Analysis

  • max time kernel
    148s
  • max time network
    154s
  • 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, 15:00

General

  • Target

    74c8cd8ed8ea31c6c767410eb34802743933c4ffdba348f8beb4bb6d07ff0d91.exe

  • Size

    2.2MB

  • MD5

    8e91ce989f6f12b5296b9f7aa6bd3860

  • SHA1

    716c12298bbda1ac368709cc7b6c31833d485976

  • SHA256

    74c8cd8ed8ea31c6c767410eb34802743933c4ffdba348f8beb4bb6d07ff0d91

  • SHA512

    3fbc6636d3eb723155cb45f8548163d00271733769d6854bd3773406c1acda7253ba07112fd670c72dc48671a671026fe0b3c626f9f1612fb8b9a27e7848018d

  • SSDEEP

    49152:32Skfob75L4zrxDpnl+GyL+OYthd1QdNdyvYDCo+jzVeFZDhdI:mSUob14zr1N8BL+OGhUyvY16UnDhdI

Malware Config

Extracted

Family

socks5systemz

C2

http://dtqjhde.info/search/?q=67e28dd83d54f12b140cff197c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4de8889b5e4fa9281ae978a271ea771795af8e05c642db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe13c9ed909a39

http://dtqjhde.info/search/?q=67e28dd83d54f12b140cff197c27d78406abdd88be4b12eab517aa5c96bd86ec9c8f44805a8bbc896c58e713bc90c91836b5281fc235a925ed3e01d6bd974a95129070b611e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee949832cf6a9614

Signatures

  • Detect Socks5Systemz Payload 4 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\74c8cd8ed8ea31c6c767410eb34802743933c4ffdba348f8beb4bb6d07ff0d91.exe
    "C:\Users\Admin\AppData\Local\Temp\74c8cd8ed8ea31c6c767410eb34802743933c4ffdba348f8beb4bb6d07ff0d91.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2404
    • C:\Users\Admin\AppData\Local\Temp\is-9TV9U.tmp\74c8cd8ed8ea31c6c767410eb34802743933c4ffdba348f8beb4bb6d07ff0d91.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-9TV9U.tmp\74c8cd8ed8ea31c6c767410eb34802743933c4ffdba348f8beb4bb6d07ff0d91.tmp" /SL5="$600DC,1927047,54272,C:\Users\Admin\AppData\Local\Temp\74c8cd8ed8ea31c6c767410eb34802743933c4ffdba348f8beb4bb6d07ff0d91.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1020
      • 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:1228
      • 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:5072

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe

          Filesize

          2.2MB

          MD5

          b347167a660c271a5e46da17b4d2ed2e

          SHA1

          1b924c44838230a69a108bb3ca5da4569f44d94b

          SHA256

          2a65cae99af2cc9ecb0bad0276a5c5063c837546723dad07f28457a127949211

          SHA512

          0c8145f72a34a7e9f0739b7541ecf3722cf4fc01ec615dfd988e3ef409b2a4e7360ca8da874701c3fea26aba35339e49595d338c8eff66664bcb0479469999e6

        • C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe

          Filesize

          1.3MB

          MD5

          1642df0fefca25a03dfe6b78202f9881

          SHA1

          fa45b836081920fe8b501f79773297b740ed55ce

          SHA256

          ebaadb1179e377dcdbfe742307d7e5ee1662c60925f5514f73974877727ddcb8

          SHA512

          650ee9160a5d300c2f14d7cfbf08982a4159d14daf9ff67fc22681ce9878008d672c422e8bd61087cd1d57db595188f0a6ea2dda43b2e6cde7b83e0a7635b0ac

        • C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe

          Filesize

          704KB

          MD5

          60b61cb4f21584ca890e4e5bbee41cfe

          SHA1

          32a347ce3a88604811c1f37b92d8c731ff579751

          SHA256

          b1f2859d94faa804215b51a6b50d12c58c074044f8fc72523c7be6ffbadff0fb

          SHA512

          fdcc8290d9f6c4c5a857dfc8c9760e15b3f2c2f85840255fb2eb69fa9bcfbcb3e2693035180a99b96a0d593bddc4120721c9a0f16916f8eb197b413f18fb2190

        • C:\Users\Admin\AppData\Local\Temp\is-47K0I.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • C:\Users\Admin\AppData\Local\Temp\is-9TV9U.tmp\74c8cd8ed8ea31c6c767410eb34802743933c4ffdba348f8beb4bb6d07ff0d91.tmp

          Filesize

          677KB

          MD5

          5a1e3d46cb5a24f8e50b2a59d2ba1cf3

          SHA1

          fe86894c4757c144449bc744649b7fb9e03346f1

          SHA256

          d3a2c2ce7d70b3b9c30faf3f72bf4ebcdea8f331d6b6cac5dae906327997985d

          SHA512

          a27dc5c443abb31826b14e514aa717be5bf0f548b82170f79705f45ca28abaedc485c5b8738044735f61eca9e1f0ca659b519a3947551404085d07202ae709af

        • memory/1020-50-0x0000000002440000-0x0000000002441000-memory.dmp

          Filesize

          4KB

        • memory/1020-7-0x0000000002440000-0x0000000002441000-memory.dmp

          Filesize

          4KB

        • memory/1020-48-0x0000000000400000-0x00000000004B8000-memory.dmp

          Filesize

          736KB

        • memory/1228-40-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/1228-39-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/1228-43-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/1228-38-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/2404-2-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/2404-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/2404-47-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/5072-63-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/5072-73-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/5072-53-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/5072-54-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/5072-57-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/5072-60-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/5072-46-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/5072-66-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/5072-67-0x0000000000970000-0x0000000000A12000-memory.dmp

          Filesize

          648KB

        • memory/5072-49-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/5072-76-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/5072-77-0x0000000000970000-0x0000000000A12000-memory.dmp

          Filesize

          648KB

        • memory/5072-80-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/5072-83-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/5072-86-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/5072-89-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/5072-90-0x0000000000970000-0x0000000000A12000-memory.dmp

          Filesize

          648KB

        • memory/5072-91-0x0000000000970000-0x0000000000A12000-memory.dmp

          Filesize

          648KB

        • memory/5072-95-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/5072-98-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB