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Analysis

  • max time kernel
    143s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/07/2024, 10:22

General

  • Target

    dda275edb8ba59a8dfdb94fa81d0e2562876704dd0949ad4505f313f053bf98f.exe

  • Size

    5.7MB

  • MD5

    da702a3afe8c859d6b6a6e375d50443d

  • SHA1

    4636460e13df41c1d19a16bbbcbe402b426bc843

  • SHA256

    dda275edb8ba59a8dfdb94fa81d0e2562876704dd0949ad4505f313f053bf98f

  • SHA512

    e2d090e0d2e97c98020f97dd1085923f31f7da7807d57be2ba170792002cc9f57876466e7b2c562739492c2a6f92c13e196674dfcac8414af215b5fc2756cebb

  • SSDEEP

    98304:CWzGKJdcrlEdywyyT0X7RpUIIbxi+xfYmEsbbKRC03/ToLOBuHwbDrx2O817vCRM:XdcrlEdywNU2/bxlYxGKRC03/5kHwPEB

Malware Config

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\dda275edb8ba59a8dfdb94fa81d0e2562876704dd0949ad4505f313f053bf98f.exe
    "C:\Users\Admin\AppData\Local\Temp\dda275edb8ba59a8dfdb94fa81d0e2562876704dd0949ad4505f313f053bf98f.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4844
    • C:\Users\Admin\AppData\Local\Temp\is-G3VG7.tmp\dda275edb8ba59a8dfdb94fa81d0e2562876704dd0949ad4505f313f053bf98f.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-G3VG7.tmp\dda275edb8ba59a8dfdb94fa81d0e2562876704dd0949ad4505f313f053bf98f.tmp" /SL5="$12015C,5769847,54272,C:\Users\Admin\AppData\Local\Temp\dda275edb8ba59a8dfdb94fa81d0e2562876704dd0949ad4505f313f053bf98f.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4740
      • C:\Users\Admin\AppData\Local\B-Codec Pack\bcodecpack.exe
        "C:\Users\Admin\AppData\Local\B-Codec Pack\bcodecpack.exe" -i
        3⤵
        • Executes dropped EXE
        PID:2148
      • C:\Users\Admin\AppData\Local\B-Codec Pack\bcodecpack.exe
        "C:\Users\Admin\AppData\Local\B-Codec Pack\bcodecpack.exe" -s
        3⤵
        • Executes dropped EXE
        PID:3000

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\B-Codec Pack\bcodecpack.exe

    Filesize

    4.0MB

    MD5

    6b9f6d74b46a81b1b42cc1d607db91b4

    SHA1

    8b467470e032a8604b8ac471679e725bd06d267a

    SHA256

    8c164f8a908f49b5652670065f724806ab9f5dd9ef35313effaadd1ac553b278

    SHA512

    8249ce72350c4e68329765672eded5678e981d7c403eac5e0ce8a063ce16e6f926ce589c696233c001458cac445e3df212e1e26900d6c856ff223305e6609194

  • C:\Users\Admin\AppData\Local\Temp\is-BSRN7.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-G3VG7.tmp\dda275edb8ba59a8dfdb94fa81d0e2562876704dd0949ad4505f313f053bf98f.tmp

    Filesize

    680KB

    MD5

    74d464fd164a96aa5180f9873d40d566

    SHA1

    41cc8d1cadb030f7efcfb70b9adb0d9aa887cd25

    SHA256

    dc60e2be71cbcfd3ee4595ebfb63e0639029b8b744ebee925e63ecb0aa189a14

    SHA512

    3c4b52df5835a6ae7b8d8cc2aa005fb28a76afb54e5d2480d9eb80931e929e5fb9dc6ca16f5efc7ab04cfd003e6f54356d848b7288c0a5cf64854f3be0d6eb4d

  • memory/2148-60-0x0000000000400000-0x0000000000808000-memory.dmp

    Filesize

    4.0MB

  • memory/2148-65-0x0000000000400000-0x0000000000808000-memory.dmp

    Filesize

    4.0MB

  • memory/2148-63-0x0000000000400000-0x0000000000808000-memory.dmp

    Filesize

    4.0MB

  • memory/2148-61-0x0000000000400000-0x0000000000808000-memory.dmp

    Filesize

    4.0MB

  • memory/3000-74-0x0000000000400000-0x0000000000808000-memory.dmp

    Filesize

    4.0MB

  • memory/3000-86-0x0000000000990000-0x0000000000A32000-memory.dmp

    Filesize

    648KB

  • memory/3000-117-0x0000000000400000-0x0000000000808000-memory.dmp

    Filesize

    4.0MB

  • memory/3000-68-0x0000000000400000-0x0000000000808000-memory.dmp

    Filesize

    4.0MB

  • memory/3000-114-0x0000000000400000-0x0000000000808000-memory.dmp

    Filesize

    4.0MB

  • memory/3000-110-0x0000000000990000-0x0000000000A32000-memory.dmp

    Filesize

    648KB

  • memory/3000-71-0x0000000000400000-0x0000000000808000-memory.dmp

    Filesize

    4.0MB

  • memory/3000-109-0x0000000000990000-0x0000000000A32000-memory.dmp

    Filesize

    648KB

  • memory/3000-77-0x0000000000400000-0x0000000000808000-memory.dmp

    Filesize

    4.0MB

  • memory/3000-80-0x0000000000400000-0x0000000000808000-memory.dmp

    Filesize

    4.0MB

  • memory/3000-83-0x0000000000400000-0x0000000000808000-memory.dmp

    Filesize

    4.0MB

  • memory/3000-108-0x0000000000400000-0x0000000000808000-memory.dmp

    Filesize

    4.0MB

  • memory/3000-88-0x0000000000400000-0x0000000000808000-memory.dmp

    Filesize

    4.0MB

  • memory/3000-93-0x0000000000400000-0x0000000000808000-memory.dmp

    Filesize

    4.0MB

  • memory/3000-96-0x0000000000400000-0x0000000000808000-memory.dmp

    Filesize

    4.0MB

  • memory/3000-99-0x0000000000400000-0x0000000000808000-memory.dmp

    Filesize

    4.0MB

  • memory/3000-102-0x0000000000400000-0x0000000000808000-memory.dmp

    Filesize

    4.0MB

  • memory/3000-105-0x0000000000400000-0x0000000000808000-memory.dmp

    Filesize

    4.0MB

  • memory/4740-10-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4740-70-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4844-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4844-69-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4844-2-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB