Analysis

  • max time kernel
    143s
  • max time network
    132s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-06-2024 13:49

General

  • Target

    126e6e4e4903dbcd55eccd2728b16678ed7a8b76662b6939020b79298e2e1e49.exe

  • Size

    4.8MB

  • MD5

    bf3b406ad7decba8bdd13cfd9a61763d

  • SHA1

    f6f6f489456de2c8e2de32edc9d0836aac99ac8e

  • SHA256

    126e6e4e4903dbcd55eccd2728b16678ed7a8b76662b6939020b79298e2e1e49

  • SHA512

    9cffa155e6a14df654ccefd21840252f20e06cde964220715d9de65a0e130f5a3fad67b436150125a4c81bf0155efd892dd198e17a718528c79ff26ff5019f04

  • SSDEEP

    98304:mxnVMyq0gLPDE1fWlElq6PqnEUuQXzECXaV1mZAlqPnmTzGTU:4Vrq0aEpEELPqEUxzDXSoZ2qPn0J

Malware Config

Extracted

Family

socks5systemz

C2

ejuytab.ua

http://ejuytab.ua/search/?q=67e28dd83954f07a4008f8497c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ae8889b5e4fa9281ae978ff71ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ff613c3e8959b3b

http://ejuytab.ua/search/?q=67e28dd83954f07a4008f8497c27d78406abdd88be4b12eab517aa5c96bd86e892824a805a8bbc896c58e713bc90c91f36b5281fc235a925ed3e5cd6bd974a95129070b616e96cc92be510b866db52b2e34aec4c2b14a82966836f23d7f210c7ee9c9838ca6f9716

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\126e6e4e4903dbcd55eccd2728b16678ed7a8b76662b6939020b79298e2e1e49.exe
    "C:\Users\Admin\AppData\Local\Temp\126e6e4e4903dbcd55eccd2728b16678ed7a8b76662b6939020b79298e2e1e49.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4220
    • C:\Users\Admin\AppData\Local\Temp\is-CKM11.tmp\126e6e4e4903dbcd55eccd2728b16678ed7a8b76662b6939020b79298e2e1e49.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-CKM11.tmp\126e6e4e4903dbcd55eccd2728b16678ed7a8b76662b6939020b79298e2e1e49.tmp" /SL5="$40248,4756942,54272,C:\Users\Admin\AppData\Local\Temp\126e6e4e4903dbcd55eccd2728b16678ed7a8b76662b6939020b79298e2e1e49.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2992
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:4024
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:1204

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\is-CKM11.tmp\126e6e4e4903dbcd55eccd2728b16678ed7a8b76662b6939020b79298e2e1e49.tmp

    Filesize

    680KB

    MD5

    6faef8d03f5a5daec4663607ffbfa3f2

    SHA1

    60d93a5d14dff756544f784051dfd98ea92ab8b0

    SHA256

    e6b403dd1141a7fb21e3363ce6ea4b1a37703bada1ba39187e099ab035186cbe

    SHA512

    9c68713fde2727d9853dcb375df6caa1bedd4b5956ff3fa92aded0d868667838912e1364cbe174be4b8f293424c9b6bccda1ff880bec25e6c7d141bf61cb772e

  • C:\Users\Admin\AppData\Local\Temp\is-PBIC8.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

    Filesize

    2.7MB

    MD5

    91d1f39cb3f5d0bdc28352b8c8b51c3e

    SHA1

    80df32f5c255cca0594e8feca01668ec9fc65947

    SHA256

    a291579cd45507b237ad21b0f98ba9021d563bf5039b22c6f148d0d4694b6dee

    SHA512

    badf6a747e7894c3993a3da07b9fbdaaf73bf5ab5e9578861a299ffa6517131859a4334430f8be2dcafc08e8abd2b9c935ef51035cb878d753b356a6cf942bf1

  • memory/1204-98-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/1204-101-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/1204-116-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/1204-113-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/1204-109-0x0000000000A30000-0x0000000000AD2000-memory.dmp

    Filesize

    648KB

  • memory/1204-108-0x0000000000A30000-0x0000000000AD2000-memory.dmp

    Filesize

    648KB

  • memory/1204-66-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/1204-107-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/1204-104-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/1204-70-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/1204-73-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/1204-76-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/1204-79-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/1204-82-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/1204-85-0x0000000000A30000-0x0000000000AD2000-memory.dmp

    Filesize

    648KB

  • memory/1204-89-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/1204-92-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/1204-95-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/2992-10-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2992-69-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4024-64-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/4024-60-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/4024-59-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/4220-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4220-68-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4220-3-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB