Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    08/08/2026, 17:32

General

  • Target
    ntmyebewekca.exe
  • Size 3.1MB
  • Sample260808-v4k9vsv1cs
  • SHA256 bc033453ae6a4965aac275ec154517bb55c428149ef4107951246ecf17e48674
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • quasar

Version
  • 8.8.8.8:5347;

Botnet
  • ZZZ

C2
  • https://pastebin.com/raw/3Gsg7PXu

Mutex
  • cf45c407-5147-4b39-9110-15906cc0569f

Attributes
  • encryption_key

    E0222642503FFF7C210982AA1382402C0824E92C

  • install_name

    AggregatorHost.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    1583

  • startup_key

    Microsoft Aggregator Host

  • subdirectory

    MPC-AH

Signatures

  • Family: Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs

    Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

  • 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 3 IoCs
  • Suspicious use of WriteProcessMemory 3 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\ntmyebewekca.exe
    "C:\Users\Admin\AppData\Local\Temp\ntmyebewekca.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3412
    • C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "Microsoft Aggregator Host" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\MPC-AH\AggregatorHost.exe" /rl HIGHEST /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:368
    • C:\Users\Admin\AppData\Roaming\MPC-AH\AggregatorHost.exe
      "C:\Users\Admin\AppData\Roaming\MPC-AH\AggregatorHost.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2544
      • C:\Windows\SYSTEM32\schtasks.exe
        "schtasks" /create /tn "Microsoft Aggregator Host" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\MPC-AH\AggregatorHost.exe" /rl HIGHEST /f
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:1512
  • C:\Users\Admin\AppData\Roaming\MPC-AH\AggregatorHost.exe
    C:\Users\Admin\AppData\Roaming\MPC-AH\AggregatorHost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4444

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        AggregatorHost.exe

        • Path C:\Users\Admin\AppData\Roaming\MPC-AH\AggregatorHost.exe
        • Size 3.1MB
        • SHA256 bc033453ae6a4965aac275ec154517bb55c428149ef4107951246ecf17e48674
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2544-26-0x00007FFC45BF0000-0x00007FFC46594000-memory.dmp

        memory/2544-24-0x00007FFC45BF0000-0x00007FFC46594000-memory.dmp

        memory/2544-32-0x000000001B8E0000-0x000000001B992000-memory.dmp

        memory/2544-29-0x00007FFC45BF0000-0x00007FFC46594000-memory.dmp

        memory/2544-28-0x00007FFC45BF0000-0x00007FFC46594000-memory.dmp

        memory/2544-27-0x00007FFC45BF0000-0x00007FFC46594000-memory.dmp

        memory/2544-19-0x00007FFC45BF0000-0x00007FFC46594000-memory.dmp

        memory/2544-18-0x00007FFC45BF0000-0x00007FFC46594000-memory.dmp

        memory/2544-31-0x0000000002BE0000-0x0000000002C30000-memory.dmp

        memory/2544-23-0x00007FFC45BF0000-0x00007FFC46594000-memory.dmp

        memory/2544-25-0x00007FFC45BF0000-0x00007FFC46594000-memory.dmp

        memory/2544-22-0x00007FFC45BF0000-0x00007FFC46594000-memory.dmp

        memory/2544-21-0x00007FFC45BF0000-0x00007FFC46594000-memory.dmp

        memory/2544-33-0x00007FFC45BF0000-0x00007FFC46594000-memory.dmp

        memory/2544-15-0x00007FFC45BF0000-0x00007FFC46594000-memory.dmp

        memory/2544-20-0x00007FFC45BF0000-0x00007FFC46594000-memory.dmp

        memory/2544-17-0x00007FFC45BF0000-0x00007FFC46594000-memory.dmp

        memory/3412-8-0x00007FFC45BF0000-0x00007FFC46594000-memory.dmp

        memory/3412-16-0x00007FFC45BF0000-0x00007FFC46594000-memory.dmp

        memory/3412-13-0x00007FFC45BF0000-0x00007FFC46594000-memory.dmp

        memory/3412-12-0x00007FFC45BF0000-0x00007FFC46594000-memory.dmp

        memory/3412-11-0x00007FFC45BF0000-0x00007FFC46594000-memory.dmp

        memory/3412-10-0x00007FFC45BF0000-0x00007FFC46594000-memory.dmp

        memory/3412-9-0x00007FFC45BF0000-0x00007FFC46594000-memory.dmp

        memory/3412-1-0x0000000000BE0000-0x0000000000F04000-memory.dmp

        memory/3412-7-0x00007FFC45BF0000-0x00007FFC46594000-memory.dmp

        memory/3412-6-0x00007FFC45BF0000-0x00007FFC46594000-memory.dmp

        memory/3412-5-0x00007FFC45BF0000-0x00007FFC46594000-memory.dmp

        memory/3412-4-0x00007FFC45BF0000-0x00007FFC46594000-memory.dmp

        memory/3412-3-0x00007FFC45BF0000-0x00007FFC46594000-memory.dmp

        memory/3412-2-0x00007FFC45BF0000-0x00007FFC46594000-memory.dmp

        memory/3412-0-0x00007FFC45D7F000-0x00007FFC45D80000-memory.dmp