Analysis

  • max time kernel
    128s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    18-04-2024 10:42

General

  • Target

    ratXD.exe

  • Size

    3.1MB

  • MD5

    9c5f2f586e52a975593d11710685f846

  • SHA1

    887006a6849b22cfbf85871e50ab33404097f654

  • SHA256

    9259a4e7b71dc408f62faa9c6f7f73b5a906466dc9c751bfa8b23f641cc614f2

  • SHA512

    c3fb61664de1248713b7c1a98d17b344a68d6a676841f174659565e043ec6aecc0c27bd4a47d815e0d19fd070054ff2ca57fb304878b284162a5b9142c2b38bf

  • SSDEEP

    49152:avCI22SsaNYfdPBldt698dBcjHBY5VBxFUoGdD9THHB72eh2NT:avP22SsaNYfdPBldt6+dBcjHBY5c

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

177.72.82.9:5678

Mutex

62a700ff-4fdb-4af6-b871-ab8a290f0701

Attributes
  • encryption_key

    E0A41577673498A6E2FD27CB9AED2F6B83527072

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Extracted

Family

quasar

Attributes
  • reconnect_delay

    3000

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Drops file in System32 directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ratXD.exe
    "C:\Users\Admin\AppData\Local\Temp\ratXD.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2172
    • C:\Windows\system32\SubDir\Client.exe
      "C:\Windows\system32\SubDir\Client.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      PID:2080

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Windows\system32\SubDir\Client.exe

    Filesize

    2.8MB

    MD5

    04111705ab65d5bc16adf4eeab90011c

    SHA1

    97442c8671032c8e6bdf1bb086c4557efe40cb9e

    SHA256

    6705d825bcee1ee4f759c0d8908042516c5871a7dffa00d9adcba15f991e5162

    SHA512

    eddcab5dcc76831dc55438c2748d4caf2baba711b3042f7c9e27ff49015cd04bd805ff7f1f4c598b90de4ec2796eff2649dc949cdbe491bea40f3f0d8a1d6c1b

  • memory/2080-9-0x0000000001300000-0x0000000001624000-memory.dmp

    Filesize

    3.1MB

  • memory/2080-10-0x000000001B370000-0x000000001B3F0000-memory.dmp

    Filesize

    512KB

  • memory/2080-8-0x000007FEF5060000-0x000007FEF5A4C000-memory.dmp

    Filesize

    9.9MB

  • memory/2080-11-0x000007FEF5060000-0x000007FEF5A4C000-memory.dmp

    Filesize

    9.9MB

  • memory/2080-12-0x000000001B370000-0x000000001B3F0000-memory.dmp

    Filesize

    512KB

  • memory/2172-0-0x00000000012F0000-0x0000000001614000-memory.dmp

    Filesize

    3.1MB

  • memory/2172-1-0x000007FEF5060000-0x000007FEF5A4C000-memory.dmp

    Filesize

    9.9MB

  • memory/2172-2-0x000000001B4A0000-0x000000001B520000-memory.dmp

    Filesize

    512KB

  • memory/2172-7-0x000007FEF5060000-0x000007FEF5A4C000-memory.dmp

    Filesize

    9.9MB