Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-06-2024 09:24

General

  • Target

    7a657c94da6da0c7c9eeae9d4eb6710b8bb45fbcd2d92b59e249471f7352f8a4.exe

  • Size

    4.8MB

  • MD5

    f8e0a3695a52db56a66242307f12707e

  • SHA1

    df1f24f3ec9aa9288fe600101bbcc575a3bfdf3f

  • SHA256

    7a657c94da6da0c7c9eeae9d4eb6710b8bb45fbcd2d92b59e249471f7352f8a4

  • SHA512

    7c3956011eb8387ebb485874231e19aa060e7d012eff8aaf7aea9cd120ce29100781652e00588fd9005ef00beed1e4f9ff6cdbf442f7dda4099daa3c2ace6b81

  • SSDEEP

    98304:mrPr+DRIz072RIpF4giuh9gIEPXHF+15OZQhXgm2euGHGihfKaHvdQgu:9DRIzVRIpdh9gBY15OZigm2eBdfKaHeF

Malware Config

Extracted

Family

socks5systemz

C2

bwocjzk.com

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\7a657c94da6da0c7c9eeae9d4eb6710b8bb45fbcd2d92b59e249471f7352f8a4.exe
    "C:\Users\Admin\AppData\Local\Temp\7a657c94da6da0c7c9eeae9d4eb6710b8bb45fbcd2d92b59e249471f7352f8a4.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3156
    • C:\Users\Admin\AppData\Local\Temp\is-T0EL4.tmp\7a657c94da6da0c7c9eeae9d4eb6710b8bb45fbcd2d92b59e249471f7352f8a4.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-T0EL4.tmp\7a657c94da6da0c7c9eeae9d4eb6710b8bb45fbcd2d92b59e249471f7352f8a4.tmp" /SL5="$601C8,4739211,54272,C:\Users\Admin\AppData\Local\Temp\7a657c94da6da0c7c9eeae9d4eb6710b8bb45fbcd2d92b59e249471f7352f8a4.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:3532
      • C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition.exe
        "C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition.exe" -i
        3⤵
        • Executes dropped EXE
        PID:4200
      • C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition.exe
        "C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition.exe" -s
        3⤵
        • Executes dropped EXE
        PID:2304

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition.exe

    Filesize

    2.7MB

    MD5

    4fb5a7b123687a368357bec69beebbe2

    SHA1

    77d64b30268691d0d05a7265990f0c08eca16dd5

    SHA256

    74568df53314358994b5b8460e0c347e9c594b14e92f854d4442e83235f0f90c

    SHA512

    a745e22dce51798da2cae4a15a32e75d107ddb93b91e446fc383156c22a03105c165f64ac8d81e4b920f437b1a6fddec796c877493b045582f546ab1832b0797

  • C:\Users\Admin\AppData\Local\Temp\is-PPF4B.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-T0EL4.tmp\7a657c94da6da0c7c9eeae9d4eb6710b8bb45fbcd2d92b59e249471f7352f8a4.tmp

    Filesize

    680KB

    MD5

    1e597ae2b625c5a6128b71f9ab8b27f9

    SHA1

    69cd3ce903259678c63009828be907b00e6a8042

    SHA256

    a0f4c4c7591a62eab9abe74e58934a687fb1dc38b69f4ed49fde30505e647120

    SHA512

    06fcbffe87ceb4e041988a3ea752d9cff323c5bcd2c62649c3cd19b25ef80d936cd92dff403fbed2f896fe9a30bbe5cba47a12116ac1089a454a9bc3c311bc9d

  • memory/2304-95-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/2304-79-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/2304-113-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/2304-110-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/2304-107-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/2304-104-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/2304-101-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/2304-66-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/2304-98-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/2304-92-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/2304-70-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/2304-73-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/2304-76-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/2304-87-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/2304-82-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/2304-85-0x0000000000990000-0x0000000000A32000-memory.dmp

    Filesize

    648KB

  • memory/3156-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/3156-68-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/3156-3-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/3532-13-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/3532-69-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4200-64-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/4200-63-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/4200-60-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/4200-59-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB