Analysis

  • max time kernel
    147s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-06-2024 22:52

General

  • Target

    Rat remove.exe

  • Size

    409KB

  • MD5

    4a9a21634ca5574ce01fa7bac0950d54

  • SHA1

    c29eb629cbe62c7828f16c5ad6b29ba015eb7b69

  • SHA256

    a003924092f4eed3281ccd3f82d95548a809a09436ee07b01b6d738a7c1f809d

  • SHA512

    e82f2df2f40cf8d51a85c2ee4e3fe78ff739b1581688b5107cbd8bec53a1d351ef3c16fdf4e709ad7f47afa55e5bcc4ed8de224e587f4dd873e0486b08e7325e

  • SSDEEP

    12288:YpiREGJFK6Fcbpdw5sI68ulIPPMQE1SQ:AwpJsb34ZPPsH

Malware Config

Extracted

Family

quasar

Version

3.1.5

Botnet

SeroXen

C2

147.185.221.20:47638

Mutex

$Sxr-GV6wZsGZZMeZ3qfenc

Attributes
  • encryption_key

    hwFlXMrCGoyqiQGmMvlX

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Windows Defender Anti-Malware Disable 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 2 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Rat remove.exe
    "C:\Users\Admin\AppData\Local\Temp\Rat remove.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4612
    • C:\Windows\SysWOW64\schtasks.exe
      "schtasks" /create /tn "Windows Defender Anti-Malware Disable Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\Rat remove.exe" /rl HIGHEST /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:4892

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/4612-0-0x000000007487E000-0x000000007487F000-memory.dmp

    Filesize

    4KB

  • memory/4612-1-0x0000000000650000-0x00000000006BC000-memory.dmp

    Filesize

    432KB

  • memory/4612-2-0x0000000005630000-0x0000000005BD4000-memory.dmp

    Filesize

    5.6MB

  • memory/4612-3-0x0000000005120000-0x00000000051B2000-memory.dmp

    Filesize

    584KB

  • memory/4612-4-0x0000000074870000-0x0000000075020000-memory.dmp

    Filesize

    7.7MB

  • memory/4612-5-0x00000000051C0000-0x0000000005226000-memory.dmp

    Filesize

    408KB

  • memory/4612-6-0x0000000005EE0000-0x0000000005EF2000-memory.dmp

    Filesize

    72KB

  • memory/4612-7-0x000000007487E000-0x000000007487F000-memory.dmp

    Filesize

    4KB

  • memory/4612-8-0x0000000074870000-0x0000000075020000-memory.dmp

    Filesize

    7.7MB

  • memory/4612-10-0x0000000006B00000-0x0000000006B0A000-memory.dmp

    Filesize

    40KB