Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240508-en
  • resource tags

    arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-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

erswddi.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\126e6e4e4903dbcd55eccd2728b16678ed7a8b76662b6939020b79298e2e1e49.exe
    "C:\Users\Admin\AppData\Local\Temp\126e6e4e4903dbcd55eccd2728b16678ed7a8b76662b6939020b79298e2e1e49.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4760
    • C:\Users\Admin\AppData\Local\Temp\is-J81IR.tmp\126e6e4e4903dbcd55eccd2728b16678ed7a8b76662b6939020b79298e2e1e49.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-J81IR.tmp\126e6e4e4903dbcd55eccd2728b16678ed7a8b76662b6939020b79298e2e1e49.tmp" /SL5="$70062,4756942,54272,C:\Users\Admin\AppData\Local\Temp\126e6e4e4903dbcd55eccd2728b16678ed7a8b76662b6939020b79298e2e1e49.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2116
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:1748
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:3628

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\is-J81IR.tmp\126e6e4e4903dbcd55eccd2728b16678ed7a8b76662b6939020b79298e2e1e49.tmp

    Filesize

    680KB

    MD5

    6faef8d03f5a5daec4663607ffbfa3f2

    SHA1

    60d93a5d14dff756544f784051dfd98ea92ab8b0

    SHA256

    e6b403dd1141a7fb21e3363ce6ea4b1a37703bada1ba39187e099ab035186cbe

    SHA512

    9c68713fde2727d9853dcb375df6caa1bedd4b5956ff3fa92aded0d868667838912e1364cbe174be4b8f293424c9b6bccda1ff880bec25e6c7d141bf61cb772e

  • C:\Users\Admin\AppData\Local\Temp\is-VUTU2.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/1748-64-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/1748-59-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/1748-60-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/1748-65-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/2116-71-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2116-12-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/3628-72-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/3628-86-0x0000000000A80000-0x0000000000B22000-memory.dmp

    Filesize

    648KB

  • memory/3628-69-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/3628-117-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/3628-114-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/3628-111-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/3628-75-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/3628-76-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/3628-79-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/3628-82-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/3628-85-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/3628-67-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/3628-91-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/3628-96-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/3628-99-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/3628-102-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/3628-105-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/3628-108-0x0000000000400000-0x00000000006C3000-memory.dmp

    Filesize

    2.8MB

  • memory/4760-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4760-2-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/4760-70-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB