Analysis

  • max time kernel
    148s
  • 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
    23/03/2024, 13:50

General

  • Target

    ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.exe

  • Size

    2.0MB

  • MD5

    4fbc079afc0e59a9b99ef86981fa5326

  • SHA1

    06349881fcb8b34be0f79b849cf0f1289ac4d588

  • SHA256

    ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1

  • SHA512

    b9445eddab7a234504fa73cb410d9103dea4534b1e16d078fde9b11cfca45c8adb073825799ef9b53b2d1e506d634ec251cbe5f26cf7cace5168287bb3a9bcc1

  • SSDEEP

    49152:32TL+/Bjpvz7OAUZ8Dx3vEEDGBPAqfqQOmQBTTTjNIH:mTLYywV/EESFA2KBvCH

Malware Config

Extracted

Family

socks5systemz

C2

http://bmnxqvn.com/search/?q=67e28dd83a5da32a155afd1b7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a271ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ffe13c0ee9c993c

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\ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.exe
    "C:\Users\Admin\AppData\Local\Temp\ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1280
    • C:\Users\Admin\AppData\Local\Temp\is-0RU3E.tmp\ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-0RU3E.tmp\ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.tmp" /SL5="$90030,1781689,54272,C:\Users\Admin\AppData\Local\Temp\ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2500
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -i
        3⤵
        • Executes dropped EXE
        PID:1596
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -s
        3⤵
        • Executes dropped EXE
        PID:384
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4068 --field-trial-handle=2900,i,14549994492153927475,12895178890800740987,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4728

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe

            Filesize

            2.1MB

            MD5

            a8f9420959ddb2ee550f7e21644357a7

            SHA1

            4e429af917fe5e50b210c1aaa12e62a3e0c51d8f

            SHA256

            c57954dfad4f4bc99ac2fdba834e684831d0e8f1e8fb2ccc14463090739b09e7

            SHA512

            d2890847e9f98a6f8a2ff1126c9c0917b17caa1c9a9d1bf59280588f4c9b1c09b92e1520c50d0eb8721bb6fe5ef235c56ea2c2bd9640423aa884d376f082d928

          • C:\Users\Admin\AppData\Local\Temp\is-0RU3E.tmp\ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.tmp

            Filesize

            677KB

            MD5

            d394fc26de69f06950dc1c71959b0261

            SHA1

            7c9448fc3582f19763eaa8e3c5383b7873aee017

            SHA256

            405e474735b776fc09dc71d3a5b44c50b9e2c745cdf7e79eb89dc791866ffe2a

            SHA512

            63ef7265aac27715f5b799b588955dd5df3f49ecd0042fba69d0effe7dfe24d6777079677a809e817e4e8243a2185ca9c3a8022c9247bb2a070c213f06d7bc10

          • C:\Users\Admin\AppData\Local\Temp\is-ECMN9.tmp\_isetup\_iscrypt.dll

            Filesize

            2KB

            MD5

            a69559718ab506675e907fe49deb71e9

            SHA1

            bc8f404ffdb1960b50c12ff9413c893b56f2e36f

            SHA256

            2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

            SHA512

            e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

          • memory/384-77-0x0000000000400000-0x0000000000611000-memory.dmp

            Filesize

            2.1MB

          • memory/384-80-0x0000000000400000-0x0000000000611000-memory.dmp

            Filesize

            2.1MB

          • memory/384-97-0x0000000000400000-0x0000000000611000-memory.dmp

            Filesize

            2.1MB

          • memory/384-93-0x0000000000400000-0x0000000000611000-memory.dmp

            Filesize

            2.1MB

          • memory/384-90-0x0000000000400000-0x0000000000611000-memory.dmp

            Filesize

            2.1MB

          • memory/384-87-0x0000000000400000-0x0000000000611000-memory.dmp

            Filesize

            2.1MB

          • memory/384-84-0x0000000000400000-0x0000000000611000-memory.dmp

            Filesize

            2.1MB

          • memory/384-81-0x00000000008B0000-0x0000000000952000-memory.dmp

            Filesize

            648KB

          • memory/384-63-0x0000000000400000-0x0000000000611000-memory.dmp

            Filesize

            2.1MB

          • memory/384-48-0x0000000000400000-0x0000000000611000-memory.dmp

            Filesize

            2.1MB

          • memory/384-49-0x0000000000400000-0x0000000000611000-memory.dmp

            Filesize

            2.1MB

          • memory/384-70-0x00000000008B0000-0x0000000000952000-memory.dmp

            Filesize

            648KB

          • memory/384-53-0x0000000000400000-0x0000000000611000-memory.dmp

            Filesize

            2.1MB

          • memory/384-55-0x0000000000400000-0x0000000000611000-memory.dmp

            Filesize

            2.1MB

          • memory/384-60-0x0000000000400000-0x0000000000611000-memory.dmp

            Filesize

            2.1MB

          • memory/384-71-0x00000000008B0000-0x0000000000952000-memory.dmp

            Filesize

            648KB

          • memory/384-57-0x0000000000400000-0x0000000000611000-memory.dmp

            Filesize

            2.1MB

          • memory/384-66-0x0000000000400000-0x0000000000611000-memory.dmp

            Filesize

            2.1MB

          • memory/384-69-0x0000000000400000-0x0000000000611000-memory.dmp

            Filesize

            2.1MB

          • memory/1280-0-0x0000000000400000-0x0000000000414000-memory.dmp

            Filesize

            80KB

          • memory/1280-2-0x0000000000400000-0x0000000000414000-memory.dmp

            Filesize

            80KB

          • memory/1280-17-0x0000000000400000-0x0000000000414000-memory.dmp

            Filesize

            80KB

          • memory/1596-44-0x0000000000400000-0x0000000000611000-memory.dmp

            Filesize

            2.1MB

          • memory/1596-41-0x0000000000400000-0x0000000000611000-memory.dmp

            Filesize

            2.1MB

          • memory/1596-40-0x0000000000400000-0x0000000000611000-memory.dmp

            Filesize

            2.1MB

          • memory/1596-39-0x0000000000400000-0x0000000000611000-memory.dmp

            Filesize

            2.1MB

          • memory/2500-7-0x0000000002240000-0x0000000002241000-memory.dmp

            Filesize

            4KB

          • memory/2500-51-0x0000000002240000-0x0000000002241000-memory.dmp

            Filesize

            4KB

          • memory/2500-46-0x0000000000400000-0x00000000004B8000-memory.dmp

            Filesize

            736KB