Analysis

  • max time kernel
    129s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    28-11-2024 13:43

General

  • Target

    FREEROBUX.exe

  • Size

    3.1MB

  • MD5

    3596db7936f5d66cecbe028d13a91bfc

  • SHA1

    fba98fb2e56e9d729c94a982c6f48eb5aba8930a

  • SHA256

    56e476ecef007b432c2e388802c7541762dae164ceea1b5342b59b4857d2dfac

  • SHA512

    e74596a17e9e9db088292e67e06800098d52b1da6d0870d1239144005632aaebb3b25e7b43d02c481f536b0bdd2a0483fffc5bd55e396c9241c3a7f161340e76

  • SSDEEP

    49152:7v+lL26AaNeWgPhlmVqvMQ7XSKhnn4gLoGd3lTHHB72eh2NT:7vuL26AaNeWgPhlmVqkQ7XSKhnnx

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

192.168.1.230:4782

192.168.1.233:4782

Mutex

e4595bcd-22f9-4826-8d7f-d752e4ca2275

Attributes
  • encryption_key

    9209FE335E49520665B871E3C932A5C8D6821048

  • install_name

    Setup.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 3 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 9 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\FREEROBUX.exe
    "C:\Users\Admin\AppData\Local\Temp\FREEROBUX.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2592
    • C:\Windows\system32\schtasks.exe
      "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Setup.exe" /rl HIGHEST /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:2892
    • C:\Users\Admin\AppData\Roaming\SubDir\Setup.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\Setup.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2948
      • C:\Windows\system32\schtasks.exe
        "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Setup.exe" /rl HIGHEST /f
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:2756

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\SubDir\Setup.exe

    Filesize

    3.1MB

    MD5

    3596db7936f5d66cecbe028d13a91bfc

    SHA1

    fba98fb2e56e9d729c94a982c6f48eb5aba8930a

    SHA256

    56e476ecef007b432c2e388802c7541762dae164ceea1b5342b59b4857d2dfac

    SHA512

    e74596a17e9e9db088292e67e06800098d52b1da6d0870d1239144005632aaebb3b25e7b43d02c481f536b0bdd2a0483fffc5bd55e396c9241c3a7f161340e76

  • memory/2592-0-0x000007FEF5B13000-0x000007FEF5B14000-memory.dmp

    Filesize

    4KB

  • memory/2592-1-0x0000000000830000-0x0000000000B54000-memory.dmp

    Filesize

    3.1MB

  • memory/2592-2-0x000007FEF5B10000-0x000007FEF64FC000-memory.dmp

    Filesize

    9.9MB

  • memory/2592-9-0x000007FEF5B10000-0x000007FEF64FC000-memory.dmp

    Filesize

    9.9MB

  • memory/2948-11-0x000007FEF5B10000-0x000007FEF64FC000-memory.dmp

    Filesize

    9.9MB

  • memory/2948-10-0x0000000000BD0000-0x0000000000EF4000-memory.dmp

    Filesize

    3.1MB

  • memory/2948-12-0x000007FEF5B10000-0x000007FEF64FC000-memory.dmp

    Filesize

    9.9MB

  • memory/2948-13-0x000007FEF5B10000-0x000007FEF64FC000-memory.dmp

    Filesize

    9.9MB