Analysis

  • max time kernel
    141s
  • max time network
    127s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240221-en
  • resource tags

    arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    24/03/2024, 04:59

General

  • Target
    d92667921c9f172fe3aded1fbb32189a1b1c29a9cb1af1c4764d51a62a15e869.exe
  • Size 2.0MB
  • Sample240324-fmlfzace71
  • SHA256 d92667921c9f172fe3aded1fbb32189a1b1c29a9cb1af1c4764d51a62a15e869
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • socks5systemz

C2
  • http://bxgovki.com/search/?q=67e28dd8645af52e420aad1d7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ee8889b5e4fa9281ae978a371ea771795af8e05c642db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe13c5e9919833

  • http://bxgovki.com/search/?q=67e28dd8645af52e420aad1d7c27d78406abdd88be4b12eab517aa5c96bd86ef95824a815a8bbc896c58e713bc90c91b36b5281fc235a925ed3e00d6bd974a95129070b611e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee94983ecb6b941e

Signatures

  • Detect Socks5Systemz Payload 5 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 WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d92667921c9f172fe3aded1fbb32189a1b1c29a9cb1af1c4764d51a62a15e869.exe
    "C:\Users\Admin\AppData\Local\Temp\d92667921c9f172fe3aded1fbb32189a1b1c29a9cb1af1c4764d51a62a15e869.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2280
    • C:\Users\Admin\AppData\Local\Temp\is-3BR0B.tmp\d92667921c9f172fe3aded1fbb32189a1b1c29a9cb1af1c4764d51a62a15e869.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-3BR0B.tmp\d92667921c9f172fe3aded1fbb32189a1b1c29a9cb1af1c4764d51a62a15e869.tmp" /SL5="$700D8,1697045,54272,C:\Users\Admin\AppData\Local\Temp\d92667921c9f172fe3aded1fbb32189a1b1c29a9cb1af1c4764d51a62a15e869.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:4888
      • C:\Users\Admin\AppData\Local\Turbo Site Pro\turbositepro.exe
        "C:\Users\Admin\AppData\Local\Turbo Site Pro\turbositepro.exe" -i
        3⤵
        • Executes dropped EXE
        PID:4848
      • C:\Users\Admin\AppData\Local\Turbo Site Pro\turbositepro.exe
        "C:\Users\Admin\AppData\Local\Turbo Site Pro\turbositepro.exe" -s
        3⤵
        • Executes dropped EXE
        PID:1808

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        _iscrypt.dll

        • Path C:\Users\Admin\AppData\Local\Temp\is-00J7H.tmp\_isetup\_iscrypt.dll
        • Size 2KB
        • SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
        • MD5 SHA1 SHA512

        d92667921c9f172fe3aded1fbb32189a1b1c29a9cb1af1c4764d51a62a15e869.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\is-3BR0B.tmp\d92667921c9f172fe3aded1fbb32189a1b1c29a9cb1af1c4764d51a62a15e869.tmp
        • Size 677KB
        • SHA256 74c17ac5c1652ec08524e9bad204d00a525e0a1b9b8e701834110a5862fe01c6
        • MD5 SHA1 SHA512 SSDEEP

        turbositepro.exe

        • Path C:\Users\Admin\AppData\Local\Turbo Site Pro\turbositepro.exe
        • Size 2.0MB
        • SHA256 f4a25a25c07f6e24ba2c593ddc71f93801f1ba8ae80ffbfabc1460985d79a137
        • MD5 SHA1 SHA512 SSDEEP

        turbositepro.exe

        • Path C:\Users\Admin\AppData\Local\Turbo Site Pro\turbositepro.exe
        • Size 1009KB
        • SHA256 59fefd51e132b19762f9fdd031007ce72e546ea3d3c73fb3459f116dfb3363ee
        • MD5 SHA1 SHA512 SSDEEP

        memory/1808-74-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/1808-78-0x0000000000980000-0x0000000000A22000-memory.dmp

        memory/1808-99-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/1808-96-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/1808-92-0x0000000000980000-0x0000000000A22000-memory.dmp

        memory/1808-91-0x0000000000980000-0x0000000000A22000-memory.dmp

        memory/1808-90-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/1808-46-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/1808-87-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/1808-84-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/1808-49-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/1808-81-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/1808-53-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/1808-54-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/1808-57-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/1808-60-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/1808-63-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/1808-65-0x0000000000980000-0x0000000000A22000-memory.dmp

        memory/1808-68-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/1808-69-0x0000000000980000-0x0000000000A22000-memory.dmp

        memory/1808-77-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/2280-0-0x0000000000400000-0x0000000000414000-memory.dmp

        memory/2280-47-0x0000000000400000-0x0000000000414000-memory.dmp

        memory/2280-2-0x0000000000400000-0x0000000000414000-memory.dmp

        memory/4848-43-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/4848-40-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/4848-39-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/4848-38-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/4888-7-0x0000000000760000-0x0000000000761000-memory.dmp

        memory/4888-50-0x0000000000760000-0x0000000000761000-memory.dmp

        memory/4888-48-0x0000000000400000-0x00000000004B8000-memory.dmp