Overview

overview

10

Static

static

10

bJ11.exe

windows7-x64

10

bJ11.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    28s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    06/02/2023, 14:08

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General

  • Target

    bJ11.exe

  • Size

    348KB

  • MD5

    d001867ff938f296f1b03d98401833e4

  • SHA1

    a84e1ce678534dee8f48c3fe1433420b17d3ac64

  • SHA256

    5a741ef4cb97d9e31e89328404474eed99f685cf60bb63dcf86e7be4e4e9e269

  • SHA512

    e50dd6a939e82ecccb15ed1c27ac2685eee1ffbf664d2c9b59e8e6b60602fe4f49c487f05135c6849c4f9a3d9a316576b01d28c366733a00983f2a4a6ff627ee

  • SSDEEP

    6144:v46bPXhLApfpTCahJqLhQPcbWhhyBPVu0BXi2:AmhApvhJHnhiVu0BS2

Score
10/10
quasarxxxxxxxrcspywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

xxxxxxxRC

C2

qsar1928.duckdns.org:2158

Mutex

QSR_MUTEX_sigOedjQb38nZ7vJ3Q

Attributes
  • encryption_key

    hqEzPThiLx44k3QYmA1s

  • install_name

    Java.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Java

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

    trojanspywarequasar
  • 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.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistence
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bJ11.exe
    "C:\Users\Admin\AppData\Local\Temp\bJ11.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1364
    • C:\Windows\SysWOW64\schtasks.exe
      "schtasks" /create /tn "Java" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\bJ11.exe" /rl HIGHEST /f
      2⤵
      • Creates scheduled task(s)
      PID:924

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1364-54-0x00000000002B0000-0x000000000030E000-memory.dmp

    Filesize

    376KB

    Download

  • memory/1364-55-0x0000000074DE1000-0x0000000074DE3000-memory.dmp

    Filesize

    8KB

    Download