Analysis

  • max time kernel
    293s
  • max time network
    299s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    30-05-2024 22:49

General

  • Target

    40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.exe

  • Size

    6.0MB

  • MD5

    d51bf7907c0524801ea06ff93f3adf2f

  • SHA1

    43ce065024351f6ebff5e476e11979decdc62d17

  • SHA256

    40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28

  • SHA512

    f1893c0b085b76bc9c6ea5b29042f39aa0f878d3efba5ee128d3f04fd683027db986b0080c8acd2335ec503697f59ec478c31ee782ec741a42e248bfe5233343

  • SSDEEP

    98304:mjbNPKmBrFIq1gFUCY68/tXeUlGhneBy8TcaxmX+wy1bht9OoKhQbLvUw6sDb:INPrVFItFUCetXeUQZ8TKydhfOmYO

Malware Config

Signatures

  • Detect Socks5Systemz Payload 1 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 3 IoCs
  • Unexpected DNS network traffic destination 2 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\40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.exe
    "C:\Users\Admin\AppData\Local\Temp\40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2164
    • C:\Users\Admin\AppData\Local\Temp\is-VCC5U.tmp\40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-VCC5U.tmp\40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.tmp" /SL5="$7020E,6048102,54272,C:\Users\Admin\AppData\Local\Temp\40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:3788
      • C:\Users\Admin\AppData\Local\Ringtone Maker FE\ringtonemakerfe.exe
        "C:\Users\Admin\AppData\Local\Ringtone Maker FE\ringtonemakerfe.exe" -i
        3⤵
        • Executes dropped EXE
        PID:4984
      • C:\Users\Admin\AppData\Local\Ringtone Maker FE\ringtonemakerfe.exe
        "C:\Users\Admin\AppData\Local\Ringtone Maker FE\ringtonemakerfe.exe" -s
        3⤵
        • Executes dropped EXE
        PID:3084

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Ringtone Maker FE\ringtonemakerfe.exe

    Filesize

    3.5MB

    MD5

    0f76373df067ec3b2460bc51e1c4b57d

    SHA1

    769bc763f1ffd1fa279e41e7a0eee0050f4906c2

    SHA256

    e15f1aeb2534cadd8927037a0bd4c9c493f3f0ceb026510a802207173d6a65ca

    SHA512

    c3a26ee06ab32a41c7342c84325dcc78535efc94b521298cefc3db91205e7a45ba28049e81017f78ee235169ba4bb3c1c003c64b532e3aad846b19d8b7e92b7b

  • C:\Users\Admin\AppData\Local\Temp\is-VCC5U.tmp\40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.tmp

    Filesize

    680KB

    MD5

    b7289eddee858433e99222c056f54576

    SHA1

    4d972cde373fcf8df259be1b5fcafe44357ea64b

    SHA256

    2bb15c78f05c5000fab1bded860ca7c0059345c5d29fd542210172cada980478

    SHA512

    38eb10b404204958e1dc593118ef186feb647309d84f6396d533818b725ab434173101bc29f11b076ef5c23e406209be8c2be968cc20d7922ae9588b2b9ce22a

  • \Users\Admin\AppData\Local\Temp\is-4L57B.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • \Users\Admin\AppData\Local\Temp\is-4L57B.tmp\_isetup\_isdecmp.dll

    Filesize

    13KB

    MD5

    a813d18268affd4763dde940246dc7e5

    SHA1

    c7366e1fd925c17cc6068001bd38eaef5b42852f

    SHA256

    e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64

    SHA512

    b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4

  • memory/2164-72-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/2164-2-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/2164-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/3084-111-0x0000000000400000-0x000000000077C000-memory.dmp

    Filesize

    3.5MB

  • memory/3084-99-0x0000000000400000-0x000000000077C000-memory.dmp

    Filesize

    3.5MB

  • memory/3084-132-0x0000000000400000-0x000000000077C000-memory.dmp

    Filesize

    3.5MB

  • memory/3084-129-0x0000000000400000-0x000000000077C000-memory.dmp

    Filesize

    3.5MB

  • memory/3084-126-0x0000000000400000-0x000000000077C000-memory.dmp

    Filesize

    3.5MB

  • memory/3084-74-0x0000000000400000-0x000000000077C000-memory.dmp

    Filesize

    3.5MB

  • memory/3084-77-0x0000000000400000-0x000000000077C000-memory.dmp

    Filesize

    3.5MB

  • memory/3084-80-0x0000000000400000-0x000000000077C000-memory.dmp

    Filesize

    3.5MB

  • memory/3084-83-0x0000000000400000-0x000000000077C000-memory.dmp

    Filesize

    3.5MB

  • memory/3084-86-0x0000000000400000-0x000000000077C000-memory.dmp

    Filesize

    3.5MB

  • memory/3084-89-0x0000000000910000-0x00000000009B2000-memory.dmp

    Filesize

    648KB

  • memory/3084-93-0x0000000000400000-0x000000000077C000-memory.dmp

    Filesize

    3.5MB

  • memory/3084-96-0x0000000000400000-0x000000000077C000-memory.dmp

    Filesize

    3.5MB

  • memory/3084-123-0x0000000000400000-0x000000000077C000-memory.dmp

    Filesize

    3.5MB

  • memory/3084-102-0x0000000000400000-0x000000000077C000-memory.dmp

    Filesize

    3.5MB

  • memory/3084-105-0x0000000000400000-0x000000000077C000-memory.dmp

    Filesize

    3.5MB

  • memory/3084-108-0x0000000000400000-0x000000000077C000-memory.dmp

    Filesize

    3.5MB

  • memory/3084-120-0x0000000000400000-0x000000000077C000-memory.dmp

    Filesize

    3.5MB

  • memory/3084-114-0x0000000000400000-0x000000000077C000-memory.dmp

    Filesize

    3.5MB

  • memory/3084-117-0x0000000000400000-0x000000000077C000-memory.dmp

    Filesize

    3.5MB

  • memory/3788-7-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/3788-73-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4984-69-0x0000000000400000-0x000000000077C000-memory.dmp

    Filesize

    3.5MB

  • memory/4984-65-0x0000000000400000-0x000000000077C000-memory.dmp

    Filesize

    3.5MB

  • memory/4984-66-0x0000000000400000-0x000000000077C000-memory.dmp

    Filesize

    3.5MB