Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/03/2024, 18:06

General

  • Target
    420c1cc9cd89512c5a3fe4951044a9a2dc6ec158132924097fe96eba32b2f0fa.exe
  • Size 2.2MB
  • Sample240324-wp71rahc7t
  • SHA256 420c1cc9cd89512c5a3fe4951044a9a2dc6ec158132924097fe96eba32b2f0fa
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • socks5systemz

C2
  • http://ejqgktz.ua/search/?q=67e28dd86b5ea42a430af91a7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a771ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ffe12c0ec939d32

  • http://ejqgktz.ua/search/?q=67e28dd86b5ea42a430af91a7c27d78406abdd88be4b12eab517aa5c96bd86eb97854b815a8bbc896c58e713bc90c91936b5281fc235a925ed3e04d6bd974a95129070b616e96cc92be510b866db52b2e34aec4c2b14a82966836f23d7f210c7ee94993bce69911f

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\420c1cc9cd89512c5a3fe4951044a9a2dc6ec158132924097fe96eba32b2f0fa.exe
    "C:\Users\Admin\AppData\Local\Temp\420c1cc9cd89512c5a3fe4951044a9a2dc6ec158132924097fe96eba32b2f0fa.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1028
    • C:\Users\Admin\AppData\Local\Temp\is-11NP4.tmp\420c1cc9cd89512c5a3fe4951044a9a2dc6ec158132924097fe96eba32b2f0fa.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-11NP4.tmp\420c1cc9cd89512c5a3fe4951044a9a2dc6ec158132924097fe96eba32b2f0fa.tmp" /SL5="$12004C,1922762,54272,C:\Users\Admin\AppData\Local\Temp\420c1cc9cd89512c5a3fe4951044a9a2dc6ec158132924097fe96eba32b2f0fa.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2808
      • C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
        "C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe" -i
        3⤵
        • Executes dropped EXE
        PID:452
      • C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
        "C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe" -s
        3⤵
        • Executes dropped EXE
        PID:1436

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        sitefreeedition.exe

        • Path C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
        • Size 2.2MB
        • SHA256 afe43fe927976a2f9cda295af17b504fa33a55278e8b8b191d1f38a8f5b74d40
        • MD5 SHA1 SHA512 SSDEEP

        420c1cc9cd89512c5a3fe4951044a9a2dc6ec158132924097fe96eba32b2f0fa.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\is-11NP4.tmp\420c1cc9cd89512c5a3fe4951044a9a2dc6ec158132924097fe96eba32b2f0fa.tmp
        • Size 677KB
        • SHA256 d3a2c2ce7d70b3b9c30faf3f72bf4ebcdea8f331d6b6cac5dae906327997985d
        • MD5 SHA1 SHA512 SSDEEP

        _iscrypt.dll

        • Path C:\Users\Admin\AppData\Local\Temp\is-DOK4B.tmp\_isetup\_iscrypt.dll
        • Size 2KB
        • SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
        • MD5 SHA1 SHA512

        memory/452-38-0x0000000000400000-0x000000000062C000-memory.dmp

        memory/452-39-0x0000000000400000-0x000000000062C000-memory.dmp

        memory/452-42-0x0000000000400000-0x000000000062C000-memory.dmp

        memory/452-43-0x0000000000400000-0x000000000062C000-memory.dmp

        memory/1028-48-0x0000000000400000-0x0000000000414000-memory.dmp

        memory/1028-2-0x0000000000400000-0x0000000000414000-memory.dmp

        memory/1028-0-0x0000000000400000-0x0000000000414000-memory.dmp

        memory/1436-54-0x0000000000400000-0x000000000062C000-memory.dmp

        memory/1436-81-0x0000000000400000-0x000000000062C000-memory.dmp

        memory/1436-46-0x0000000000400000-0x000000000062C000-memory.dmp

        memory/1436-99-0x0000000000400000-0x000000000062C000-memory.dmp

        memory/1436-50-0x0000000000400000-0x000000000062C000-memory.dmp

        memory/1436-96-0x0000000000400000-0x000000000062C000-memory.dmp

        memory/1436-92-0x00000000007E0000-0x0000000000882000-memory.dmp

        memory/1436-57-0x0000000000400000-0x000000000062C000-memory.dmp

        memory/1436-60-0x0000000000400000-0x000000000062C000-memory.dmp

        memory/1436-63-0x0000000000400000-0x000000000062C000-memory.dmp

        memory/1436-64-0x00000000007E0000-0x0000000000882000-memory.dmp

        memory/1436-68-0x0000000000400000-0x000000000062C000-memory.dmp

        memory/1436-69-0x00000000007E0000-0x0000000000882000-memory.dmp

        memory/1436-74-0x0000000000400000-0x000000000062C000-memory.dmp

        memory/1436-77-0x0000000000400000-0x000000000062C000-memory.dmp

        memory/1436-78-0x00000000007E0000-0x0000000000882000-memory.dmp

        memory/1436-47-0x0000000000400000-0x000000000062C000-memory.dmp

        memory/1436-84-0x0000000000400000-0x000000000062C000-memory.dmp

        memory/1436-87-0x0000000000400000-0x000000000062C000-memory.dmp

        memory/1436-90-0x0000000000400000-0x000000000062C000-memory.dmp

        memory/1436-91-0x00000000007E0000-0x0000000000882000-memory.dmp

        memory/2808-7-0x0000000002240000-0x0000000002241000-memory.dmp

        memory/2808-51-0x0000000002240000-0x0000000002241000-memory.dmp

        memory/2808-49-0x0000000000400000-0x00000000004B8000-memory.dmp