Analysis

  • max time kernel
    142s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-06-2024 16:43

General

  • Target

    9b6a3eb67f666120885a27717f6998d6e4175343dbde8c8327a1e5619ed0540c.exe

  • Size

    4.8MB

  • MD5

    6a20cd124e3422b93ef68806e86f495e

  • SHA1

    72eca2554bb61aeb120717f6895879fb7447a7cc

  • SHA256

    9b6a3eb67f666120885a27717f6998d6e4175343dbde8c8327a1e5619ed0540c

  • SHA512

    e9e887687731ffb771bfb961ee7f0888a41aa3062642fc5ceb46ae355a2e8ec4f86a51e56af8552dfe781d0cc469d648d9ba4a2bdc9f7c7f360fd68f8b2c1c57

  • SSDEEP

    98304:mDf3TjTpKsqbnL619YwEJeAsfHzLT0na4JDScFTpPK8xh9Z+DIQ6:WTjtKsqbu19Yozv0na4kWn9ZsIh

Malware Config

Extracted

Family

socks5systemz

C2

bnafhdf.com

http://bnafhdf.com/search/?q=67e28dd86f08f27d120eff4b7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa1fe8889b5e4fa9281ae978f271ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ff613c4e8919e3c

http://bnafhdf.com/search/?q=67e28dd86f08f27d120eff4b7c27d78406abdd88be4b12eab517aa5c96bd86e9968f44875a8bbc896c58e713bc90c94a36b5281fc235a925ed3e51d6bd974a95129070b616e96cc92be510b866db52b2e34aec4c2b14a82966836f23d7f210c7ee9c983fca6b9211

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\9b6a3eb67f666120885a27717f6998d6e4175343dbde8c8327a1e5619ed0540c.exe
    "C:\Users\Admin\AppData\Local\Temp\9b6a3eb67f666120885a27717f6998d6e4175343dbde8c8327a1e5619ed0540c.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:748
    • C:\Users\Admin\AppData\Local\Temp\is-AQGJK.tmp\9b6a3eb67f666120885a27717f6998d6e4175343dbde8c8327a1e5619ed0540c.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-AQGJK.tmp\9b6a3eb67f666120885a27717f6998d6e4175343dbde8c8327a1e5619ed0540c.tmp" /SL5="$700EC,4768713,54272,C:\Users\Admin\AppData\Local\Temp\9b6a3eb67f666120885a27717f6998d6e4175343dbde8c8327a1e5619ed0540c.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:892
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:2664
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:3144

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\is-2KPHL.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-AQGJK.tmp\9b6a3eb67f666120885a27717f6998d6e4175343dbde8c8327a1e5619ed0540c.tmp

    Filesize

    680KB

    MD5

    1eee4412e30594991e3501c1ac6c47bb

    SHA1

    d532da40e6cfbb15dbdb272f3186111cdbdb6cad

    SHA256

    819409a928f8dc308b38d03f76e58c448bb3e9c323f77e6b6e0a17553f0a8916

    SHA512

    cbba2bd056ceb17c75ddead7b10612f0272c64cd385bab3eb2973d4ddbe85c283fb76f045f1090487775f243918d2335bdef5f01e0f7c1cd447af4dfcab670bc

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

    Filesize

    2.8MB

    MD5

    bcabd83e08fce61ade515dd2a40f0f0c

    SHA1

    0eb3348c2f384b802ed2294f76a4cdecba811804

    SHA256

    7e21c8fd9ec92c3259d7f552a4e9a9d93334cb59500990c5fd51f62d846d8788

    SHA512

    c5b29320669a882321c4bddf1b4490dc17fd85c67675bcbfb4a3baec5b9dc1e9b6a15dd62aa4e5b1c3b148bcf7bf7f3eb1ae4993137550032c1bc974ce14972e

  • memory/748-3-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/748-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/748-69-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/892-70-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/892-10-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2664-59-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2664-60-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2664-65-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2664-64-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3144-74-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3144-96-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3144-67-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3144-77-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3144-80-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3144-83-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3144-86-0x0000000000950000-0x00000000009F2000-memory.dmp

    Filesize

    648KB

  • memory/3144-88-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3144-93-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3144-71-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3144-99-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3144-102-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3144-105-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3144-108-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3144-110-0x0000000000950000-0x00000000009F2000-memory.dmp

    Filesize

    648KB

  • memory/3144-109-0x0000000000950000-0x00000000009F2000-memory.dmp

    Filesize

    648KB

  • memory/3144-114-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3144-117-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB