Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-06-2024 05:44

General

  • Target

    378e3aa0f403b170d111d9725988334231b146e8a995483906e1a52aec1ecfc0.exe

  • Size

    5.1MB

  • MD5

    bd5c2954ad05fb25b65d78b7293c1051

  • SHA1

    7e357e10c6defff5674aff6764ab8887d232d294

  • SHA256

    378e3aa0f403b170d111d9725988334231b146e8a995483906e1a52aec1ecfc0

  • SHA512

    88dc1ce69ded4446ec3887cf8d1e90acc90254879b8fd68e94aedd0c935cbbf932fac3ab12bdda90cb9c12ce19fbef1799b28b99044474f135047d4caa08e1af

  • SSDEEP

    98304:mbDwKnagP3i1C7CtcFeel7nvgfofs4dt/DJ50OEltDmP:AaOgO+MvG94df5COP

Malware Config

Extracted

Family

socks5systemz

C2

ayjepdv.ru

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\378e3aa0f403b170d111d9725988334231b146e8a995483906e1a52aec1ecfc0.exe
    "C:\Users\Admin\AppData\Local\Temp\378e3aa0f403b170d111d9725988334231b146e8a995483906e1a52aec1ecfc0.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4148
    • C:\Users\Admin\AppData\Local\Temp\is-LDBL5.tmp\378e3aa0f403b170d111d9725988334231b146e8a995483906e1a52aec1ecfc0.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-LDBL5.tmp\378e3aa0f403b170d111d9725988334231b146e8a995483906e1a52aec1ecfc0.tmp" /SL5="$401FC,5129191,54272,C:\Users\Admin\AppData\Local\Temp\378e3aa0f403b170d111d9725988334231b146e8a995483906e1a52aec1ecfc0.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2824
      • C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition.exe
        "C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition.exe" -i
        3⤵
        • Executes dropped EXE
        PID:4944
      • C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition.exe
        "C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition.exe" -s
        3⤵
        • Executes dropped EXE
        PID:4692

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition.exe

    Filesize

    3.1MB

    MD5

    5310375253cd0e0fbb5c15cf1d5260d5

    SHA1

    3b41855c12305b36d6de72132e31f686460a0bc2

    SHA256

    af510ed4f33cceb25f041db707a7f3c24cfc54deaac1082ab1c2d437ad94e893

    SHA512

    3194fdcf48bdffdf34b4b6c5e968deda24158227609dc7d4896d39735e4f98c9c4b50187d594dbb525e8f00fe31de7ff2f4402fa7e27512218c13a56ae3305ca

  • C:\Users\Admin\AppData\Local\Temp\is-H67S5.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-LDBL5.tmp\378e3aa0f403b170d111d9725988334231b146e8a995483906e1a52aec1ecfc0.tmp

    Filesize

    680KB

    MD5

    c570b38a29e1d53c38a12bca682672e7

    SHA1

    f7c6166feae7ab99a125006225622e9929a29aa6

    SHA256

    3eef7973b2a7cf4cee4907c6c19ad750359a3d08f65f741bc22a26f92f6cdf36

    SHA512

    f17ddfeccc853f5507d548308b06c5834490d798a96d9de81620b8f8165a10ab31ee6f7912ccd8e1ff04583449c4ac1516b5cc1b165f8a4aa8e387f51e19fcc6

  • memory/2824-13-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2824-70-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4148-69-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4148-2-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/4148-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4692-96-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/4692-83-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/4692-67-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/4692-114-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/4692-111-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/4692-71-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/4692-74-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/4692-77-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/4692-80-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/4692-108-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/4692-86-0x0000000000A80000-0x0000000000B22000-memory.dmp

    Filesize

    648KB

  • memory/4692-90-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/4692-93-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/4692-105-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/4692-99-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/4692-102-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/4944-59-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/4944-64-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/4944-60-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB

  • memory/4944-65-0x0000000000400000-0x0000000000726000-memory.dmp

    Filesize

    3.1MB