Analysis

  • max time kernel
    141s
  • max time network
    127s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240611-en
  • resource tags

    arch:x64arch:x86image:win11-20240611-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    25-06-2024 05:44

General

  • Target

    378e3aa0f403b170d111d9725988334231b146e8a995483906e1a52aec1ecfc0.exe

  • Size

    5.1MB

  • MD5

    bd5c2954ad05fb25b65d78b7293c1051

  • SHA1

    7e357e10c6defff5674aff6764ab8887d232d294

  • SHA256

    378e3aa0f403b170d111d9725988334231b146e8a995483906e1a52aec1ecfc0

  • SHA512

    88dc1ce69ded4446ec3887cf8d1e90acc90254879b8fd68e94aedd0c935cbbf932fac3ab12bdda90cb9c12ce19fbef1799b28b99044474f135047d4caa08e1af

  • SSDEEP

    98304:mbDwKnagP3i1C7CtcFeel7nvgfofs4dt/DJ50OEltDmP:AaOgO+MvG94df5COP

Malware Config

Extracted

Family

socks5systemz

C2

bbxmdwy.com

http://bbxmdwy.com/search/?q=67e28dd86c5af52d4607af197c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ee8889b5e4fa9281ae978a571ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff613c9eb969838

http://bbxmdwy.com/search/?q=67e28dd86c5af52d4607af197c27d78406abdd88be4b12eab517aa5c96bd86ee968448845a8bbc896c58e713bc90c91b36b5281fc235a925ed3e06d6bd974a95129070b616e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee9c9832c96c9415

Signatures

  • Detect Socks5Systemz Payload 3 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 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 FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\378e3aa0f403b170d111d9725988334231b146e8a995483906e1a52aec1ecfc0.exe
    "C:\Users\Admin\AppData\Local\Temp\378e3aa0f403b170d111d9725988334231b146e8a995483906e1a52aec1ecfc0.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2440
    • C:\Users\Admin\AppData\Local\Temp\is-EVPBH.tmp\378e3aa0f403b170d111d9725988334231b146e8a995483906e1a52aec1ecfc0.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-EVPBH.tmp\378e3aa0f403b170d111d9725988334231b146e8a995483906e1a52aec1ecfc0.tmp" /SL5="$4021A,5129191,54272,C:\Users\Admin\AppData\Local\Temp\378e3aa0f403b170d111d9725988334231b146e8a995483906e1a52aec1ecfc0.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:1300
      • 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:1688
      • 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:1496

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

    3.1MB

    MD5

    5310375253cd0e0fbb5c15cf1d5260d5

    SHA1

    3b41855c12305b36d6de72132e31f686460a0bc2

    SHA256

    af510ed4f33cceb25f041db707a7f3c24cfc54deaac1082ab1c2d437ad94e893

    SHA512

    3194fdcf48bdffdf34b4b6c5e968deda24158227609dc7d4896d39735e4f98c9c4b50187d594dbb525e8f00fe31de7ff2f4402fa7e27512218c13a56ae3305ca

  • C:\Users\Admin\AppData\Local\Temp\is-AG52E.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-EVPBH.tmp\378e3aa0f403b170d111d9725988334231b146e8a995483906e1a52aec1ecfc0.tmp

    Filesize

    680KB

    MD5

    c570b38a29e1d53c38a12bca682672e7

    SHA1

    f7c6166feae7ab99a125006225622e9929a29aa6

    SHA256

    3eef7973b2a7cf4cee4907c6c19ad750359a3d08f65f741bc22a26f92f6cdf36

    SHA512

    f17ddfeccc853f5507d548308b06c5834490d798a96d9de81620b8f8165a10ab31ee6f7912ccd8e1ff04583449c4ac1516b5cc1b165f8a4aa8e387f51e19fcc6

  • memory/1300-69-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1300-16-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1496-96-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/1496-105-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/1496-117-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/1496-114-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/1496-109-0x0000000002480000-0x0000000002522000-memory.dmp

    Filesize

    648KB

  • memory/1496-67-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/1496-110-0x0000000002480000-0x0000000002522000-memory.dmp

    Filesize

    648KB

  • memory/1496-108-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/1496-70-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/1496-73-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/1496-76-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/1496-79-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/1496-82-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/1496-85-0x0000000002480000-0x0000000002522000-memory.dmp

    Filesize

    648KB

  • memory/1496-88-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/1496-93-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/1496-102-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/1496-99-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/1688-59-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/1688-64-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/1688-63-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/1688-60-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/2440-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/2440-2-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/2440-68-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB