Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240426-en
  • resource tags

    arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    30-05-2024 18:10

General

  • Target

    51b3d5c95d102910e5eac811942c33dca87bdddb1069e337810109d8da5d3994.exe

  • Size

    5.6MB

  • MD5

    89f349f034ffed8b61d6965ca6befc64

  • SHA1

    7df5843696a622f6e5f08b990b9c6c00f2d4e96a

  • SHA256

    51b3d5c95d102910e5eac811942c33dca87bdddb1069e337810109d8da5d3994

  • SHA512

    7757abfdbdfcd25b0a0de6a7897523bc17d9f8fc1157f81a2ee2dcc01a5dadd1b7971566698232c3a2358c4ba968832471c848c12ca6414d6eab99b3aa40b271

  • SSDEEP

    98304:mcO9qA69LhiAEoY0FM5OEZQTmHo5lm49Tfx1/uKhK+Ck3tN3:lOgA69LhSoLM5HyfRbmMK+LdN3

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 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\51b3d5c95d102910e5eac811942c33dca87bdddb1069e337810109d8da5d3994.exe
    "C:\Users\Admin\AppData\Local\Temp\51b3d5c95d102910e5eac811942c33dca87bdddb1069e337810109d8da5d3994.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4820
    • C:\Users\Admin\AppData\Local\Temp\is-062C6.tmp\51b3d5c95d102910e5eac811942c33dca87bdddb1069e337810109d8da5d3994.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-062C6.tmp\51b3d5c95d102910e5eac811942c33dca87bdddb1069e337810109d8da5d3994.tmp" /SL5="$40208,5577335,54272,C:\Users\Admin\AppData\Local\Temp\51b3d5c95d102910e5eac811942c33dca87bdddb1069e337810109d8da5d3994.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4980
      • C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
        "C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:3432
      • C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
        "C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:3928

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

    Filesize

    3.3MB

    MD5

    3eab7e829a7de037bf6c6814b609611b

    SHA1

    53ab4625f8e08a19a13874bc0eba39aacc1ac624

    SHA256

    5450d35a1ed2e8a40131d11aff4331c94dedc2d5bb6acee9ad226c9e3311c987

    SHA512

    d4a7b35504efcfb6356523f7a3f48d6e9b9ee9a518fbadb6207351118955f7f4e286a113fcb86bfbd0a46c70818f399681ef149fee98b211a4711a26f9206871

  • C:\Users\Admin\AppData\Local\Temp\is-062C6.tmp\51b3d5c95d102910e5eac811942c33dca87bdddb1069e337810109d8da5d3994.tmp

    Filesize

    680KB

    MD5

    ef9105d68de970efad785e01b21e4e2b

    SHA1

    7fe8801a3e86814972da63a7a943bdc5e31d8888

    SHA256

    381198ca0669ab760f6f9b84e39c39ab5e870f65d17d03ed0dc572a1c602364a

    SHA512

    e388cbf32a4d833c0e4c6c1a129515b4d12eac5b333f2aec39e741d3a0da856c5923d47cf4d3083ad030f7f07b9214261b2b9119720920dd42929eeb617e779c

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

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-DOQNK.tmp\_isetup\_isdecmp.dll

    Filesize

    32KB

    MD5

    b6f11a0ab7715f570f45900a1fe84732

    SHA1

    77b1201e535445af5ea94c1b03c0a1c34d67a77b

    SHA256

    e47dd306a9854599f02bc1b07ca6dfbd5220f8a1352faa9616d1a327de0bbf67

    SHA512

    78a757e67d21eb7cc95954df15e3eeff56113d6b40fb73f0c5f53304265cc52c79125d6f1b3655b64f9a411711b5b70f746080d708d7c222f4e65bad64b1b771

  • memory/3432-66-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3432-69-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3432-65-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3928-79-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3928-89-0x0000000002510000-0x00000000025B2000-memory.dmp

    Filesize

    648KB

  • memory/3928-120-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3928-73-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3928-117-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3928-114-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3928-76-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3928-111-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3928-82-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3928-85-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3928-88-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3928-108-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3928-94-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3928-99-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3928-102-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/3928-105-0x0000000000400000-0x0000000000745000-memory.dmp

    Filesize

    3.3MB

  • memory/4820-2-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/4820-74-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4820-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4980-10-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4980-75-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB