Analysis

  • max time kernel
    146s
  • max time network
    149s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240508-en
  • resource tags

    arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    10/06/2024, 04:31

General

  • Target
    11042e8961ea62fa305f4af0e04d74557992a92d0b403dcfa46524e54d31de59.exe
  • Size 4.6MB
  • Sample240610-e5qmzacg73
  • SHA256 11042e8961ea62fa305f4af0e04d74557992a92d0b403dcfa46524e54d31de59
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • socks5systemz

C2
  • dircjib.info

  • http://dircjib.info/search/?q=67e28dd8645cf52d405fae1d7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a071ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff818c9ec9c9c3e

  • http://dircjib.info/search/?q=67e28dd8645cf52d405fae1d7c27d78406abdd88be4b12eab517aa5c96bd86ec9d8f45895a8bbc896c58e713bc90c91936b5281fc235a925ed3e03d6bd974a95129070b616e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee929332ce669013

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\11042e8961ea62fa305f4af0e04d74557992a92d0b403dcfa46524e54d31de59.exe
    "C:\Users\Admin\AppData\Local\Temp\11042e8961ea62fa305f4af0e04d74557992a92d0b403dcfa46524e54d31de59.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4924
    • C:\Users\Admin\AppData\Local\Temp\is-Q2QGG.tmp\11042e8961ea62fa305f4af0e04d74557992a92d0b403dcfa46524e54d31de59.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-Q2QGG.tmp\11042e8961ea62fa305f4af0e04d74557992a92d0b403dcfa46524e54d31de59.tmp" /SL5="$70240,4563832,54272,C:\Users\Admin\AppData\Local\Temp\11042e8961ea62fa305f4af0e04d74557992a92d0b403dcfa46524e54d31de59.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4560
      • C:\Users\Admin\AppData\Local\Linux MultiMedia Studio\linuxmultiMediastudio.exe
        "C:\Users\Admin\AppData\Local\Linux MultiMedia Studio\linuxmultiMediastudio.exe" -i
        3⤵
        • Executes dropped EXE
        PID:2352
      • C:\Users\Admin\AppData\Local\Linux MultiMedia Studio\linuxmultiMediastudio.exe
        "C:\Users\Admin\AppData\Local\Linux MultiMedia Studio\linuxmultiMediastudio.exe" -s
        3⤵
        • Executes dropped EXE
        PID:4652

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        linuxmultiMediastudio.exe

        • Path C:\Users\Admin\AppData\Local\Linux MultiMedia Studio\linuxmultiMediastudio.exe
        • Size 2.9MB
        • SHA256 00c564e89f724534ffffb8251d9c4fc7fef2c68a51711409a97427028a015c0c
        • MD5 SHA1 SHA512 SSDEEP

        _iscrypt.dll

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

        11042e8961ea62fa305f4af0e04d74557992a92d0b403dcfa46524e54d31de59.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\is-Q2QGG.tmp\11042e8961ea62fa305f4af0e04d74557992a92d0b403dcfa46524e54d31de59.tmp
        • Size 680KB
        • SHA256 8300af7e7e4c4e3771c161f2a609e8d0a4ae0de3e49fd398a24a1decdf6b4941
        • MD5 SHA1 SHA512 SSDEEP

        memory/2352-59-0x0000000000400000-0x00000000006E9000-memory.dmp

        memory/2352-60-0x0000000000400000-0x00000000006E9000-memory.dmp

        memory/2352-65-0x0000000000400000-0x00000000006E9000-memory.dmp

        memory/2352-63-0x0000000000400000-0x00000000006E9000-memory.dmp

        memory/4560-71-0x0000000000400000-0x00000000004BA000-memory.dmp

        memory/4560-16-0x0000000000400000-0x00000000004BA000-memory.dmp

        memory/4652-76-0x0000000000400000-0x00000000006E9000-memory.dmp

        memory/4652-88-0x0000000000920000-0x00000000009C2000-memory.dmp

        memory/4652-69-0x0000000000400000-0x00000000006E9000-memory.dmp

        memory/4652-121-0x0000000000400000-0x00000000006E9000-memory.dmp

        memory/4652-118-0x0000000000400000-0x00000000006E9000-memory.dmp

        memory/4652-72-0x0000000000400000-0x00000000006E9000-memory.dmp

        memory/4652-75-0x0000000000400000-0x00000000006E9000-memory.dmp

        memory/4652-114-0x0000000000920000-0x00000000009C2000-memory.dmp

        memory/4652-79-0x0000000000400000-0x00000000006E9000-memory.dmp

        memory/4652-82-0x0000000000400000-0x00000000006E9000-memory.dmp

        memory/4652-85-0x0000000000400000-0x00000000006E9000-memory.dmp

        memory/4652-67-0x0000000000400000-0x00000000006E9000-memory.dmp

        memory/4652-91-0x0000000000400000-0x00000000006E9000-memory.dmp

        memory/4652-96-0x0000000000400000-0x00000000006E9000-memory.dmp

        memory/4652-99-0x0000000000400000-0x00000000006E9000-memory.dmp

        memory/4652-100-0x0000000000400000-0x00000000006E9000-memory.dmp

        memory/4652-103-0x0000000000400000-0x00000000006E9000-memory.dmp

        memory/4652-106-0x0000000000400000-0x00000000006E9000-memory.dmp

        memory/4652-109-0x0000000000400000-0x00000000006E9000-memory.dmp

        memory/4652-112-0x0000000000400000-0x00000000006E9000-memory.dmp

        memory/4652-113-0x0000000000920000-0x00000000009C2000-memory.dmp

        memory/4924-2-0x0000000000401000-0x000000000040B000-memory.dmp

        memory/4924-0-0x0000000000400000-0x0000000000414000-memory.dmp

        memory/4924-70-0x0000000000400000-0x0000000000414000-memory.dmp