Analysis

  • max time kernel
    146s
  • max time network
    137s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    25/03/2024, 01:00

General

  • Target

    13054d2dd86e9d9b7920a0172e9b40ee0409f4e21412ace7ce16160394b6e87d.exe

  • Size

    1.9MB

  • MD5

    02c9d37b3eebbc186b6fc262cd929762

  • SHA1

    492503ac894a9e9e78211cced39ed0b0052ad737

  • SHA256

    13054d2dd86e9d9b7920a0172e9b40ee0409f4e21412ace7ce16160394b6e87d

  • SHA512

    270dc2b769c094403d14777c42d13df23c666bfc868659bc7f81020ec95b338c766ea6a5836281951e69c59945db205e7afab9a6367d13de118dd97b1fec38f0

  • SSDEEP

    24576:320yWIKtk8hG3DLgGM+OGOBTYQ5BBdCHIMy9J9JnHYNOZZ6sN0zQeCpeJdU0y8vu:32etDGFM+2f7LDRkOZ/MCASu98

Malware Config

Extracted

Family

socks5systemz

C2

http://buzojyd.com/search/?q=67e28dd83f0fa47b1407ab4e7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa44e8889b5e4fa9281ae978a271ea771795af8e05c642db22f31df92d8b38e316a667d307eca743ec4c2b07b52966923a668dfd19c5ec94

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\13054d2dd86e9d9b7920a0172e9b40ee0409f4e21412ace7ce16160394b6e87d.exe
    "C:\Users\Admin\AppData\Local\Temp\13054d2dd86e9d9b7920a0172e9b40ee0409f4e21412ace7ce16160394b6e87d.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2056
    • C:\Users\Admin\AppData\Local\Temp\is-FT5JC.tmp\13054d2dd86e9d9b7920a0172e9b40ee0409f4e21412ace7ce16160394b6e87d.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-FT5JC.tmp\13054d2dd86e9d9b7920a0172e9b40ee0409f4e21412ace7ce16160394b6e87d.tmp" /SL5="$4001C,1676256,54272,C:\Users\Admin\AppData\Local\Temp\13054d2dd86e9d9b7920a0172e9b40ee0409f4e21412ace7ce16160394b6e87d.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:364
      • C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe
        "C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:2844
      • C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe
        "C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:1296

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          1.8MB

          MD5

          e712dbcea5c690365f89e154dce0b28e

          SHA1

          0ab2b0f6050abff77df5d48e58b400c57b6f4fc0

          SHA256

          58a4ba4a55e3384a8a7f11edd0750521455969ee72deea693845bbbfb6c52857

          SHA512

          c6bb4f97ced530ec4f901c2b26739c03b7c20807feb3e22bbdfef72a2ce3b6b553ba5927513a8781b423f3fc188bcd244d29b8c6b17fed83ed9e4c9e1d29bac4

        • \Users\Admin\AppData\Local\Temp\is-66990.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • \Users\Admin\AppData\Local\Temp\is-66990.tmp\_isetup\_isdecmp.dll

          Filesize

          32KB

          MD5

          b6f11a0ab7715f570f45900a1fe84732

          SHA1

          77b1201e535445af5ea94c1b03c0a1c34d67a77b

          SHA256

          e47dd306a9854599f02bc1b07ca6dfbd5220f8a1352faa9616d1a327de0bbf67

          SHA512

          78a757e67d21eb7cc95954df15e3eeff56113d6b40fb73f0c5f53304265cc52c79125d6f1b3655b64f9a411711b5b70f746080d708d7c222f4e65bad64b1b771

        • \Users\Admin\AppData\Local\Temp\is-66990.tmp\_isetup\_shfoldr.dll

          Filesize

          22KB

          MD5

          92dc6ef532fbb4a5c3201469a5b5eb63

          SHA1

          3e89ff837147c16b4e41c30d6c796374e0b8e62c

          SHA256

          9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

          SHA512

          9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

        • \Users\Admin\AppData\Local\Temp\is-FT5JC.tmp\13054d2dd86e9d9b7920a0172e9b40ee0409f4e21412ace7ce16160394b6e87d.tmp

          Filesize

          677KB

          MD5

          88d7ea648defbc2597fa38ef83112eda

          SHA1

          2bce9acfb1b5e08dc29c695eff12fc80949c6440

          SHA256

          5a53b8bd78b1bbf24136b4d8d8191f503abcc24934626ed6f15bf9f6dee17b68

          SHA512

          050ce971e1f7a4e92d272c9c3c9f96f1214286523b018a75084c76dbebb5f32a717afbd9af9c68b7ad71f738c0a331640a8fe765cb4def90678eae4769b2e66a

        • memory/364-58-0x0000000000400000-0x00000000004B8000-memory.dmp

          Filesize

          736KB

        • memory/364-8-0x00000000003D0000-0x00000000003D1000-memory.dmp

          Filesize

          4KB

        • memory/364-46-0x00000000038D0000-0x0000000003A9A000-memory.dmp

          Filesize

          1.8MB

        • memory/364-61-0x00000000038D0000-0x0000000003A9A000-memory.dmp

          Filesize

          1.8MB

        • memory/364-60-0x00000000003D0000-0x00000000003D1000-memory.dmp

          Filesize

          4KB

        • memory/1296-85-0x0000000000400000-0x00000000005CA000-memory.dmp

          Filesize

          1.8MB

        • memory/1296-91-0x00000000021A0000-0x0000000002242000-memory.dmp

          Filesize

          648KB

        • memory/1296-54-0x0000000000400000-0x00000000005CA000-memory.dmp

          Filesize

          1.8MB

        • memory/1296-108-0x0000000000400000-0x00000000005CA000-memory.dmp

          Filesize

          1.8MB

        • memory/1296-57-0x0000000000400000-0x00000000005CA000-memory.dmp

          Filesize

          1.8MB

        • memory/1296-105-0x0000000000400000-0x00000000005CA000-memory.dmp

          Filesize

          1.8MB

        • memory/1296-59-0x0000000000400000-0x00000000005CA000-memory.dmp

          Filesize

          1.8MB

        • memory/1296-101-0x0000000000400000-0x00000000005CA000-memory.dmp

          Filesize

          1.8MB

        • memory/1296-98-0x0000000000400000-0x00000000005CA000-memory.dmp

          Filesize

          1.8MB

        • memory/1296-64-0x0000000000400000-0x00000000005CA000-memory.dmp

          Filesize

          1.8MB

        • memory/1296-67-0x0000000000400000-0x00000000005CA000-memory.dmp

          Filesize

          1.8MB

        • memory/1296-68-0x0000000000400000-0x00000000005CA000-memory.dmp

          Filesize

          1.8MB

        • memory/1296-71-0x0000000000400000-0x00000000005CA000-memory.dmp

          Filesize

          1.8MB

        • memory/1296-74-0x0000000000400000-0x00000000005CA000-memory.dmp

          Filesize

          1.8MB

        • memory/1296-77-0x0000000000400000-0x00000000005CA000-memory.dmp

          Filesize

          1.8MB

        • memory/1296-78-0x00000000021A0000-0x0000000002242000-memory.dmp

          Filesize

          648KB

        • memory/1296-82-0x00000000021A0000-0x0000000002242000-memory.dmp

          Filesize

          648KB

        • memory/1296-95-0x0000000000400000-0x00000000005CA000-memory.dmp

          Filesize

          1.8MB

        • memory/1296-88-0x0000000000400000-0x00000000005CA000-memory.dmp

          Filesize

          1.8MB

        • memory/1296-92-0x0000000000400000-0x00000000005CA000-memory.dmp

          Filesize

          1.8MB

        • memory/2056-1-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/2056-56-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/2844-52-0x0000000000400000-0x00000000005CA000-memory.dmp

          Filesize

          1.8MB

        • memory/2844-47-0x0000000000400000-0x00000000005CA000-memory.dmp

          Filesize

          1.8MB

        • memory/2844-49-0x0000000000400000-0x00000000005CA000-memory.dmp

          Filesize

          1.8MB

        • memory/2844-48-0x0000000000400000-0x00000000005CA000-memory.dmp

          Filesize

          1.8MB