Analysis

  • max time kernel
    95s
  • max time network
    134s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15-11-2024 18:38

General

  • Target

    5c76b09c0f287820cc34b5f06a8fd627bface66474241daa4b5d86273cf3102d.exe

  • Size

    347KB

  • MD5

    cef03024e5b35b5197c1337596109958

  • SHA1

    6ca77f693ccc8c283c4de40fb94b62b06538437d

  • SHA256

    5c76b09c0f287820cc34b5f06a8fd627bface66474241daa4b5d86273cf3102d

  • SHA512

    b683f194c7fd437596a263327e147c98f94e3898d20fcbf9a36dafbc7817ba77ad562c6fe6400f3c49756257cf1ee6518c6443ae2eef30b9cd0665b6b45286e9

  • SSDEEP

    6144:mOL+PQIshf+PME+WoWmbeAR4gt4wG3eCoDs:FisPEfF0ft4wG3eZDs

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

drss

C2

crissnda5.ddns.net:2024

Mutex

QSR_MUTEX_6VCXMuKq5sglsUPNYu

Attributes
  • encryption_key

    UiCvCUXD3LuQR6fFckYE

  • install_name

    Update service.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    service update

  • subdirectory

    microsofte

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • 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

Processes

  • C:\Users\Admin\AppData\Local\Temp\5c76b09c0f287820cc34b5f06a8fd627bface66474241daa4b5d86273cf3102d.exe
    "C:\Users\Admin\AppData\Local\Temp\5c76b09c0f287820cc34b5f06a8fd627bface66474241daa4b5d86273cf3102d.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4380

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/4380-0-0x00007FFCBBE73000-0x00007FFCBBE75000-memory.dmp

    Filesize

    8KB

  • memory/4380-1-0x0000000000B00000-0x0000000000B5E000-memory.dmp

    Filesize

    376KB

  • memory/4380-2-0x00007FFCBBE70000-0x00007FFCBC931000-memory.dmp

    Filesize

    10.8MB

  • memory/4380-3-0x0000000002E50000-0x0000000002E62000-memory.dmp

    Filesize

    72KB

  • memory/4380-4-0x000000001B7D0000-0x000000001B80C000-memory.dmp

    Filesize

    240KB

  • memory/4380-5-0x00007FFCBBE73000-0x00007FFCBBE75000-memory.dmp

    Filesize

    8KB

  • memory/4380-6-0x00007FFCBBE70000-0x00007FFCBC931000-memory.dmp

    Filesize

    10.8MB