Analysis

  • max time kernel
    38s
  • max time network
    42s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240412-en
  • resource tags

    arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    21-04-2024 01:06

General

  • Target

    Gtag_spoofer-main/Gtagspoofer_1.4.7.exe

  • Size

    3.1MB

  • MD5

    5110076773db1352ac91ef673fef465f

  • SHA1

    415ee6c130d71942a7197642d1a4ae7efb637ea8

  • SHA256

    8575df8567eb8fbb7b07954de694590e07757edf2bfcf3b623b1df9790ce698d

  • SHA512

    a9c081c768e3c72c8a8bfda715575e50a2a087e4dc1ec4e104bc761549af3c2fb5a3e9097c03bacec4940e6d7de65aa5a75dfc17ed784d4453f9de69e7ff2877

  • SSDEEP

    49152:rvyI22SsaNYfdPBldt698dBcjHS8x6EMk2k/JKPoGdDTHHB72eh2NT:rvf22SsaNYfdPBldt6+dBcjHS8xxi

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

192.168.0.53:4782

Mutex

e1883fb9-6361-4406-b1f7-f82f80cbbe14

Attributes
  • encryption_key

    863766762E363E1F1B41973F98B5594794BAAEC6

  • install_name

    Client.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 payload 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Creates scheduled task(s) 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\Gtag_spoofer-main\Gtagspoofer_1.4.7.exe
    "C:\Users\Admin\AppData\Local\Temp\Gtag_spoofer-main\Gtagspoofer_1.4.7.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3880
    • C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
      2⤵
      • Creates scheduled task(s)
      PID:3972
    • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2000
      • C:\Windows\SYSTEM32\schtasks.exe
        "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
        3⤵
        • Creates scheduled task(s)
        PID:2608

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    3.1MB

    MD5

    5110076773db1352ac91ef673fef465f

    SHA1

    415ee6c130d71942a7197642d1a4ae7efb637ea8

    SHA256

    8575df8567eb8fbb7b07954de694590e07757edf2bfcf3b623b1df9790ce698d

    SHA512

    a9c081c768e3c72c8a8bfda715575e50a2a087e4dc1ec4e104bc761549af3c2fb5a3e9097c03bacec4940e6d7de65aa5a75dfc17ed784d4453f9de69e7ff2877

  • memory/2000-10-0x00007FFE2DAC0000-0x00007FFE2E582000-memory.dmp

    Filesize

    10.8MB

  • memory/2000-11-0x00000000016E0000-0x00000000016F0000-memory.dmp

    Filesize

    64KB

  • memory/2000-12-0x000000001C7C0000-0x000000001C810000-memory.dmp

    Filesize

    320KB

  • memory/2000-13-0x000000001C8D0000-0x000000001C982000-memory.dmp

    Filesize

    712KB

  • memory/2000-14-0x00007FFE2DAC0000-0x00007FFE2E582000-memory.dmp

    Filesize

    10.8MB

  • memory/2000-15-0x00000000016E0000-0x00000000016F0000-memory.dmp

    Filesize

    64KB

  • memory/2000-16-0x000000001D210000-0x000000001D738000-memory.dmp

    Filesize

    5.2MB

  • memory/3880-0-0x0000000000EF0000-0x0000000001214000-memory.dmp

    Filesize

    3.1MB

  • memory/3880-1-0x00007FFE2DAC0000-0x00007FFE2E582000-memory.dmp

    Filesize

    10.8MB

  • memory/3880-2-0x000000001C150000-0x000000001C160000-memory.dmp

    Filesize

    64KB

  • memory/3880-9-0x00007FFE2DAC0000-0x00007FFE2E582000-memory.dmp

    Filesize

    10.8MB