Analysis

  • max time kernel
    144s
  • max time network
    128s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    25/03/2024, 01:41

General

  • Target

    76836cbb9920f7b6f427b5dfce569df588b2344e85c4c2e7b55c791451b6b6a1.exe

  • Size

    2.2MB

  • MD5

    49fe4735e75193274cde5a90dca8d507

  • SHA1

    4e8a3bb2b436e7e638795f5a1616bedae717ac84

  • SHA256

    76836cbb9920f7b6f427b5dfce569df588b2344e85c4c2e7b55c791451b6b6a1

  • SHA512

    68cf27357218af330befadeb22c6b97d2020e5a49a66a9e6c80c3615cefba15478195d99657e22ea835cf083914dad3bf23664f9126f2b0139222dbe7f901a37

  • SSDEEP

    49152:32EhCr4Pj565Uc1zixnsx0UbwXAkcHeKf/+lAyJqM:mEl6CnxyF2A3Hei+l1JqM

Malware Config

Extracted

Family

socks5systemz

C2

http://bfwqbdi.com/search/?q=67e28dd86a5ef62a130aa5197c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a771ea771795af8e05c646db22f31df92d8b38e316a667d307eca743ec4c2b07b52966923a668dfc11c9e89c

Signatures

  • Detect Socks5Systemz Payload 2 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 5 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 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\76836cbb9920f7b6f427b5dfce569df588b2344e85c4c2e7b55c791451b6b6a1.exe
    "C:\Users\Admin\AppData\Local\Temp\76836cbb9920f7b6f427b5dfce569df588b2344e85c4c2e7b55c791451b6b6a1.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1996
    • C:\Users\Admin\AppData\Local\Temp\is-V86BT.tmp\76836cbb9920f7b6f427b5dfce569df588b2344e85c4c2e7b55c791451b6b6a1.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-V86BT.tmp\76836cbb9920f7b6f427b5dfce569df588b2344e85c4c2e7b55c791451b6b6a1.tmp" /SL5="$400F4,1963376,54272,C:\Users\Admin\AppData\Local\Temp\76836cbb9920f7b6f427b5dfce569df588b2344e85c4c2e7b55c791451b6b6a1.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1676
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker32.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:2156
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker32.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:2584

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Color Picker\colorpicker32.exe

          Filesize

          2.2MB

          MD5

          d673fc73e6c80bd052d4011784c56c9a

          SHA1

          8e043078c2a4ec36f876c9250aa90eb9cc525944

          SHA256

          18b0ca673a0c396acbe28a1c7b4fefde2e51aa7126f52000bf74d3bd93377113

          SHA512

          0a7f2ddb026f362bb4aaf7cdc4569646b39698768f0046a04f05c91157034142d27238d20dde17cdb0f4644acc3fc3a7ad9fd564f48e10840bd3ba0b800d7e3f

        • \Users\Admin\AppData\Local\Temp\is-CMMFA.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • \Users\Admin\AppData\Local\Temp\is-CMMFA.tmp\_isetup\_shfoldr.dll

          Filesize

          22KB

          MD5

          92dc6ef532fbb4a5c3201469a5b5eb63

          SHA1

          3e89ff837147c16b4e41c30d6c796374e0b8e62c

          SHA256

          9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

          SHA512

          9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

        • \Users\Admin\AppData\Local\Temp\is-V86BT.tmp\76836cbb9920f7b6f427b5dfce569df588b2344e85c4c2e7b55c791451b6b6a1.tmp

          Filesize

          677KB

          MD5

          bb16a1aed23a42be299fa83942dc45cc

          SHA1

          eef3b71f03f3ea6148a08bf4ba6d3bc2239a56ba

          SHA256

          2fbf5d1a94ff7aa773d0abe9e2216f0347f47083bf66632e516b9e59ede819df

          SHA512

          bd1c5cf999c8824946906a6242309b41e6bcc926733107e87787ecb70c4e4d78ae395fcc9033606a72f08fee98103957063b3a47cd74e9e395d77c75287fd0b4

        • memory/1676-9-0x0000000000240000-0x0000000000241000-memory.dmp

          Filesize

          4KB

        • memory/1676-43-0x0000000003BE0000-0x0000000003E22000-memory.dmp

          Filesize

          2.3MB

        • memory/1676-58-0x0000000003BE0000-0x0000000003E22000-memory.dmp

          Filesize

          2.3MB

        • memory/1676-57-0x0000000000240000-0x0000000000241000-memory.dmp

          Filesize

          4KB

        • memory/1676-55-0x0000000000400000-0x00000000004B8000-memory.dmp

          Filesize

          736KB

        • memory/1996-54-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/1996-1-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/2156-45-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/2156-48-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/2156-44-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/2156-49-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/2584-71-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/2584-75-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/2584-51-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/2584-61-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/2584-62-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/2584-65-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/2584-68-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/2584-53-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/2584-74-0x0000000002310000-0x00000000023B2000-memory.dmp

          Filesize

          648KB

        • memory/2584-56-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/2584-81-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/2584-84-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/2584-85-0x0000000002310000-0x00000000023B2000-memory.dmp

          Filesize

          648KB

        • memory/2584-88-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/2584-91-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/2584-94-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/2584-97-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/2584-101-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB

        • memory/2584-104-0x0000000000400000-0x0000000000642000-memory.dmp

          Filesize

          2.3MB