Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/03/2024, 01:01

General

  • Target

    41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.exe

  • Size

    2.0MB

  • MD5

    0574b31aca7165d0a8ba6ed16e0c8224

  • SHA1

    6b242787348a0d296d3aed84fea8c4884b863916

  • SHA256

    41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60

  • SHA512

    c1e07b9230f35b9b0adbec1a56b55dadba522d100bc5b22ec34ab286fdc2c705b49dc248e65a8dc67f6ae30ef0eeaf5b5116feb547f504a1e77719f20420baa6

  • SSDEEP

    24576:320DPMIe3Ahdm7Gsfdqa1zNSwld+snicYeVCeHZE+yScddwF/+4SSHNGkJR/YaLG:32MMhQh87/1RbticF7BSI7N+O98

Malware Config

Extracted

Family

socks5systemz

C2

http://bxdbmob.com/search/?q=67e28dd86c09f220490efa1c7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ae8889b5e4fa9281ae978fe71ea771795af8e05c642db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ffe12c2e7909e39

Signatures

  • Detect Socks5Systemz Payload 3 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 3 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 WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.exe
    "C:\Users\Admin\AppData\Local\Temp\41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4064
    • C:\Users\Admin\AppData\Local\Temp\is-8K0T7.tmp\41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-8K0T7.tmp\41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.tmp" /SL5="$401CC,1711334,54272,C:\Users\Admin\AppData\Local\Temp\41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1964
      • C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe
        "C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:212
      • C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe
        "C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:4476

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe

          Filesize

          1.8MB

          MD5

          8ade5b51df65ef913b39092d7c4d72a9

          SHA1

          74437251d55eca86819232a1e221b4a8495263e8

          SHA256

          75127b731d22745d3fd9335f9e8e589440e6a3ea4ce325252fc45154cf74a000

          SHA512

          436517193959dd01b678b8feed889f6d557551f2d67368f1f81e040bf67bb7a46d7c750d3cac942566c14b812bf59267d889481c3f0b1081dfeb6dbed2d0e149

        • C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe

          Filesize

          896KB

          MD5

          7906d20d4bb910e4b6bd5bf180a9c7d7

          SHA1

          6df5e9b6319a3f3e93f89901a8f3eca64151a598

          SHA256

          f2025864c0354c23db2e490a7838505c60395290e9ea8b7ba489734da8166426

          SHA512

          49a64c4c9ca8944fc192550c236298520b401ad53d33cbe28e5f4aaccf2610665b5a458c1faca5cbff476bf709b1cddea9a2d3becdf187e8f29afa9ce751164b

        • C:\Users\Admin\AppData\Local\Temp\is-5D1CE.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • C:\Users\Admin\AppData\Local\Temp\is-5D1CE.tmp\_isetup\_isdecmp.dll

          Filesize

          32KB

          MD5

          b6f11a0ab7715f570f45900a1fe84732

          SHA1

          77b1201e535445af5ea94c1b03c0a1c34d67a77b

          SHA256

          e47dd306a9854599f02bc1b07ca6dfbd5220f8a1352faa9616d1a327de0bbf67

          SHA512

          78a757e67d21eb7cc95954df15e3eeff56113d6b40fb73f0c5f53304265cc52c79125d6f1b3655b64f9a411711b5b70f746080d708d7c222f4e65bad64b1b771

        • C:\Users\Admin\AppData\Local\Temp\is-8K0T7.tmp\41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.tmp

          Filesize

          677KB

          MD5

          88d7ea648defbc2597fa38ef83112eda

          SHA1

          2bce9acfb1b5e08dc29c695eff12fc80949c6440

          SHA256

          5a53b8bd78b1bbf24136b4d8d8191f503abcc24934626ed6f15bf9f6dee17b68

          SHA512

          050ce971e1f7a4e92d272c9c3c9f96f1214286523b018a75084c76dbebb5f32a717afbd9af9c68b7ad71f738c0a331640a8fe765cb4def90678eae4769b2e66a

        • memory/212-43-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/212-44-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/212-45-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/212-48-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/1964-55-0x0000000000660000-0x0000000000661000-memory.dmp

          Filesize

          4KB

        • memory/1964-6-0x0000000000660000-0x0000000000661000-memory.dmp

          Filesize

          4KB

        • memory/1964-53-0x0000000000400000-0x00000000004B8000-memory.dmp

          Filesize

          736KB

        • memory/4064-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4064-52-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4476-58-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/4476-74-0x00000000007E0000-0x0000000000882000-memory.dmp

          Filesize

          648KB

        • memory/4476-51-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/4476-59-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/4476-62-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/4476-65-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/4476-68-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/4476-70-0x00000000007E0000-0x0000000000882000-memory.dmp

          Filesize

          648KB

        • memory/4476-73-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/4476-54-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/4476-79-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/4476-82-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/4476-83-0x00000000007E0000-0x0000000000882000-memory.dmp

          Filesize

          648KB

        • memory/4476-86-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/4476-89-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/4476-92-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/4476-95-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/4476-99-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/4476-102-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB