Analysis

  • max time kernel
    90s
  • max time network
    94s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240611-en
  • resource tags

    arch:x64arch:x86image:win11-20240611-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    29-06-2024 19:13

General

  • Target

    TestforKio.exe

  • Size

    3.1MB

  • MD5

    47058cd2874396c053c1b9d90b987b99

  • SHA1

    9bbfa6ee0adfc5df280740906df97b4f45b611fa

  • SHA256

    e775b42335e7764a5bf9e695f68272c68fc68de16d20bd3b11af95632edcfc5b

  • SHA512

    cc3e5bfa9453880d34d33fa448fd06c2cf50608ad9dbfef59d7cbf46f76bdebc739973155fc3e365a008cd40022a1c1587b04342a95e38203625a24709ac545a

  • SSDEEP

    49152:fvnI22SsaNYfdPBldt698dBcjHNxDE/Ayk/JxvoGdJTHHB72eh2NT:fvI22SsaNYfdPBldt6+dBcjHNxzV

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

zzzz

C2

8.tcp.ngrok.io:18001

Mutex

116e2822-047d-4b5c-ad10-563148a1a28e

Attributes
  • encryption_key

    C366BC97216329D1909524412E3ECB1EBC575D07

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 1 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\TestforKio.exe
    "C:\Users\Admin\AppData\Local\Temp\TestforKio.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2888
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\9RmSfPkLQZwh.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:456
      • C:\Windows\system32\chcp.com
        chcp 65001
        3⤵
          PID:4748
        • C:\Windows\system32\PING.EXE
          ping -n 10 localhost
          3⤵
          • Runs ping.exe
          PID:2400

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\9RmSfPkLQZwh.bat

      Filesize

      211B

      MD5

      24321d9b49b2ec4fd081311d089e7bbf

      SHA1

      7dddb53cde368c35da47a261e28ffd91b4886954

      SHA256

      ece59d3f00b238ef13f359f16c874f0c6b5acaf3d3b3b26f364a77c08ad0befc

      SHA512

      981f810080f8bbd7f5450b6a1960e58572935e53222a1603f8f56e56350a78f04d557cdad86658042868133590bf1fee2a62e3688a0e74006198b4d9f5c57d44

    • memory/2888-0-0x00007FFB5DF03000-0x00007FFB5DF05000-memory.dmp

      Filesize

      8KB

    • memory/2888-1-0x0000000000350000-0x0000000000674000-memory.dmp

      Filesize

      3.1MB

    • memory/2888-2-0x00007FFB5DF00000-0x00007FFB5E9C2000-memory.dmp

      Filesize

      10.8MB

    • memory/2888-3-0x000000001BBA0000-0x000000001BBF0000-memory.dmp

      Filesize

      320KB

    • memory/2888-4-0x000000001BCB0000-0x000000001BD62000-memory.dmp

      Filesize

      712KB

    • memory/2888-7-0x000000001BC20000-0x000000001BC32000-memory.dmp

      Filesize

      72KB

    • memory/2888-8-0x000000001C6C0000-0x000000001C6FC000-memory.dmp

      Filesize

      240KB

    • memory/2888-9-0x00007FFB5DF03000-0x00007FFB5DF05000-memory.dmp

      Filesize

      8KB

    • memory/2888-10-0x00007FFB5DF00000-0x00007FFB5E9C2000-memory.dmp

      Filesize

      10.8MB

    • memory/2888-16-0x00007FFB5DF00000-0x00007FFB5E9C2000-memory.dmp

      Filesize

      10.8MB