Analysis

  • max time kernel
    145s
  • max time network
    149s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240611-en
  • resource tags

    arch:x64arch:x86image:win11-20240611-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    30/06/2024, 19:33

General

  • Target
    Uni.exe
  • Size 348KB
  • Sample240630-x9ny2stbpg
  • SHA256 45213c63aaaf31c6b3a20b632e6b6f0efcc5ca693528bff63d02752f48f17590
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • quasar

Version
  • 15.5.0

Botnet
  • Crypted

C2
  • 147.185.221.20:49485

Mutex
  • QSR_MUTEX_k8eftMEuU7a4TIUS2H

Attributes
  • encryption_key

    7VNoqFBD2kgjE7AIWeFj

  • 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
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Uni.exe
    "C:\Users\Admin\AppData\Local\Temp\Uni.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    PID:3740

Network

        MITRE ATT&CK Matrix

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/3740-0-0x00000000746FE000-0x00000000746FF000-memory.dmp

        memory/3740-1-0x0000000000390000-0x00000000003EE000-memory.dmp

        memory/3740-2-0x00000000054F0000-0x0000000005A96000-memory.dmp

        memory/3740-3-0x0000000004F40000-0x0000000004FD2000-memory.dmp

        memory/3740-4-0x00000000746F0000-0x0000000074EA1000-memory.dmp

        memory/3740-5-0x0000000004FE0000-0x0000000005046000-memory.dmp

        memory/3740-6-0x00000000054D0000-0x00000000054E2000-memory.dmp

        memory/3740-7-0x0000000006210000-0x000000000624C000-memory.dmp

        memory/3740-9-0x00000000065A0000-0x00000000065AA000-memory.dmp

        memory/3740-10-0x00000000746FE000-0x00000000746FF000-memory.dmp

        memory/3740-11-0x00000000746F0000-0x0000000074EA1000-memory.dmp