Analysis

  • max time kernel
    292s
  • max time network
    299s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    13/06/2024, 23:25

General

  • Target
    80a30a05e6a5146a078ba7b3edb6d30ec1c8f6d6b858a2e332ce88244d598a46.exe
  • Size 4.8MB
  • Sample240613-3ee1jsvfkh
  • SHA256 80a30a05e6a5146a078ba7b3edb6d30ec1c8f6d6b858a2e332ce88244d598a46
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • socks5systemz

C2
  • cciucvz.net

  • http://cciucvz.net/search/?q=67e28dd86809f27b415ba51b7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa1de8889b5e4fa9281ae978a771ea771795af8e05c645db22f31dfe339426fa11a366c350adb719a9577e55b8603e983a608ff712c2ee949233

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.

  • 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\80a30a05e6a5146a078ba7b3edb6d30ec1c8f6d6b858a2e332ce88244d598a46.exe
    "C:\Users\Admin\AppData\Local\Temp\80a30a05e6a5146a078ba7b3edb6d30ec1c8f6d6b858a2e332ce88244d598a46.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1448
    • C:\Users\Admin\AppData\Local\Temp\is-DB8IA.tmp\80a30a05e6a5146a078ba7b3edb6d30ec1c8f6d6b858a2e332ce88244d598a46.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-DB8IA.tmp\80a30a05e6a5146a078ba7b3edb6d30ec1c8f6d6b858a2e332ce88244d598a46.tmp" /SL5="$120080,4821065,54272,C:\Users\Admin\AppData\Local\Temp\80a30a05e6a5146a078ba7b3edb6d30ec1c8f6d6b858a2e332ce88244d598a46.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2672
      • C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist.exe
        "C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist.exe" -i
        3⤵
        • Executes dropped EXE
        PID:4876
      • C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist.exe
        "C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist.exe" -s
        3⤵
        • Executes dropped EXE
        PID:3712

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        moonvoiceassist.exe

        • Path C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist.exe
        • Size 3.2MB
        • SHA256 5d5cbb8674eeceebda7e034d1b203865d9b955e6437284514d501edabf4177c2
        • MD5 SHA1 SHA512 SSDEEP

        80a30a05e6a5146a078ba7b3edb6d30ec1c8f6d6b858a2e332ce88244d598a46.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\is-DB8IA.tmp\80a30a05e6a5146a078ba7b3edb6d30ec1c8f6d6b858a2e332ce88244d598a46.tmp
        • Size 680KB
        • SHA256 65b94a7e8d0e19c89c871b49457934d80365d9a9c2ff781509a1cb68421da552
        • MD5 SHA1 SHA512 SSDEEP

        _iscrypt.dll

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

        memory/1448-68-0x0000000000400000-0x0000000000414000-memory.dmp

        memory/1448-3-0x0000000000401000-0x000000000040B000-memory.dmp

        memory/1448-0-0x0000000000400000-0x0000000000414000-memory.dmp

        memory/2672-13-0x0000000000400000-0x00000000004BA000-memory.dmp

        memory/2672-69-0x0000000000400000-0x00000000004BA000-memory.dmp

        memory/3712-107-0x0000000000400000-0x000000000072E000-memory.dmp

        memory/3712-92-0x0000000000400000-0x000000000072E000-memory.dmp

        memory/3712-131-0x0000000000400000-0x000000000072E000-memory.dmp

        memory/3712-126-0x0000000000400000-0x000000000072E000-memory.dmp

        memory/3712-70-0x0000000000400000-0x000000000072E000-memory.dmp

        memory/3712-73-0x0000000000400000-0x000000000072E000-memory.dmp

        memory/3712-76-0x0000000000400000-0x000000000072E000-memory.dmp

        memory/3712-79-0x0000000000400000-0x000000000072E000-memory.dmp

        memory/3712-82-0x0000000000400000-0x000000000072E000-memory.dmp

        memory/3712-85-0x00000000009A0000-0x0000000000A42000-memory.dmp

        memory/3712-87-0x0000000000400000-0x000000000072E000-memory.dmp

        memory/3712-67-0x0000000000400000-0x000000000072E000-memory.dmp

        memory/3712-95-0x0000000000400000-0x000000000072E000-memory.dmp

        memory/3712-98-0x0000000000400000-0x000000000072E000-memory.dmp

        memory/3712-101-0x0000000000400000-0x000000000072E000-memory.dmp

        memory/3712-104-0x0000000000400000-0x000000000072E000-memory.dmp

        memory/3712-123-0x0000000000400000-0x000000000072E000-memory.dmp

        memory/3712-111-0x0000000000400000-0x000000000072E000-memory.dmp

        memory/3712-114-0x0000000000400000-0x000000000072E000-memory.dmp

        memory/3712-117-0x0000000000400000-0x000000000072E000-memory.dmp

        memory/3712-120-0x0000000000400000-0x000000000072E000-memory.dmp

        memory/4876-59-0x0000000000400000-0x000000000072E000-memory.dmp

        memory/4876-60-0x0000000000400000-0x000000000072E000-memory.dmp

        memory/4876-64-0x0000000000400000-0x000000000072E000-memory.dmp