Analysis

  • max time kernel
    143s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    25/03/2024, 01:01

General

  • Target

    41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.exe

  • Size

    2.0MB

  • MD5

    0574b31aca7165d0a8ba6ed16e0c8224

  • SHA1

    6b242787348a0d296d3aed84fea8c4884b863916

  • SHA256

    41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60

  • SHA512

    c1e07b9230f35b9b0adbec1a56b55dadba522d100bc5b22ec34ab286fdc2c705b49dc248e65a8dc67f6ae30ef0eeaf5b5116feb547f504a1e77719f20420baa6

  • SSDEEP

    24576:320DPMIe3Ahdm7Gsfdqa1zNSwld+snicYeVCeHZE+yScddwF/+4SSHNGkJR/YaLG:32MMhQh87/1RbticF7BSI7N+O98

Malware Config

Extracted

Family

socks5systemz

C2

http://bpmmtyo.com/search/?q=67e28dd86554fa2a495aa4197c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4de8889b5e4fa9281ae978a071ea771795af8e05c642db22f31df92d8b38e316a667d307eca743ec4c2b07b52966923a668dfd19c5eb91

Signatures

  • Detect Socks5Systemz Payload 3 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 6 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\41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.exe
    "C:\Users\Admin\AppData\Local\Temp\41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2192
    • C:\Users\Admin\AppData\Local\Temp\is-HCMNC.tmp\41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-HCMNC.tmp\41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.tmp" /SL5="$30144,1711334,54272,C:\Users\Admin\AppData\Local\Temp\41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:836
      • C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe
        "C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:2544
      • C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe
        "C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:2412

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • \Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe

          Filesize

          1.8MB

          MD5

          8ade5b51df65ef913b39092d7c4d72a9

          SHA1

          74437251d55eca86819232a1e221b4a8495263e8

          SHA256

          75127b731d22745d3fd9335f9e8e589440e6a3ea4ce325252fc45154cf74a000

          SHA512

          436517193959dd01b678b8feed889f6d557551f2d67368f1f81e040bf67bb7a46d7c750d3cac942566c14b812bf59267d889481c3f0b1081dfeb6dbed2d0e149

        • \Users\Admin\AppData\Local\Temp\is-HCMNC.tmp\41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.tmp

          Filesize

          677KB

          MD5

          88d7ea648defbc2597fa38ef83112eda

          SHA1

          2bce9acfb1b5e08dc29c695eff12fc80949c6440

          SHA256

          5a53b8bd78b1bbf24136b4d8d8191f503abcc24934626ed6f15bf9f6dee17b68

          SHA512

          050ce971e1f7a4e92d272c9c3c9f96f1214286523b018a75084c76dbebb5f32a717afbd9af9c68b7ad71f738c0a331640a8fe765cb4def90678eae4769b2e66a

        • \Users\Admin\AppData\Local\Temp\is-UR6QP.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • \Users\Admin\AppData\Local\Temp\is-UR6QP.tmp\_isetup\_isdecmp.dll

          Filesize

          32KB

          MD5

          b6f11a0ab7715f570f45900a1fe84732

          SHA1

          77b1201e535445af5ea94c1b03c0a1c34d67a77b

          SHA256

          e47dd306a9854599f02bc1b07ca6dfbd5220f8a1352faa9616d1a327de0bbf67

          SHA512

          78a757e67d21eb7cc95954df15e3eeff56113d6b40fb73f0c5f53304265cc52c79125d6f1b3655b64f9a411711b5b70f746080d708d7c222f4e65bad64b1b771

        • \Users\Admin\AppData\Local\Temp\is-UR6QP.tmp\_isetup\_shfoldr.dll

          Filesize

          22KB

          MD5

          92dc6ef532fbb4a5c3201469a5b5eb63

          SHA1

          3e89ff837147c16b4e41c30d6c796374e0b8e62c

          SHA256

          9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

          SHA512

          9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

        • memory/836-8-0x00000000003C0000-0x00000000003C1000-memory.dmp

          Filesize

          4KB

        • memory/836-45-0x0000000003690000-0x0000000003865000-memory.dmp

          Filesize

          1.8MB

        • memory/836-61-0x0000000003690000-0x0000000003865000-memory.dmp

          Filesize

          1.8MB

        • memory/836-60-0x00000000003C0000-0x00000000003C1000-memory.dmp

          Filesize

          4KB

        • memory/836-58-0x0000000000400000-0x00000000004B8000-memory.dmp

          Filesize

          736KB

        • memory/2192-57-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/2192-1-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/2412-85-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2412-88-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2412-54-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2412-108-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2412-59-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2412-105-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2412-101-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2412-64-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2412-65-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2412-68-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2412-71-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2412-74-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2412-77-0x0000000002600000-0x00000000026A2000-memory.dmp

          Filesize

          648KB

        • memory/2412-78-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2412-80-0x0000000002600000-0x00000000026A2000-memory.dmp

          Filesize

          648KB

        • memory/2412-98-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2412-56-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2412-89-0x0000000002600000-0x00000000026A2000-memory.dmp

          Filesize

          648KB

        • memory/2412-92-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2412-95-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2544-47-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2544-48-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2544-49-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2544-52-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB