Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    12/09/2026, 14:25

General

  • Target
    CBD6A180FBA88121622F18261D3292FC.exe
  • Size 3.1MB
  • Sample260912-rrkwsadb68
  • SHA256 da1d478a5b6b481e7c66699f8d8f0d21fc7ebbe854401c6ae67eacae6ea5a7a5
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • quasar

Version
  • 1.4.1

Botnet
  • LZM客户

C2
  • 47.116.211.21:4782

Mutex
  • 8523ab70-895a-4819-9c09-e5c93bb8bfdc

Attributes
  • encryption_key

    8CFFE4FA8F624CB4C15790C414E04ACDE61E3651

  • install_name

    LZM.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    LZMSup

  • subdirectory

    SubDir

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 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 3 IoCs
  • Suspicious use of SetWindowsHookEx 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\CBD6A180FBA88121622F18261D3292FC.exe
    "C:\Users\Admin\AppData\Local\Temp\CBD6A180FBA88121622F18261D3292FC.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4748
    • C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "LZMSup" /sc ONLOGON /tr "C:\Windows\system32\SubDir\LZM.exe" /rl HIGHEST /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:5808
    • C:\Windows\system32\SubDir\LZM.exe
      "C:\Windows\system32\SubDir\LZM.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5976
      • C:\Windows\SYSTEM32\schtasks.exe
        "schtasks" /create /tn "LZMSup" /sc ONLOGON /tr "C:\Windows\system32\SubDir\LZM.exe" /rl HIGHEST /f
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:3616
  • C:\Windows\system32\SubDir\LZM.exe
    C:\Windows\system32\SubDir\LZM.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4528

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        LZM.exe

        • Path C:\Windows\System32\SubDir\LZM.exe
        • Size 3.1MB
        • SHA256 da1d478a5b6b481e7c66699f8d8f0d21fc7ebbe854401c6ae67eacae6ea5a7a5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/4748-0-0x0000000000580000-0x00000000008A4000-memory.dmp

        memory/4748-1-0x00000000010D0000-0x00000000010E0000-memory.dmp

        memory/5976-8-0x0000000002C40000-0x0000000002C50000-memory.dmp

        memory/5976-10-0x000000001C640000-0x000000001C690000-memory.dmp

        memory/5976-12-0x000000001C750000-0x000000001C802000-memory.dmp

        memory/5976-13-0x0000000002C40000-0x0000000002C50000-memory.dmp