Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/11/2024, 15:51

General

  • Target
    ghew.exe
  • Size 3.1MB
  • Sample241114-talg4a1dnc
  • SHA256 74afe07e1c9db57aac77083c0ae3fe619897b17f5e3b4cbee0ef5a1ed96926a5
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • quasar

Version
  • 1.4.1

Botnet
  • Office04

C2
  • 4.tcp.us-cal-1.ngrok.io:15387

Mutex
  • 6d7137f1-888a-4306-b936-24b0c1cd3c6d

Attributes
  • encryption_key

    9C726C32E22321BF6CA2A3F704FAB2189268B504

  • install_name

    LogitechDRV.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    LogitechDRV

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs
  • Drops file in System32 directory 5 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\ghew.exe
    "C:\Users\Admin\AppData\Local\Temp\ghew.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:960
    • C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "LogitechDRV" /sc ONLOGON /tr "C:\Windows\system32\SubDir\LogitechDRV.exe" /rl HIGHEST /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:4388
    • C:\Windows\system32\SubDir\LogitechDRV.exe
      "C:\Windows\system32\SubDir\LogitechDRV.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3728
      • C:\Windows\SYSTEM32\schtasks.exe
        "schtasks" /create /tn "LogitechDRV" /sc ONLOGON /tr "C:\Windows\system32\SubDir\LogitechDRV.exe" /rl HIGHEST /f
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:1504

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        LogitechDRV.exe

        • Path C:\Windows\System32\SubDir\LogitechDRV.exe
        • Size 3.1MB
        • SHA256 74afe07e1c9db57aac77083c0ae3fe619897b17f5e3b4cbee0ef5a1ed96926a5
        • MD5 SHA1 SHA512 SSDEEP

        memory/960-0-0x00007FFB42CD3000-0x00007FFB42CD5000-memory.dmp

        memory/960-1-0x0000000000D20000-0x0000000001044000-memory.dmp

        memory/960-2-0x00007FFB42CD0000-0x00007FFB43791000-memory.dmp

        memory/960-9-0x00007FFB42CD0000-0x00007FFB43791000-memory.dmp

        memory/3728-10-0x00007FFB42CD0000-0x00007FFB43791000-memory.dmp

        memory/3728-11-0x00007FFB42CD0000-0x00007FFB43791000-memory.dmp

        memory/3728-12-0x000000001B4D0000-0x000000001B520000-memory.dmp

        memory/3728-13-0x000000001BD60000-0x000000001BE12000-memory.dmp

        memory/3728-14-0x00007FFB42CD0000-0x00007FFB43791000-memory.dmp