Analysis

  • max time kernel
    149s
  • max time network
    150s
  • 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 19:09

General

  • Target

    41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.exe

  • Size

    5.8MB

  • MD5

    9a45bdb668302c4bc910d609fceb4084

  • SHA1

    f364544204854fc77d840786e1e969e45a20fe1b

  • SHA256

    41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70

  • SHA512

    86894a40f72d5b227f27eb47f0dbc5b1c2bee038395ff7db2885fe7042ef50eba19a7ca527819eced247fbe18002784289b107a8d46a5e4e2021e791e3889541

  • SSDEEP

    98304:mEvhqnnY7fBzYk4ZZdmQ7Q5hrHTz3NbboxMwksRyd9kq2CEDoT78+3:/vhhfcZEOYhrHTBbGALlyoE+3

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\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.exe
    "C:\Users\Admin\AppData\Local\Temp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2656
    • C:\Users\Admin\AppData\Local\Temp\is-0I97N.tmp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-0I97N.tmp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.tmp" /SL5="$4023E,5775656,54272,C:\Users\Admin\AppData\Local\Temp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:396
      • C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
        "C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:3900
      • C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
        "C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:5052

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    3.4MB

    MD5

    f7c5f033bae9038db16341c15f530d12

    SHA1

    2e4936c96f8e8c3f82a322db4f8e2c975df75e58

    SHA256

    318da3b148a41d15ee1f60c5fdb71145a3459bd673971503b5fc19c7bdbd4683

    SHA512

    5967a6699f4ce7255505632f8c9462dcb55335a22cba903a20a11fad66d322864f2d351a434e386b53f62350cba1d89163c6fa08ca6f816c43d6378c42e133a4

  • C:\Users\Admin\AppData\Local\Temp\is-0I97N.tmp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.tmp

    Filesize

    680KB

    MD5

    ef9105d68de970efad785e01b21e4e2b

    SHA1

    7fe8801a3e86814972da63a7a943bdc5e31d8888

    SHA256

    381198ca0669ab760f6f9b84e39c39ab5e870f65d17d03ed0dc572a1c602364a

    SHA512

    e388cbf32a4d833c0e4c6c1a129515b4d12eac5b333f2aec39e741d3a0da856c5923d47cf4d3083ad030f7f07b9214261b2b9119720920dd42929eeb617e779c

  • C:\Users\Admin\AppData\Local\Temp\is-E51J5.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-E51J5.tmp\_isetup\_isdecmp.dll

    Filesize

    32KB

    MD5

    b6f11a0ab7715f570f45900a1fe84732

    SHA1

    77b1201e535445af5ea94c1b03c0a1c34d67a77b

    SHA256

    e47dd306a9854599f02bc1b07ca6dfbd5220f8a1352faa9616d1a327de0bbf67

    SHA512

    78a757e67d21eb7cc95954df15e3eeff56113d6b40fb73f0c5f53304265cc52c79125d6f1b3655b64f9a411711b5b70f746080d708d7c222f4e65bad64b1b771

  • memory/396-11-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/396-77-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2656-76-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/2656-3-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/2656-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/3900-69-0x0000000000400000-0x0000000000776000-memory.dmp

    Filesize

    3.5MB

  • memory/3900-71-0x0000000000400000-0x0000000000776000-memory.dmp

    Filesize

    3.5MB

  • memory/3900-65-0x0000000000400000-0x0000000000776000-memory.dmp

    Filesize

    3.5MB

  • memory/3900-66-0x0000000000400000-0x0000000000776000-memory.dmp

    Filesize

    3.5MB

  • memory/5052-91-0x0000000000400000-0x0000000000776000-memory.dmp

    Filesize

    3.5MB

  • memory/5052-97-0x0000000000400000-0x0000000000776000-memory.dmp

    Filesize

    3.5MB

  • memory/5052-78-0x0000000000400000-0x0000000000776000-memory.dmp

    Filesize

    3.5MB

  • memory/5052-81-0x0000000000400000-0x0000000000776000-memory.dmp

    Filesize

    3.5MB

  • memory/5052-82-0x0000000000400000-0x0000000000776000-memory.dmp

    Filesize

    3.5MB

  • memory/5052-85-0x0000000000400000-0x0000000000776000-memory.dmp

    Filesize

    3.5MB

  • memory/5052-88-0x0000000000400000-0x0000000000776000-memory.dmp

    Filesize

    3.5MB

  • memory/5052-75-0x0000000000400000-0x0000000000776000-memory.dmp

    Filesize

    3.5MB

  • memory/5052-94-0x0000000000A80000-0x0000000000B22000-memory.dmp

    Filesize

    648KB

  • memory/5052-73-0x0000000000400000-0x0000000000776000-memory.dmp

    Filesize

    3.5MB

  • memory/5052-102-0x0000000000400000-0x0000000000776000-memory.dmp

    Filesize

    3.5MB

  • memory/5052-105-0x0000000000400000-0x0000000000776000-memory.dmp

    Filesize

    3.5MB

  • memory/5052-108-0x0000000000400000-0x0000000000776000-memory.dmp

    Filesize

    3.5MB

  • memory/5052-111-0x0000000000400000-0x0000000000776000-memory.dmp

    Filesize

    3.5MB

  • memory/5052-114-0x0000000000400000-0x0000000000776000-memory.dmp

    Filesize

    3.5MB

  • memory/5052-117-0x0000000000400000-0x0000000000776000-memory.dmp

    Filesize

    3.5MB

  • memory/5052-120-0x0000000000400000-0x0000000000776000-memory.dmp

    Filesize

    3.5MB

  • memory/5052-123-0x0000000000400000-0x0000000000776000-memory.dmp

    Filesize

    3.5MB