Analysis

  • max time kernel
    142s
  • max time network
    142s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240802-en
  • resource tags

    arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    02/08/2024, 20:17

General

  • Target

    09898f95032e451238e4936a95cc2b8797418478e558dd4bae1da566ba751bcf.exe

  • Size

    3.8MB

  • MD5

    48a8503cdfc8bc40daa6a57b023daaa5

  • SHA1

    b3e57e97d6846c21d14d0a8ff54d9c08fbd8fb33

  • SHA256

    09898f95032e451238e4936a95cc2b8797418478e558dd4bae1da566ba751bcf

  • SHA512

    14d738a6b387cf06dee1c6cb0fcddba92ec7622ec2f460bb1cc2ea3da01b3e2201814c1eeba7fb310c0e47eae5cd1a42ed35c8d3a48e3caaa8231c6a3c2bcdc2

  • SSDEEP

    98304:Nd3olS2xU5S17ss/YvvKoPRkiBN429KIwTlPSGk8QbE3dK:j3Y2GNY/k2K/TlU8QA4

Malware Config

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 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.

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\09898f95032e451238e4936a95cc2b8797418478e558dd4bae1da566ba751bcf.exe
    "C:\Users\Admin\AppData\Local\Temp\09898f95032e451238e4936a95cc2b8797418478e558dd4bae1da566ba751bcf.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4820
    • C:\Users\Admin\AppData\Local\Temp\is-FNE8P.tmp\09898f95032e451238e4936a95cc2b8797418478e558dd4bae1da566ba751bcf.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-FNE8P.tmp\09898f95032e451238e4936a95cc2b8797418478e558dd4bae1da566ba751bcf.tmp" /SL5="$802D0,3740494,54272,C:\Users\Admin\AppData\Local\Temp\09898f95032e451238e4936a95cc2b8797418478e558dd4bae1da566ba751bcf.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4736
      • C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe
        "C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe" -i
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:2020
      • C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe
        "C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe" -s
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:2288

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe

          Filesize

          4.5MB

          MD5

          1b6fc0635012a62a6e4f6516779adbc6

          SHA1

          918ea639a97f8f7550e6c6194db32349b5de7e47

          SHA256

          9694c12c072960399bb3ec9162f37398710aeda03e169972d6cd5166ecb71149

          SHA512

          7c65d5133c6b5778014b10d8c3184f3c3331e9a358d66d4dd52b18b4f50ee81cdd1e27623c933ffb1ef636f02aa197b6cee3625e89727b5fb5150bdd4f8fbd86

        • C:\Users\Admin\AppData\Local\Temp\is-CC6FV.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • C:\Users\Admin\AppData\Local\Temp\is-FNE8P.tmp\09898f95032e451238e4936a95cc2b8797418478e558dd4bae1da566ba751bcf.tmp

          Filesize

          692KB

          MD5

          849bb5c3439284a175f581ec281ca92e

          SHA1

          8bd0737eac1a74de4d62d66911ca7ed9f61cbc0f

          SHA256

          33a8f60e50240aecdbedc45922032025376ecccc0c1acbd44c82f12985e82206

          SHA512

          ac7bd629b6ed2595c6af4ef0737d7d801c8c35ebb4638ec2c19569511157a1543a6fa91d1a15708810865ece1cfb27367480754a7debf716d322d1eb59c5f625

        • memory/2020-52-0x0000000000400000-0x000000000087C000-memory.dmp

          Filesize

          4.5MB

        • memory/2020-56-0x0000000000400000-0x000000000087C000-memory.dmp

          Filesize

          4.5MB

        • memory/2020-55-0x0000000000400000-0x000000000087C000-memory.dmp

          Filesize

          4.5MB

        • memory/2020-53-0x0000000000400000-0x000000000087C000-memory.dmp

          Filesize

          4.5MB

        • memory/2288-63-0x0000000000400000-0x000000000087C000-memory.dmp

          Filesize

          4.5MB

        • memory/2288-90-0x0000000000400000-0x000000000087C000-memory.dmp

          Filesize

          4.5MB

        • memory/2288-109-0x0000000000400000-0x000000000087C000-memory.dmp

          Filesize

          4.5MB

        • memory/2288-58-0x0000000000400000-0x000000000087C000-memory.dmp

          Filesize

          4.5MB

        • memory/2288-60-0x0000000000400000-0x000000000087C000-memory.dmp

          Filesize

          4.5MB

        • memory/2288-106-0x0000000000400000-0x000000000087C000-memory.dmp

          Filesize

          4.5MB

        • memory/2288-102-0x0000000000400000-0x000000000087C000-memory.dmp

          Filesize

          4.5MB

        • memory/2288-99-0x0000000000400000-0x000000000087C000-memory.dmp

          Filesize

          4.5MB

        • memory/2288-66-0x0000000000400000-0x000000000087C000-memory.dmp

          Filesize

          4.5MB

        • memory/2288-67-0x0000000000400000-0x000000000087C000-memory.dmp

          Filesize

          4.5MB

        • memory/2288-70-0x0000000000400000-0x000000000087C000-memory.dmp

          Filesize

          4.5MB

        • memory/2288-73-0x0000000000400000-0x000000000087C000-memory.dmp

          Filesize

          4.5MB

        • memory/2288-76-0x0000000000400000-0x000000000087C000-memory.dmp

          Filesize

          4.5MB

        • memory/2288-79-0x0000000000BA0000-0x0000000000C42000-memory.dmp

          Filesize

          648KB

        • memory/2288-81-0x0000000000400000-0x000000000087C000-memory.dmp

          Filesize

          4.5MB

        • memory/2288-87-0x0000000000400000-0x000000000087C000-memory.dmp

          Filesize

          4.5MB

        • memory/2288-96-0x0000000000400000-0x000000000087C000-memory.dmp

          Filesize

          4.5MB

        • memory/2288-93-0x0000000000400000-0x000000000087C000-memory.dmp

          Filesize

          4.5MB

        • memory/4736-7-0x0000000000400000-0x00000000004BD000-memory.dmp

          Filesize

          756KB

        • memory/4736-62-0x0000000000400000-0x00000000004BD000-memory.dmp

          Filesize

          756KB

        • memory/4820-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4820-61-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4820-2-0x0000000000401000-0x000000000040B000-memory.dmp

          Filesize

          40KB