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Analysis

  • max time kernel
    156s
  • max time network
    23s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    31/12/2023, 03:43

General

  • Target

    26ca5c7aa6289e9598ce6cc6d9d03f47.exe

  • Size

    115KB

  • MD5

    26ca5c7aa6289e9598ce6cc6d9d03f47

  • SHA1

    00b1d3ada6b8a003d9878bd6f4bfc0f2433844c7

  • SHA256

    af812aa371ec2ff8b43951598cb24c2b598d7b837a125e36192d780104668a7f

  • SHA512

    b384012b8695a339668bd9808607b86969e80ce1468d84d85926c490a50b2450ffebab84772bb9869559e25e36a16de47749acb6e853a0af46d669fbcd4d71bc

  • SSDEEP

    3072:SKcWmjRrz3ZKcWmjRrz3IChT/zXrfgvo4fyyA7wE5:hGyGIwrz74Auyns8

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\26ca5c7aa6289e9598ce6cc6d9d03f47.exe
    "C:\Users\Admin\AppData\Local\Temp\26ca5c7aa6289e9598ce6cc6d9d03f47.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2264
    • C:\Users\Admin\AppData\Local\Temp\gfNRLlLcKJRD3if.exe
      C:\Users\Admin\AppData\Local\Temp\gfNRLlLcKJRD3if.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2784
      • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
        dw20.exe -x -s 376
        3⤵
        • Suspicious behavior: GetForegroundWindowSpam
        PID:2608
    • C:\Windows\CTS.exe
      "C:\Windows\CTS.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      PID:2708

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\CTS.exe

    Filesize

    59KB

    MD5

    5efd390d5f95c8191f5ac33c4db4b143

    SHA1

    42d81b118815361daa3007f1a40f1576e9a9e0bc

    SHA256

    6028434636f349d801465f77af3a1e387a9c5032942ca6cadb6506d0800f2a74

    SHA512

    720fbe253483dc034307a57a2860c8629a760f883603198d1213f5290b7f236bf0f5f237728ebed50962be83dc7dc4abe61a1e9a55218778495fc6580eb20b3d

  • \Users\Admin\AppData\Local\Temp\gfNRLlLcKJRD3if.exe

    Filesize

    56KB

    MD5

    e115521ba14b75f53dcdff087ec6898f

    SHA1

    87103a892bb514a93d485fba221bacb9da3aae25

    SHA256

    59b284d0ad4c2634938e70fae67d9048bd98422d052fbd745a9b80b5fae7ae29

    SHA512

    ab3d097bcf11bf7327a28124052b210f5fb13b9bfb9b7376cae1ba5c30182a330506935288a7fe06b7e3fdd82b57f5c31638f1c301738342819c772b346fa35a

  • memory/2264-0-0x0000000000150000-0x0000000000167000-memory.dmp

    Filesize

    92KB

  • memory/2264-10-0x0000000000150000-0x0000000000167000-memory.dmp

    Filesize

    92KB

  • memory/2264-14-0x00000000000E0000-0x00000000000F7000-memory.dmp

    Filesize

    92KB

  • memory/2264-22-0x00000000000E0000-0x00000000000F7000-memory.dmp

    Filesize

    92KB

  • memory/2608-19-0x0000000000470000-0x0000000000471000-memory.dmp

    Filesize

    4KB

  • memory/2708-18-0x00000000009F0000-0x0000000000A07000-memory.dmp

    Filesize

    92KB

  • memory/2784-16-0x000007FEF5960000-0x000007FEF62FD000-memory.dmp

    Filesize

    9.6MB

  • memory/2784-17-0x0000000002090000-0x0000000002110000-memory.dmp

    Filesize

    512KB

  • memory/2784-24-0x0000000002090000-0x0000000002110000-memory.dmp

    Filesize

    512KB

  • memory/2784-23-0x000007FEF5960000-0x000007FEF62FD000-memory.dmp

    Filesize

    9.6MB