Analysis

  • max time kernel
    146s
  • max time network
    152s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240611-en
  • resource tags

    arch:x64arch:x86image:win11-20240611-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    24-06-2024 20:24

General

  • Target

    63137b209b34ce9db1febea79c228fc16eeefc2db38615a4c519bcd0a38be08d.exe

  • Size

    4.8MB

  • MD5

    5d0f595f8dc0ef8ff2fc9fd7760514b4

  • SHA1

    8f347695fea2fb987d38d470f98e69d9291186a3

  • SHA256

    63137b209b34ce9db1febea79c228fc16eeefc2db38615a4c519bcd0a38be08d

  • SHA512

    0f7ba781af0cf6933f68e122046192ff3ecd5b75edc5170469bd65bc14dafd0ddbfd3ca3545c1d38a15dae88c33a4377e96c2cad5d8d59c14e6d9499a2b1b238

  • SSDEEP

    98304:mkgOngWJBGdkqP6JWP6Sn0tU+du+QtU7TURML9f6JU3QSBSlxJjj1:jqdkqyIP6y0tnPL7TV9HXBSTJjp

Malware Config

Extracted

Family

socks5systemz

C2

bokcmff.com

http://bokcmff.com/search/?q=67e28dd8655df07d165afd1f7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a271ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff613c6ef929a3c

http://bokcmff.com/search/?q=67e28dd8655df07d165afd1f7c27d78406abdd88be4b12eab517aa5c96bd86e990814d845a8bbc896c58e713bc90c91936b5281fc235a925ed3e01d6bd974a95129070b616e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee9c983dcd689611

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\63137b209b34ce9db1febea79c228fc16eeefc2db38615a4c519bcd0a38be08d.exe
    "C:\Users\Admin\AppData\Local\Temp\63137b209b34ce9db1febea79c228fc16eeefc2db38615a4c519bcd0a38be08d.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:5100
    • C:\Users\Admin\AppData\Local\Temp\is-80ULM.tmp\63137b209b34ce9db1febea79c228fc16eeefc2db38615a4c519bcd0a38be08d.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-80ULM.tmp\63137b209b34ce9db1febea79c228fc16eeefc2db38615a4c519bcd0a38be08d.tmp" /SL5="$1301EA,4749858,54272,C:\Users\Admin\AppData\Local\Temp\63137b209b34ce9db1febea79c228fc16eeefc2db38615a4c519bcd0a38be08d.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4516
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:3196
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:4832

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\is-80ULM.tmp\63137b209b34ce9db1febea79c228fc16eeefc2db38615a4c519bcd0a38be08d.tmp

    Filesize

    680KB

    MD5

    7aae617848243476f1715d942fc9f929

    SHA1

    7ab84d0415f025db25fd5091c1ef5b0f543c5060

    SHA256

    9ac0c72d76944fdc7a0b34cfe364485e909e2b5e97ea30b99c8815eafeb5380e

    SHA512

    1ceab0ddf5d52523c6c8d42426d4c9d08a2fe8bd118e21a1d590b46f9afec50938f0f8903b892786535b6e468014e24b0c71d17c6bc3876b762051caaa2fd42c

  • C:\Users\Admin\AppData\Local\Temp\is-KNR0S.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

    Filesize

    2.7MB

    MD5

    9a6bd5db33f2b2d034748003a505b46d

    SHA1

    d872afe7a6a14259b94ae3ad0e407ede1c6bcdc4

    SHA256

    81b985e701a558e5d01bc5c3d00d413f747388365fbbc5c7824c28219afa88b6

    SHA512

    8e08a9f452aea395ea698e1ceb2289e54c82df45cc5db2f19711ffe43ca1a6daff7098b74b0398fd9a9cd0a523490aa4d46db8ce9591c9df975798d1f2df798f

  • memory/3196-60-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/3196-59-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/3196-65-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3196-64-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/4516-70-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4516-16-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4832-74-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/4832-94-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/4832-118-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/4832-115-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/4832-71-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/4832-111-0x0000000000A40000-0x0000000000AE2000-memory.dmp

    Filesize

    648KB

  • memory/4832-77-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/4832-80-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/4832-83-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/4832-86-0x0000000000A40000-0x0000000000AE2000-memory.dmp

    Filesize

    648KB

  • memory/4832-89-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/4832-68-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/4832-97-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/4832-100-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/4832-103-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/4832-106-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/4832-109-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/4832-110-0x0000000000A40000-0x0000000000AE2000-memory.dmp

    Filesize

    648KB

  • memory/5100-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/5100-2-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/5100-69-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB