Resubmissions

18/09/2026, 22:41

260918-2l67yaep8t10

18/09/2026, 22:40

260918-2lpb5atbld10

Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    18/09/2026, 22:40

General

  • Target
    Prestige Launcher (2).exe
  • Size 3.2MB
  • Sample260918-2lpb5atbld
  • SHA256 948e378ec01b0a9ccee144fe17290874d53eb9a686bae952643cfe30a0c3355b
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • quasar

Version
  • 1.4.1

Botnet
  • Office04

C2
  • 192.168.11.41:139

Mutex
  • aa4a2ba4-5541-49d5-938d-dcc66534489c

Attributes
  • encryption_key

    B0269B148C1775F4FBC2A4C271087C43E0AC4A02

  • install_name

    Client.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    RtkAudUService32

  • subdirectory

    tr-TN

Signatures

  • Family: Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Drops file in System32 directory 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 3 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 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\Prestige Launcher (2).exe
    "C:\Users\Admin\AppData\Local\Temp\Prestige Launcher (2).exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3148
    • C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "RtkAudUService32" /sc ONLOGON /tr "C:\Windows\system32\tr-TN\Client.exe" /rl HIGHEST /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:4480
    • C:\Windows\system32\tr-TN\Client.exe
      "C:\Windows\system32\tr-TN\Client.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:2916
      • C:\Windows\SYSTEM32\schtasks.exe
        "schtasks" /create /tn "RtkAudUService32" /sc ONLOGON /tr "C:\Windows\system32\tr-TN\Client.exe" /rl HIGHEST /f
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:4800
  • C:\Windows\system32\tr-TN\Client.exe
    C:\Windows\system32\tr-TN\Client.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4960
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:5728

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          Client.exe

          • Path C:\Windows\System32\tr-TN\Client.exe
          • Size 3.2MB
          • SHA256 948e378ec01b0a9ccee144fe17290874d53eb9a686bae952643cfe30a0c3355b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/2916-24-0x00007FFB3DDB0000-0x00007FFB3E754000-memory.dmp

          memory/2916-26-0x00007FFB3DDB0000-0x00007FFB3E754000-memory.dmp

          memory/2916-34-0x00007FFB3DDB0000-0x00007FFB3E754000-memory.dmp

          memory/2916-33-0x000000001CC50000-0x000000001CD02000-memory.dmp

          memory/2916-32-0x000000001B510000-0x000000001B560000-memory.dmp

          memory/2916-30-0x00007FFB3DDB0000-0x00007FFB3E754000-memory.dmp

          memory/2916-29-0x00007FFB3DDB0000-0x00007FFB3E754000-memory.dmp

          memory/2916-28-0x00007FFB3DDB0000-0x00007FFB3E754000-memory.dmp

          memory/2916-27-0x00007FFB3DDB0000-0x00007FFB3E754000-memory.dmp

          memory/2916-19-0x00007FFB3DDB0000-0x00007FFB3E754000-memory.dmp

          memory/2916-25-0x00007FFB3DDB0000-0x00007FFB3E754000-memory.dmp

          memory/2916-22-0x00007FFB3DDB0000-0x00007FFB3E754000-memory.dmp

          memory/2916-21-0x00007FFB3DDB0000-0x00007FFB3E754000-memory.dmp

          memory/2916-20-0x00007FFB3DDB0000-0x00007FFB3E754000-memory.dmp

          memory/2916-17-0x00007FFB3DDB0000-0x00007FFB3E754000-memory.dmp

          memory/2916-16-0x00007FFB3DDB0000-0x00007FFB3E754000-memory.dmp

          memory/2916-18-0x00007FFB3DDB0000-0x00007FFB3E754000-memory.dmp

          memory/3148-10-0x00007FFB3DDB0000-0x00007FFB3E754000-memory.dmp

          memory/3148-11-0x00007FFB3DDB0000-0x00007FFB3E754000-memory.dmp

          memory/3148-14-0x00007FFB3DDB0000-0x00007FFB3E754000-memory.dmp

          memory/3148-13-0x00007FFB3DDB0000-0x00007FFB3E754000-memory.dmp

          memory/3148-23-0x00007FFB3DDB0000-0x00007FFB3E754000-memory.dmp

          memory/3148-12-0x00007FFB3DDB0000-0x00007FFB3E754000-memory.dmp

          memory/3148-1-0x0000000000B30000-0x0000000000E60000-memory.dmp

          memory/3148-0-0x00007FFB3DF3F000-0x00007FFB3DF40000-memory.dmp

          memory/3148-9-0x00007FFB3DDB0000-0x00007FFB3E754000-memory.dmp

          memory/3148-2-0x00007FFB3DDB0000-0x00007FFB3E754000-memory.dmp

          memory/3148-8-0x00007FFB3DDB0000-0x00007FFB3E754000-memory.dmp

          memory/3148-7-0x00007FFB3DDB0000-0x00007FFB3E754000-memory.dmp

          memory/3148-6-0x00007FFB3DDB0000-0x00007FFB3E754000-memory.dmp

          memory/3148-5-0x00007FFB3DDB0000-0x00007FFB3E754000-memory.dmp

          memory/3148-4-0x00007FFB3DDB0000-0x00007FFB3E754000-memory.dmp

          memory/3148-3-0x00007FFB3DDB0000-0x00007FFB3E754000-memory.dmp