Temp\a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2800
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:1208
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:1320

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\is-8R4MT.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-SRS3S.tmp\a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.tmp

    Filesize

    680KB

    MD5

    fe8159895c04f572c0d4ff483fde0a81

    SHA1

    7b5cd749bb4ac1e5a57f1b11cd33857d5d2514ef

    SHA256

    36e684553464cedcab2f2766d44d135206af42c396379a98ac45e476517fb0e6

    SHA512

    ccaa6b1e6229f93fe5a087d1c3c711402f780521a403617ab12ee32844f3f1ea74e9f103cad76b0d1a25bee0cb2e22bb393c685844ae714777b6e3e54ce79392

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

    Filesize

    2.8MB

    MD5

    94b4d42bcf15988d59b2c3f38c3b158e

    SHA1

    595c58eb2ef0e1d8f869cd95f21b2adf0628e335

    SHA256

    0dd841df41a36a20210c5d24199578e423d91623691dd6875e3a2b08fcdecd91

    SHA512

    18d6132d8aa400a2ced3494a5007546beb86fa52c52eac65acf96ae3aae197a214dea936a292c284e58b0b77f27e5e11a90cd158834f7f5caadbb8f49974a6ef

  • memory/1208-60-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/1208-63-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/1208-65-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/1208-59-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/1320-74-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/1320-86-0x0000000000810000-0x00000000008B2000-memory.dmp

    Filesize

    648KB

  • memory/1320-114-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/1320-68-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/1320-111-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/1320-108-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/1320-71-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/1320-105-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/1320-77-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/1320-80-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/1320-83-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/1320-102-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/1320-88-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/1320-93-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/1320-96-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/1320-99-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2800-16-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2800-70-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/3524-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/3524-69-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/3524-2-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB