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Analysis

  • max time kernel
    90s
  • max time network
    87s
  • platform
    windows11-21h2_x64
  • resource
    win11-20241007-en
  • resource tags

    arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    07/12/2024, 16:42

General

  • Target

    the newworking rat.exe

  • Size

    3.1MB

  • MD5

    00c08053c9ec8b1575cc1dc37454ef36

  • SHA1

    a41c5e4a0a07eaf751068543c0892451b06a17a1

  • SHA256

    b1949d403caba3fc8addc1779b003b18fd9744f075dc9002213aa4104cdbbac1

  • SHA512

    eaeefc1bdf1c4a1c98e0befced54a6dc83a1598f9d409bae6c0876447c832171e418a16b0be210d7223ee256a4f85946fdf4c4ddc7b3d6981c5ea23ef9d8998b

  • SSDEEP

    98304:Pvm42pda6D+/PjlLOlZyQipVJ9RJ6I5a:nyOpTV5a

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

thecoolfile

C2

dfsgmnhsrf23456623423456-51636.portmap.host:51636

Mutex

ba019940-beb5-4159-a5b2-ce0bc35ac066

Attributes
  • encryption_key

    B42CE86AEBA4D8818352F4D811EA7BBB472E229A

  • install_name

    windows defender.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    discord

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 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\the newworking rat.exe
    "C:\Users\Admin\AppData\Local\Temp\the newworking rat.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:648
    • C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "discord" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\windows defender.exe" /rl HIGHEST /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:1944
    • C:\Users\Admin\AppData\Roaming\SubDir\windows defender.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\windows defender.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3048
      • C:\Windows\SYSTEM32\schtasks.exe
        "schtasks" /create /tn "discord" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\windows defender.exe" /rl HIGHEST /f
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:3260
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /0
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:1876

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\SubDir\windows defender.exe

    Filesize

    3.1MB

    MD5

    00c08053c9ec8b1575cc1dc37454ef36

    SHA1

    a41c5e4a0a07eaf751068543c0892451b06a17a1

    SHA256

    b1949d403caba3fc8addc1779b003b18fd9744f075dc9002213aa4104cdbbac1

    SHA512

    eaeefc1bdf1c4a1c98e0befced54a6dc83a1598f9d409bae6c0876447c832171e418a16b0be210d7223ee256a4f85946fdf4c4ddc7b3d6981c5ea23ef9d8998b

  • memory/648-0-0x00007FFE79A53000-0x00007FFE79A55000-memory.dmp

    Filesize

    8KB

  • memory/648-1-0x0000000000A30000-0x0000000000D54000-memory.dmp

    Filesize

    3.1MB

  • memory/648-2-0x00007FFE79A50000-0x00007FFE7A512000-memory.dmp

    Filesize

    10.8MB

  • memory/648-9-0x00007FFE79A50000-0x00007FFE7A512000-memory.dmp

    Filesize

    10.8MB

  • memory/1876-26-0x000002741FB50000-0x000002741FB51000-memory.dmp

    Filesize

    4KB

  • memory/1876-25-0x000002741FB50000-0x000002741FB51000-memory.dmp

    Filesize

    4KB

  • memory/1876-22-0x000002741FB50000-0x000002741FB51000-memory.dmp

    Filesize

    4KB

  • memory/1876-21-0x000002741FB50000-0x000002741FB51000-memory.dmp

    Filesize

    4KB

  • memory/1876-23-0x000002741FB50000-0x000002741FB51000-memory.dmp

    Filesize

    4KB

  • memory/1876-15-0x000002741FB50000-0x000002741FB51000-memory.dmp

    Filesize

    4KB

  • memory/1876-17-0x000002741FB50000-0x000002741FB51000-memory.dmp

    Filesize

    4KB

  • memory/1876-16-0x000002741FB50000-0x000002741FB51000-memory.dmp

    Filesize

    4KB

  • memory/1876-24-0x000002741FB50000-0x000002741FB51000-memory.dmp

    Filesize

    4KB

  • memory/1876-27-0x000002741FB50000-0x000002741FB51000-memory.dmp

    Filesize

    4KB

  • memory/3048-14-0x00007FFE79A50000-0x00007FFE7A512000-memory.dmp

    Filesize

    10.8MB

  • memory/3048-10-0x00007FFE79A50000-0x00007FFE7A512000-memory.dmp

    Filesize

    10.8MB

  • memory/3048-11-0x00007FFE79A50000-0x00007FFE7A512000-memory.dmp

    Filesize

    10.8MB

  • memory/3048-13-0x000000001C5D0000-0x000000001C682000-memory.dmp

    Filesize

    712KB

  • memory/3048-12-0x000000001C4C0000-0x000000001C510000-memory.dmp

    Filesize

    320KB