Analysis

  • max time kernel
    147s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240611-en
  • resource tags

    arch:x64arch:x86image:win11-20240611-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    24-06-2024 17:03

General

  • Target

    1f2e8d0df5751478dc16fdcf6f5fa0d0f5ef4c14eb71f7b9f95b180cf5f86a43.exe

  • Size

    5.0MB

  • MD5

    1f782a30f5dfaa6ea223181d7a41d103

  • SHA1

    32cc6a195b9f5c4c683b8fb41e2fd91ed268e64f

  • SHA256

    1f2e8d0df5751478dc16fdcf6f5fa0d0f5ef4c14eb71f7b9f95b180cf5f86a43

  • SHA512

    881d5fa85e448bd8dde025e787dba49bb41f0a0d52a0f9594e090eca3232cef3fae14761984dd098de597ec630b06574166b1a424cbf478c7186e1041100fb32

  • SSDEEP

    98304:ma45N1Wf9OUP+l6bH3iTkYyCiD+ikyx22QiGSw3O2wa8D:H45HcyTkYyRb62ySw3O2T8D

Malware Config

Extracted

Family

socks5systemz

C2

ersjaio.ua

http://ersjaio.ua/search/?q=67e28dd86c5af52d4607af197c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ee8889b5e4fa9281ae978a571ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff613c4e793923a

http://ersjaio.ua/search/?q=67e28dd86c5af52d4607af197c27d78406abdd88be4b12eab517aa5c96bd86ee968448845a8bbc896c58e713bc90c91b36b5281fc235a925ed3e06d6bd974a95129070b616e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee9c983fc5699e17

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\1f2e8d0df5751478dc16fdcf6f5fa0d0f5ef4c14eb71f7b9f95b180cf5f86a43.exe
    "C:\Users\Admin\AppData\Local\Temp\1f2e8d0df5751478dc16fdcf6f5fa0d0f5ef4c14eb71f7b9f95b180cf5f86a43.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4380
    • C:\Users\Admin\AppData\Local\Temp\is-6S0I7.tmp\1f2e8d0df5751478dc16fdcf6f5fa0d0f5ef4c14eb71f7b9f95b180cf5f86a43.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-6S0I7.tmp\1f2e8d0df5751478dc16fdcf6f5fa0d0f5ef4c14eb71f7b9f95b180cf5f86a43.tmp" /SL5="$6023A,4956183,54272,C:\Users\Admin\AppData\Local\Temp\1f2e8d0df5751478dc16fdcf6f5fa0d0f5ef4c14eb71f7b9f95b180cf5f86a43.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4288
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:2072
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:1196

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\is-6S0I7.tmp\1f2e8d0df5751478dc16fdcf6f5fa0d0f5ef4c14eb71f7b9f95b180cf5f86a43.tmp

    Filesize

    680KB

    MD5

    eaa8b83db483f98a3627895df4b475e9

    SHA1

    8cbdb9e28949fa30471d0c3595af4ff4bc93c8c5

    SHA256

    b33ab0799c57e799dab21427b4b066e8d10b23e7ea0da56c238d9629c6595077

    SHA512

    373088b3d8abefc5a0f70ebd46b2c803a55ef2cf906d057f124fa7508b1cc3c4ba56983ebe07a204aa8b284d9a75a61c702b4117fef76c1fd76bbc44bd995627

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

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe

    Filesize

    3.0MB

    MD5

    586b4eb586fda29e2715ad3847344426

    SHA1

    2c531d77b3e89f62f14d288e59b1bff28a887fb2

    SHA256

    b35d97d894d9f151b0d2ae8b79692753fee50336f1202731517931e7225d5ff1

    SHA512

    fdffe660158e3cae258b4fe60fbe1fcc08056cbbef3eb9d1971be14569e7f1363403d2b877599758156d689ea743a84b846585d645f91ea378a1f2f9b71f4a65

  • memory/1196-101-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/1196-104-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/1196-79-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/1196-119-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/1196-82-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/1196-116-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/1196-112-0x0000000000A00000-0x0000000000AA2000-memory.dmp

    Filesize

    648KB

  • memory/1196-67-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/1196-69-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/1196-111-0x0000000000A00000-0x0000000000AA2000-memory.dmp

    Filesize

    648KB

  • memory/1196-110-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/1196-85-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/1196-75-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/1196-76-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/1196-107-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/1196-98-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/1196-72-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/1196-88-0x0000000000A00000-0x0000000000AA2000-memory.dmp

    Filesize

    648KB

  • memory/1196-89-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/1196-95-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/2072-60-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/2072-65-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/2072-63-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/2072-59-0x0000000000400000-0x00000000006FA000-memory.dmp

    Filesize

    3.0MB

  • memory/4288-13-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4288-71-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4380-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4380-2-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/4380-70-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB