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Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20230712-en
  • resource tags

    arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
  • submitted
    18/07/2023, 16:49

General

  • Target

    36c483343398ea17347a4be4360ad4fb5f693b71cb61a5ecd919058a42884a06.exe

  • Size

    348KB

  • MD5

    3d05c749ca0294f33e408903aa27641c

  • SHA1

    9205b95e8de89f2bb4416dc901b2ffbe7aad7d0f

  • SHA256

    36c483343398ea17347a4be4360ad4fb5f693b71cb61a5ecd919058a42884a06

  • SHA512

    f4af75c71de4d66c75af8771e5610e7052ca853ede13906b21cb28285636ba1bbbdffd74a6b03877fbb4250785456794d0bf0fa0641945bc45dc60fa7fabf0b6

  • SSDEEP

    6144:52NHXf500MKlzsecP8hxQwbkm/+7E4M4LMtfwKqe:4d50KzmPZ6S7MkVKqe

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Build_9600

C2

rick63.publicvm.com:6750

Mutex

QSR_MUTEX_yvr8DKPNa7TF7IQF9u

Attributes
  • encryption_key

    bJrf80Bjil5CGqVPHqhE

  • 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\36c483343398ea17347a4be4360ad4fb5f693b71cb61a5ecd919058a42884a06.exe
    "C:\Users\Admin\AppData\Local\Temp\36c483343398ea17347a4be4360ad4fb5f693b71cb61a5ecd919058a42884a06.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    PID:2676

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2676-54-0x0000000001060000-0x00000000010BE000-memory.dmp

    Filesize

    376KB

  • memory/2676-55-0x0000000073CE0000-0x00000000743CE000-memory.dmp

    Filesize

    6.9MB

  • memory/2676-56-0x0000000004BD0000-0x0000000004C10000-memory.dmp

    Filesize

    256KB

  • memory/2676-58-0x0000000073CE0000-0x00000000743CE000-memory.dmp

    Filesize

    6.9MB

  • memory/2676-59-0x0000000004BD0000-0x0000000004C10000-memory.dmp

    Filesize

    256KB