Analysis

  • max time kernel
    149s
  • max time network
    151s
  • 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, 17:35

General

  • Target

    ca24618682a4932c1ccfebcc4239505c2a876317d0c8c1d558c7a69d4680bee4.exe

  • Size

    2.0MB

  • MD5

    c4e8146864f98ad993f1483174635ad1

  • SHA1

    1ab7de41fffe40a1611e5deec20ea313188b1539

  • SHA256

    ca24618682a4932c1ccfebcc4239505c2a876317d0c8c1d558c7a69d4680bee4

  • SHA512

    d1784df7c8c626f1f15c938405823b9fb926584becfc2f34e8afec995f5bca50b542831f7cc36598a80d2cb4a0d5b4fde1008499f5d8ef3b7cc25bd8d4a5d38e

  • SSDEEP

    49152:32Yv6dMl3Y0IIwXgSduJFHoX6RmrJ/ajQDFg0qwbplXY0WFI:mYi2l5I7mHw6REJ/WWNbYPFI

Malware Config

Extracted

Family

socks5systemz

C2

http://bwkjkpz.com/search/?q=67e28dd8655ba479120da84d7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4fe8889b5e4fa9281ae978a071ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ffe12c0ee9d9b38

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 WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ca24618682a4932c1ccfebcc4239505c2a876317d0c8c1d558c7a69d4680bee4.exe
    "C:\Users\Admin\AppData\Local\Temp\ca24618682a4932c1ccfebcc4239505c2a876317d0c8c1d558c7a69d4680bee4.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4924
    • C:\Users\Admin\AppData\Local\Temp\is-60389.tmp\ca24618682a4932c1ccfebcc4239505c2a876317d0c8c1d558c7a69d4680bee4.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-60389.tmp\ca24618682a4932c1ccfebcc4239505c2a876317d0c8c1d558c7a69d4680bee4.tmp" /SL5="$E0028,1776977,54272,C:\Users\Admin\AppData\Local\Temp\ca24618682a4932c1ccfebcc4239505c2a876317d0c8c1d558c7a69d4680bee4.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:4536
      • 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:1064
      • 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:4476

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          2.0MB

          MD5

          9002b549ae8e8c7dcc447065c93056c7

          SHA1

          67e0428017a232d12202e5c56301e9f9503681b4

          SHA256

          2abb09df861a03e1b88d9074d319dd6a676c62e80a65c058e60f605af2d015ac

          SHA512

          48487168d49c2108a8db699cc64404afe60374b0d55214d157276430f75d6ea944ed2657d6f808999421bfe7c104e27111746605aca0f6a4439049bc403364ca

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

          Filesize

          1.5MB

          MD5

          1904177ab4f790941eb1478ba9dc2c08

          SHA1

          e0c4ef7875060c979c1ed8a14df95cf0d28cb758

          SHA256

          a7c62dbb02a6baa95e23b75ecc54a41cc58841190ba54d372a4dfdeab7736342

          SHA512

          44ed9106ef57d5d219fa15e247c6b1ca5285e2a2c43a2b2fbd0da4b2392a7c0c2348f536777b5aa03053d297e9d9e1f7bd911b6637012ed3280a62baec07c6a9

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

          Filesize

          809KB

          MD5

          aaab90195d957eb934db134b35810d7d

          SHA1

          2d3451ebe091913c787a621f1fc6f12e16df08d1

          SHA256

          7ce76d5b5f3e408f64cec6e17213a4460f7b1be33ba4a24afa9185a8364fa05d

          SHA512

          1c47a8a01cbcbf8e46eaf33b550e9a3633f7e741478c09d1de3470e6c1f1ea8f219a30b10ee607d8fea4aabd96edfcf1aaab7b22dfea6139df46b19d3f937af0

        • C:\Users\Admin\AppData\Local\Temp\is-60389.tmp\ca24618682a4932c1ccfebcc4239505c2a876317d0c8c1d558c7a69d4680bee4.tmp

          Filesize

          677KB

          MD5

          5a1e3d46cb5a24f8e50b2a59d2ba1cf3

          SHA1

          fe86894c4757c144449bc744649b7fb9e03346f1

          SHA256

          d3a2c2ce7d70b3b9c30faf3f72bf4ebcdea8f331d6b6cac5dae906327997985d

          SHA512

          a27dc5c443abb31826b14e514aa717be5bf0f548b82170f79705f45ca28abaedc485c5b8738044735f61eca9e1f0ca659b519a3947551404085d07202ae709af

        • C:\Users\Admin\AppData\Local\Temp\is-HR3J8.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • memory/1064-43-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/1064-42-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/1064-38-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/1064-39-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4476-69-0x00000000021A0000-0x0000000002242000-memory.dmp

          Filesize

          648KB

        • memory/4476-81-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4476-97-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4476-46-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4476-94-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4476-90-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4476-49-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4476-87-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4476-53-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4476-54-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4476-57-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4476-60-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4476-63-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4476-65-0x00000000021A0000-0x0000000002242000-memory.dmp

          Filesize

          648KB

        • memory/4476-67-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4476-84-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4476-74-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4476-77-0x0000000000400000-0x0000000000601000-memory.dmp

          Filesize

          2.0MB

        • memory/4476-78-0x00000000021A0000-0x0000000002242000-memory.dmp

          Filesize

          648KB

        • memory/4536-7-0x0000000000750000-0x0000000000751000-memory.dmp

          Filesize

          4KB

        • memory/4536-50-0x0000000000750000-0x0000000000751000-memory.dmp

          Filesize

          4KB

        • memory/4536-48-0x0000000000400000-0x00000000004B8000-memory.dmp

          Filesize

          736KB

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

          Filesize

          80KB

        • memory/4924-47-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/4924-2-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB