Analysis

  • max time kernel
    141s
  • max time network
    126s
  • 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, 03:53

General

  • Target
    e540a5ea1c467a123bc072ace7f3d61e6b5284330beea11590d3f16d83c71365.exe
  • Size 2.0MB
  • Sample240324-ef2nyahd62
  • SHA256 e540a5ea1c467a123bc072ace7f3d61e6b5284330beea11590d3f16d83c71365
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • socks5systemz

C2
  • http://ckcujti.net/search/?q=67e28dd83e5cf579400faa1d7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a471ea771795af8e05c647db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe13c5ed919338

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 WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e540a5ea1c467a123bc072ace7f3d61e6b5284330beea11590d3f16d83c71365.exe
    "C:\Users\Admin\AppData\Local\Temp\e540a5ea1c467a123bc072ace7f3d61e6b5284330beea11590d3f16d83c71365.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3568
    • C:\Users\Admin\AppData\Local\Temp\is-HJL2U.tmp\e540a5ea1c467a123bc072ace7f3d61e6b5284330beea11590d3f16d83c71365.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-HJL2U.tmp\e540a5ea1c467a123bc072ace7f3d61e6b5284330beea11590d3f16d83c71365.tmp" /SL5="$70050,1694148,54272,C:\Users\Admin\AppData\Local\Temp\e540a5ea1c467a123bc072ace7f3d61e6b5284330beea11590d3f16d83c71365.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:3448
      • 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:4008
      • 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:2044

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        _iscrypt.dll

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

        e540a5ea1c467a123bc072ace7f3d61e6b5284330beea11590d3f16d83c71365.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\is-HJL2U.tmp\e540a5ea1c467a123bc072ace7f3d61e6b5284330beea11590d3f16d83c71365.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 6168fb2551378ee2be3aed5f3085bb6ce4b8e8a49198968f0ffbcc930fcc5aee
        • MD5 SHA1 SHA512 SSDEEP

        memory/2044-77-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/2044-78-0x0000000000900000-0x00000000009A2000-memory.dmp

        memory/2044-97-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/2044-94-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/2044-90-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/2044-87-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/2044-84-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/2044-46-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/2044-81-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/2044-63-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/2044-49-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/2044-74-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/2044-53-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/2044-54-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/2044-60-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/2044-69-0x0000000000900000-0x00000000009A2000-memory.dmp

        memory/2044-57-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/2044-66-0x0000000000900000-0x00000000009A2000-memory.dmp

        memory/2044-67-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/3448-7-0x0000000002310000-0x0000000002311000-memory.dmp

        memory/3448-50-0x0000000002310000-0x0000000002311000-memory.dmp

        memory/3448-48-0x0000000000400000-0x00000000004B8000-memory.dmp

        memory/3568-0-0x0000000000400000-0x0000000000414000-memory.dmp

        memory/3568-47-0x0000000000400000-0x0000000000414000-memory.dmp

        memory/3568-2-0x0000000000400000-0x0000000000414000-memory.dmp

        memory/4008-39-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/4008-42-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/4008-43-0x0000000000400000-0x000000000060E000-memory.dmp

        memory/4008-38-0x0000000000400000-0x000000000060E000-memory.dmp