Analysis

  • max time kernel
    139s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-10-2024 17:21

General

  • Target

    GoogleChrome.exe

  • Size

    690KB

  • MD5

    5818f4fecb0dcc52227035dc0d88830b

  • SHA1

    ccda411e1e7c643308f8c643b384ec979c185787

  • SHA256

    1416bd55b04a4d8299c3e976e4e6a160850471e330d25f332f70d8ca618de894

  • SHA512

    b245d21747c40722fd8c53a8bef3acb17aabce894ec6213547a2554f4c4f168b1d43f9a2f1383f4bfd4ccd436e3034d7aa64c6118aff9d886ea39c05ad7bb81f

  • SSDEEP

    12288:jTEgdfY8l6hdV6l4et8klwIdctVdrcdirMBgJS9UOIK3:8UwBD6lbt8ufcVrcdiMCJSuOIK3

Malware Config

Extracted

Family

quasar

Version

1.4.0

Botnet

Test

C2

scambaiting2022.ddns.net:25565

192.168.1.3:25565

Mutex

41845399-4858-4791-bd1c-b2526f38e8cc

Attributes
  • encryption_key

    77693888CF811B44AE75658ADBCA8897192A96FF

  • install_name

    update.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Chrome Update

  • subdirectory

    Chrome

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\GoogleChrome.exe
    "C:\Users\Admin\AppData\Local\Temp\GoogleChrome.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3864
    • C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "Chrome Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\GoogleChrome.exe" /rl HIGHEST /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:3828
    • C:\Users\Admin\AppData\Roaming\Chrome\update.exe
      "C:\Users\Admin\AppData\Roaming\Chrome\update.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2684
      • C:\Windows\SYSTEM32\schtasks.exe
        "schtasks" /create /tn "Chrome Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Chrome\update.exe" /rl HIGHEST /f
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:3484

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Chrome\update.exe

    Filesize

    690KB

    MD5

    5818f4fecb0dcc52227035dc0d88830b

    SHA1

    ccda411e1e7c643308f8c643b384ec979c185787

    SHA256

    1416bd55b04a4d8299c3e976e4e6a160850471e330d25f332f70d8ca618de894

    SHA512

    b245d21747c40722fd8c53a8bef3acb17aabce894ec6213547a2554f4c4f168b1d43f9a2f1383f4bfd4ccd436e3034d7aa64c6118aff9d886ea39c05ad7bb81f

  • memory/2684-9-0x00007FFA73D40000-0x00007FFA74801000-memory.dmp

    Filesize

    10.8MB

  • memory/2684-10-0x00007FFA73D40000-0x00007FFA74801000-memory.dmp

    Filesize

    10.8MB

  • memory/2684-11-0x000000001B090000-0x000000001B0E0000-memory.dmp

    Filesize

    320KB

  • memory/2684-12-0x000000001B6C0000-0x000000001B772000-memory.dmp

    Filesize

    712KB

  • memory/2684-13-0x00007FFA73D40000-0x00007FFA74801000-memory.dmp

    Filesize

    10.8MB

  • memory/3864-0-0x00007FFA73D43000-0x00007FFA73D45000-memory.dmp

    Filesize

    8KB

  • memory/3864-1-0x0000000000A30000-0x0000000000AE2000-memory.dmp

    Filesize

    712KB

  • memory/3864-2-0x00007FFA73D40000-0x00007FFA74801000-memory.dmp

    Filesize

    10.8MB

  • memory/3864-8-0x00007FFA73D40000-0x00007FFA74801000-memory.dmp

    Filesize

    10.8MB