Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240508-en
  • resource tags

    arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    25-06-2024 11:32

General

  • Target

    8b8e539891f62d1f6291059714555844d7595bb45e1232647adbd500347676c4.exe

  • Size

    5.1MB

  • MD5

    ff76ffecd79543730a94f222b0da53a6

  • SHA1

    6e76c7fda9e08cb6f9065aa56e2dfaaf1754946c

  • SHA256

    8b8e539891f62d1f6291059714555844d7595bb45e1232647adbd500347676c4

  • SHA512

    3c3afaaaf19427d2744482e3b2258ec987fee2728aae94c537902c5eb94aa8deabf5207d41a1bd091e4c3c46cc52ac4cf938c836c15300cb9f1ea924ca871806

  • SSDEEP

    98304:mDqWBfmZVOnEMzuEhCcAOR90PXIFS4O5dCe5ZUy63bN3KH2uq:QqWhGWoPXIFSJ5dCkWDW2z

Malware Config

Extracted

Family

socks5systemz

C2

ejzgnsc.ua

Signatures

  • Detect Socks5Systemz Payload 1 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 IoCs
  • Unexpected DNS network traffic destination 3 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\8b8e539891f62d1f6291059714555844d7595bb45e1232647adbd500347676c4.exe
    "C:\Users\Admin\AppData\Local\Temp\8b8e539891f62d1f6291059714555844d7595bb45e1232647adbd500347676c4.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1780
    • C:\Users\Admin\AppData\Local\Temp\is-R0DLI.tmp\8b8e539891f62d1f6291059714555844d7595bb45e1232647adbd500347676c4.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-R0DLI.tmp\8b8e539891f62d1f6291059714555844d7595bb45e1232647adbd500347676c4.tmp" /SL5="$50216,5070983,54272,C:\Users\Admin\AppData\Local\Temp\8b8e539891f62d1f6291059714555844d7595bb45e1232647adbd500347676c4.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:3992
      • C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition32.exe
        "C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:2924
      • C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition32.exe
        "C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:1512

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition32.exe

    Filesize

    3.2MB

    MD5

    266acaad5b14cce7536a3616ddaafcc0

    SHA1

    9526305efeabff0554aec83844ec0fdaa0fb4b30

    SHA256

    9cd6ae1a63f985120d0c67a8a4f0f2e01e47bc28f2e5af51b6adba63f245d0d4

    SHA512

    994fac24a549b74f71001f7f24058fd375f48edfbeab5be6c65e66326da407cc2a0e4820dac48e53834ebb9f0927bf0bcd517b46c80d317ed95b5593b57cc7f7

  • C:\Users\Admin\AppData\Local\Temp\is-7J1ON.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-R0DLI.tmp\8b8e539891f62d1f6291059714555844d7595bb45e1232647adbd500347676c4.tmp

    Filesize

    680KB

    MD5

    4432a9de5fb701b2be5a9dc45a63fd7e

    SHA1

    21d4ced081ca682aeccb62dd4eca0aff561629de

    SHA256

    b766d61ae8f3c4743b2533799355b483ec543fb98e158a02bab76e9b6319dd9d

    SHA512

    40ef72a9be46f601310a54fb390d35cd90f991043faa17c715b44cc80ce25a46eaf80dcf5bb5ae111742fab012dcbc71e88befbe12053e45ebed18522e5a7be2

  • memory/1512-91-0x0000000000400000-0x000000000073A000-memory.dmp

    Filesize

    3.2MB

  • memory/1512-76-0x0000000000400000-0x000000000073A000-memory.dmp

    Filesize

    3.2MB

  • memory/1512-117-0x0000000000400000-0x000000000073A000-memory.dmp

    Filesize

    3.2MB

  • memory/1512-114-0x0000000000400000-0x000000000073A000-memory.dmp

    Filesize

    3.2MB

  • memory/1512-111-0x0000000000400000-0x000000000073A000-memory.dmp

    Filesize

    3.2MB

  • memory/1512-108-0x0000000000400000-0x000000000073A000-memory.dmp

    Filesize

    3.2MB

  • memory/1512-105-0x0000000000400000-0x000000000073A000-memory.dmp

    Filesize

    3.2MB

  • memory/1512-67-0x0000000000400000-0x000000000073A000-memory.dmp

    Filesize

    3.2MB

  • memory/1512-69-0x0000000000400000-0x000000000073A000-memory.dmp

    Filesize

    3.2MB

  • memory/1512-102-0x0000000000400000-0x000000000073A000-memory.dmp

    Filesize

    3.2MB

  • memory/1512-99-0x0000000000400000-0x000000000073A000-memory.dmp

    Filesize

    3.2MB

  • memory/1512-72-0x0000000000400000-0x000000000073A000-memory.dmp

    Filesize

    3.2MB

  • memory/1512-75-0x0000000000400000-0x000000000073A000-memory.dmp

    Filesize

    3.2MB

  • memory/1512-96-0x0000000000400000-0x000000000073A000-memory.dmp

    Filesize

    3.2MB

  • memory/1512-79-0x0000000000400000-0x000000000073A000-memory.dmp

    Filesize

    3.2MB

  • memory/1512-82-0x0000000000400000-0x000000000073A000-memory.dmp

    Filesize

    3.2MB

  • memory/1512-85-0x0000000000400000-0x000000000073A000-memory.dmp

    Filesize

    3.2MB

  • memory/1512-87-0x0000000000A90000-0x0000000000B32000-memory.dmp

    Filesize

    648KB

  • memory/1780-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1780-70-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1780-2-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/2924-60-0x0000000000400000-0x000000000073A000-memory.dmp

    Filesize

    3.2MB

  • memory/2924-59-0x0000000000400000-0x000000000073A000-memory.dmp

    Filesize

    3.2MB

  • memory/2924-64-0x0000000000400000-0x000000000073A000-memory.dmp

    Filesize

    3.2MB

  • memory/2924-65-0x0000000000400000-0x000000000073A000-memory.dmp

    Filesize

    3.2MB

  • memory/3992-16-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/3992-71-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB