Analysis

  • max time kernel
    96s
  • max time network
    132s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250129-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-02-2025 06:06

General

  • Target

    173864910300ba5ea72ec8f5a382f0e371374c0f6fc44a89ca98412290dd6f76f8b6303adb572.dat-decoded.exe

  • Size

    348KB

  • MD5

    f605752fad4e292cf6b1073e3ab590ee

  • SHA1

    66c8734f3a6db32d1ab5b1ba5c3fc097423314fa

  • SHA256

    8a54d056aeda3294b96434794bfc06246f4d88585773b0da3fdd1aebdae80da4

  • SHA512

    6bb83996ebf34ef5a8567822148960aaceaaf8e76ce7981e589d98d79d1533189ba750da7b2b5eda147f24b27f90da1c26411e3949b385831b9360635b2ba6f3

  • SSDEEP

    6144:4XNHXf500MYYSzKEQbcPKHeXMuvQK/ZzJzz7O:Gd504n1RvQKxtznO

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Server

C2

qjas.duckdns.org:55950

Mutex

QSR_MUTEX_jgz2oEahB8s3KyEOO6

Attributes
  • encryption_key

    gj45F7I9UftmOOGvZded

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Google Client Startup

  • subdirectory

    SubDir

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.

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\173864910300ba5ea72ec8f5a382f0e371374c0f6fc44a89ca98412290dd6f76f8b6303adb572.dat-decoded.exe
    "C:\Users\Admin\AppData\Local\Temp\173864910300ba5ea72ec8f5a382f0e371374c0f6fc44a89ca98412290dd6f76f8b6303adb572.dat-decoded.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    PID:2336

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2336-0-0x00000000752FE000-0x00000000752FF000-memory.dmp

    Filesize

    4KB

  • memory/2336-1-0x0000000000E90000-0x0000000000EEE000-memory.dmp

    Filesize

    376KB

  • memory/2336-2-0x0000000005E00000-0x00000000063A4000-memory.dmp

    Filesize

    5.6MB

  • memory/2336-3-0x0000000005900000-0x0000000005992000-memory.dmp

    Filesize

    584KB

  • memory/2336-4-0x00000000752F0000-0x0000000075AA0000-memory.dmp

    Filesize

    7.7MB

  • memory/2336-5-0x00000000059A0000-0x0000000005A06000-memory.dmp

    Filesize

    408KB

  • memory/2336-6-0x0000000006610000-0x0000000006622000-memory.dmp

    Filesize

    72KB

  • memory/2336-7-0x0000000006B50000-0x0000000006B8C000-memory.dmp

    Filesize

    240KB

  • memory/2336-9-0x0000000006EC0000-0x0000000006ECA000-memory.dmp

    Filesize

    40KB

  • memory/2336-10-0x00000000752FE000-0x00000000752FF000-memory.dmp

    Filesize

    4KB

  • memory/2336-11-0x00000000752F0000-0x0000000075AA0000-memory.dmp

    Filesize

    7.7MB