Analysis

  • max time kernel
    142s
  • max time network
    136s
  • 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 22:17

General

  • Target

    38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.exe

  • Size

    4.7MB

  • MD5

    dbedcaea3700022ee9a431e4d8a7a6d0

  • SHA1

    2d31e80959a2b81628537db2f8c82312bfe28a4d

  • SHA256

    38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355

  • SHA512

    45dc7235f4e788df6f686c420c405ea8ec698955765a393d1ebfdf103853c94cf88ef472edbba01829c04cafdb7835768712ad4df27a1468bfac2f67068ed7ea

  • SSDEEP

    98304:mLosKuYEl/+r66A9ha0U8xebM5TSXAOqRv4CN:D4b0r66KhHWGcAOQ48

Malware Config

Extracted

Family

socks5systemz

C2

boifiyj.com

http://boifiyj.com/search/?q=67e28dd86d5ff17c1407ad1a7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ee8889b5e4fa9281ae978f571ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ff613c6e890993b

http://boifiyj.com/search/?q=67e28dd86d5ff17c1407ad1a7c27d78406abdd88be4b12eab517aa5c96bd86ef91804d825a8bbc896c58e713bc90c91b36b5281fc235a925ed3e56d6bd974a95129070b616e96cc92be510b866db52b2e34aec4c2b14a82966836f23d7f210c7ee9c983dca6a9516

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\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.exe
    "C:\Users\Admin\AppData\Local\Temp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:540
    • C:\Users\Admin\AppData\Local\Temp\is-F6DRH.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-F6DRH.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp" /SL5="$80060,4722858,54272,C:\Users\Admin\AppData\Local\Temp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4504
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:1256
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:3988
  • 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=1424,i,6576818814118437872,11004518367271063231,262144 --variations-seed-version --mojo-platform-channel-handle=3948 /prefetch:8
    1⤵
      PID:2080

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\is-6759B.tmp\_isetup\_iscrypt.dll

      Filesize

      2KB

      MD5

      a69559718ab506675e907fe49deb71e9

      SHA1

      bc8f404ffdb1960b50c12ff9413c893b56f2e36f

      SHA256

      2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

      SHA512

      e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

    • C:\Users\Admin\AppData\Local\Temp\is-F6DRH.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp

      Filesize

      680KB

      MD5

      58a22210313f4658cd89a8b89fbe724d

      SHA1

      64564a394418bd0d993cc97c53250bfcee405365

      SHA256

      710a06d600279fe3e2648eac534811fd8445b79714a7970eefb4bfe19b48e5c9

      SHA512

      a7c2c934cd9f99230600bd25078fc5997ac45bf08acdd9cdd3785d3eb0448dfc4fd6b2ae4ca609eb82922b49e4c33bfe88285bccc8de01202b13d1bc36dcebdf

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

      Filesize

      2.8MB

      MD5

      b6483e2c6a048b03a30a053127348311

      SHA1

      97e7a48d992ce63c90a17b9637395e0bbbd1d177

      SHA256

      85bca50c48d17d2ccb74e6a9624e02e5126091b75256a92f5c6194ed7d75acf5

      SHA512

      d8566c42def5e2924fc5cf7c4e4b2f2571e3fc9bb2831bfb12adbeb497e0ffa2f37dc78fc1425cfc9edbe0292dfd26170633c9504e42d25f6616486103a80c42

    • memory/540-69-0x0000000000400000-0x0000000000414000-memory.dmp

      Filesize

      80KB

    • memory/540-3-0x00007FFEBB2B0000-0x00007FFEBB4A5000-memory.dmp

      Filesize

      2.0MB

    • memory/540-0-0x0000000000400000-0x0000000000414000-memory.dmp

      Filesize

      80KB

    • memory/1256-59-0x0000000000400000-0x00000000006C8000-memory.dmp

      Filesize

      2.8MB

    • memory/1256-60-0x0000000000400000-0x00000000006C8000-memory.dmp

      Filesize

      2.8MB

    • memory/1256-63-0x00007FFEBB2B0000-0x00007FFEBB4A5000-memory.dmp

      Filesize

      2.0MB

    • memory/1256-65-0x0000000000400000-0x00000000006C8000-memory.dmp

      Filesize

      2.8MB

    • memory/3988-94-0x0000000000400000-0x00000000006C8000-memory.dmp

      Filesize

      2.8MB

    • memory/3988-109-0x0000000000400000-0x00000000006C8000-memory.dmp

      Filesize

      2.8MB

    • memory/3988-118-0x0000000000400000-0x00000000006C8000-memory.dmp

      Filesize

      2.8MB

    • memory/3988-71-0x0000000000400000-0x00000000006C8000-memory.dmp

      Filesize

      2.8MB

    • memory/3988-115-0x0000000000400000-0x00000000006C8000-memory.dmp

      Filesize

      2.8MB

    • memory/3988-75-0x0000000000400000-0x00000000006C8000-memory.dmp

      Filesize

      2.8MB

    • memory/3988-78-0x0000000000400000-0x00000000006C8000-memory.dmp

      Filesize

      2.8MB

    • memory/3988-81-0x0000000000400000-0x00000000006C8000-memory.dmp

      Filesize

      2.8MB

    • memory/3988-84-0x0000000000400000-0x00000000006C8000-memory.dmp

      Filesize

      2.8MB

    • memory/3988-87-0x0000000000900000-0x00000000009A2000-memory.dmp

      Filesize

      648KB

    • memory/3988-89-0x0000000000400000-0x00000000006C8000-memory.dmp

      Filesize

      2.8MB

    • memory/3988-111-0x0000000000900000-0x00000000009A2000-memory.dmp

      Filesize

      648KB

    • memory/3988-97-0x0000000000400000-0x00000000006C8000-memory.dmp

      Filesize

      2.8MB

    • memory/3988-100-0x0000000000400000-0x00000000006C8000-memory.dmp

      Filesize

      2.8MB

    • memory/3988-103-0x0000000000400000-0x00000000006C8000-memory.dmp

      Filesize

      2.8MB

    • memory/3988-106-0x0000000000400000-0x00000000006C8000-memory.dmp

      Filesize

      2.8MB

    • memory/3988-67-0x0000000000400000-0x00000000006C8000-memory.dmp

      Filesize

      2.8MB

    • memory/3988-110-0x0000000000900000-0x00000000009A2000-memory.dmp

      Filesize

      648KB

    • memory/4504-16-0x00007FFEBB2B0000-0x00007FFEBB4A5000-memory.dmp

      Filesize

      2.0MB

    • memory/4504-72-0x00007FFEBB2B0000-0x00007FFEBB4A5000-memory.dmp

      Filesize

      2.0MB

    • memory/4504-70-0x0000000000400000-0x00000000004BA000-memory.dmp

      Filesize

      744KB