Analysis

  • max time kernel
    151s
  • max time network
    155s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240319-en
  • resource tags

    arch:x64arch:x86image:win11-20240319-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    24/03/2024, 17:33

General

  • Target

    6bd95e17e7cdf399aa6d2405bed57c91112ada2830d9298ec637c07a3aaa4af7.exe

  • Size

    2.2MB

  • MD5

    1a489ca4bdfa6ea3a6430bf966707379

  • SHA1

    286d9051f5e278a41d00afb4b2fd852f02061ec9

  • SHA256

    6bd95e17e7cdf399aa6d2405bed57c91112ada2830d9298ec637c07a3aaa4af7

  • SHA512

    6eedc23a6814ebcafe29a3aa6694e85bd904359c8b9d106aec10779bd106e3891e13ed463fbe835a8448b9b1414845d96bee91853f5a29ab635ceec19d590b60

  • SSDEEP

    49152:32c3kPZbNm6fSEhfqZhgRigMmsbZ0QM0TxI:mysoKUZhqMms+QMmI

Malware Config

Extracted

Family

socks5systemz

C2

http://cshjgaz.net/search/?q=67e28dd83e58f128495cab1c7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a471ea771795af8e05c642db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe12c0ee939c38

http://cshjgaz.net/search/?q=67e28dd83e58f128495cab1c7c27d78406abdd88be4b12eab517aa5c96bd86ec948648805a8bbc896c58e713bc90c91936b5281fc235a925ed3e07d6bd974a95129070b611e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee94993bcc699015

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\6bd95e17e7cdf399aa6d2405bed57c91112ada2830d9298ec637c07a3aaa4af7.exe
    "C:\Users\Admin\AppData\Local\Temp\6bd95e17e7cdf399aa6d2405bed57c91112ada2830d9298ec637c07a3aaa4af7.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3260
    • C:\Users\Admin\AppData\Local\Temp\is-FG2F7.tmp\6bd95e17e7cdf399aa6d2405bed57c91112ada2830d9298ec637c07a3aaa4af7.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-FG2F7.tmp\6bd95e17e7cdf399aa6d2405bed57c91112ada2830d9298ec637c07a3aaa4af7.tmp" /SL5="$7023C,1965922,54272,C:\Users\Admin\AppData\Local\Temp\6bd95e17e7cdf399aa6d2405bed57c91112ada2830d9298ec637c07a3aaa4af7.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:4316
      • 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:5200
      • 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:3684

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

          355fab8714f0d248c3b86fd4397f0299

          SHA1

          eaf7221379ca0791a3a28ef2f0f2369edc5433ba

          SHA256

          3437eea441202018e43dc7fd474f95b4bfdf67416a4de3804b71798d24e7526c

          SHA512

          91b6d7f06441a08925a38878f7902c17a400f192ecdc40efd8d72a7d2b57bdf8c183fc77e66ef1078b4981fd94fc79b6fcc8e53c7932f0122e304a3c12573154

        • C:\Users\Admin\AppData\Local\Temp\is-8TR5K.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • C:\Users\Admin\AppData\Local\Temp\is-FG2F7.tmp\6bd95e17e7cdf399aa6d2405bed57c91112ada2830d9298ec637c07a3aaa4af7.tmp

          Filesize

          677KB

          MD5

          5a1e3d46cb5a24f8e50b2a59d2ba1cf3

          SHA1

          fe86894c4757c144449bc744649b7fb9e03346f1

          SHA256

          d3a2c2ce7d70b3b9c30faf3f72bf4ebcdea8f331d6b6cac5dae906327997985d

          SHA512

          a27dc5c443abb31826b14e514aa717be5bf0f548b82170f79705f45ca28abaedc485c5b8738044735f61eca9e1f0ca659b519a3947551404085d07202ae709af

        • memory/3260-46-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/3260-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/3684-77-0x0000000000980000-0x0000000000A22000-memory.dmp

          Filesize

          648KB

        • memory/3684-62-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3684-98-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3684-95-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3684-45-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3684-91-0x0000000000980000-0x0000000000A22000-memory.dmp

          Filesize

          648KB

        • memory/3684-90-0x0000000000980000-0x0000000000A22000-memory.dmp

          Filesize

          648KB

        • memory/3684-48-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3684-89-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3684-52-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3684-53-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3684-56-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3684-59-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3684-86-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3684-65-0x0000000000980000-0x0000000000A22000-memory.dmp

          Filesize

          648KB

        • memory/3684-66-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3684-67-0x0000000000980000-0x0000000000A22000-memory.dmp

          Filesize

          648KB

        • memory/3684-73-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3684-76-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3684-83-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/3684-80-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/4316-6-0x0000000002340000-0x0000000002341000-memory.dmp

          Filesize

          4KB

        • memory/4316-49-0x0000000002340000-0x0000000002341000-memory.dmp

          Filesize

          4KB

        • memory/4316-47-0x0000000000400000-0x00000000004B8000-memory.dmp

          Filesize

          736KB

        • memory/5200-38-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/5200-37-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/5200-42-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB

        • memory/5200-41-0x0000000000400000-0x0000000000633000-memory.dmp

          Filesize

          2.2MB