Analysis

  • max time kernel
    147s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240508-en
  • resource tags

    arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    24-06-2024 23:56

General

  • Target

    334f135e2400b5864b510849e927bd45ef0864e0f6b0ad291f5e2c3347c9b15f.exe

  • Size

    4.8MB

  • MD5

    8836d2a69d2d59e0beb368534207b667

  • SHA1

    a5089bc672b7f5916d06c0522321e8bdfffdcaa6

  • SHA256

    334f135e2400b5864b510849e927bd45ef0864e0f6b0ad291f5e2c3347c9b15f

  • SHA512

    00a178c41589c93da4b1385d4da2062f33d5f499fcc8916c0fca2a463cee34cf2d6c4fd365c8dfe475341475c8f47c8b7efc409844a280fae45a1cfc73f11452

  • SSDEEP

    98304:msAua+ZFYilw5ujPX0KliS8iVFag25zmL2MXJRFQID/:1BZwMjf0K7F/wCyMr+IT

Malware Config

Extracted

Family

socks5systemz

C2

ccjyjoo.net

Signatures

  • Detect Socks5Systemz Payload 1 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 IoCs
  • Unexpected DNS network traffic destination 3 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 FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\334f135e2400b5864b510849e927bd45ef0864e0f6b0ad291f5e2c3347c9b15f.exe
    "C:\Users\Admin\AppData\Local\Temp\334f135e2400b5864b510849e927bd45ef0864e0f6b0ad291f5e2c3347c9b15f.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3004
    • C:\Users\Admin\AppData\Local\Temp\is-7KGVT.tmp\334f135e2400b5864b510849e927bd45ef0864e0f6b0ad291f5e2c3347c9b15f.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-7KGVT.tmp\334f135e2400b5864b510849e927bd45ef0864e0f6b0ad291f5e2c3347c9b15f.tmp" /SL5="$70232,4744462,54272,C:\Users\Admin\AppData\Local\Temp\334f135e2400b5864b510849e927bd45ef0864e0f6b0ad291f5e2c3347c9b15f.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2628
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:2944
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:3896

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\is-5557A.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-7KGVT.tmp\334f135e2400b5864b510849e927bd45ef0864e0f6b0ad291f5e2c3347c9b15f.tmp

    Filesize

    680KB

    MD5

    893bd2f08862ec5904f78d072c7a274c

    SHA1

    d6e87230b90b418345000a8d696bd552469d8d06

    SHA256

    0fa65c54cf864083c000adcc62456314b7f3b882e120de4de1ba08c565dd40a5

    SHA512

    940abebb53504b2a4fc252eb36ab75a1523abe72aa5a5ace6f15deacc59f259177d5c7f23af9e2a85ccde43126d0ae4b10bde56fb0b3380b97851a39e6569fc3

  • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe

    Filesize

    2.8MB

    MD5

    e7e9871d5b763bb1d8c75f98bfd32b99

    SHA1

    3b39b35f1fdee524b0b841f56eaa21f346d7d501

    SHA256

    6251f2d8bd3ad9482b20f7425b0163ec37deddf2594880f824978251f43c8e2a

    SHA512

    e1968c869e44da79e9725926fddcb8b3dc139f8c4833557191b3e8bfcb4639e2e0bedf26bdbdfc71f44a878c56bb8c3adeb75066cd9864e2177154d10bafc230

  • memory/2628-16-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2628-71-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2944-59-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2944-60-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2944-65-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2944-63-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3004-70-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/3004-2-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/3004-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/3896-72-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3896-90-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3896-67-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3896-75-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3896-76-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3896-79-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3896-82-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3896-85-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3896-88-0x0000000000AC0000-0x0000000000B62000-memory.dmp

    Filesize

    648KB

  • memory/3896-69-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3896-95-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3896-98-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3896-101-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3896-104-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3896-107-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3896-110-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3896-113-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3896-116-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB