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Analysis

  • max time kernel
    118s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    14/02/2024, 15:59

General

  • Target

    Microsoft Gaming Helper.exe

  • Size

    3.1MB

  • MD5

    1f4df8c89189221420cd89ea0bdcf753

  • SHA1

    30d7c89bd5d28870a5f6c25749ef2bb7b797de72

  • SHA256

    b3573e1e395f30ce38648d8c9d5714ad35b0bcb93dbeabb1954e14b0199ca4d7

  • SHA512

    4c7a66f7b5dff06328f6e737994e29dbec32931d9974c560d0867f67aef3a0c4f3a475f68d5299039bcde8528312611af18a654be34e6378a37d24e659be8ee1

  • SSDEEP

    49152:3vbI22SsaNYfdPBldt698dBcjHwJRJ6/bR3LoGdJQ1THHB72eh2NT:3vk22SsaNYfdPBldt6+dBcjHwJRJ6RW

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Enayi

C2

192.168.0.7:4782

Mutex

cfb088c2-8243-4e30-af47-82a5b5bebf06

Attributes
  • encryption_key

    7AD862AAD94BE9C6EAA16CA4328915D7905AA3B4

  • 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
  • Creates scheduled task(s) 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 WriteProcessMemory 3 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\Microsoft Gaming Helper.exe
    "C:\Users\Admin\AppData\Local\Temp\Microsoft Gaming Helper.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2272
    • C:\Windows\system32\schtasks.exe
      "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
      2⤵
      • Creates scheduled task(s)
      PID:2760

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/2272-0-0x0000000000910000-0x0000000000C34000-memory.dmp

    Filesize

    3.1MB

  • memory/2272-1-0x000007FEF5880000-0x000007FEF626C000-memory.dmp

    Filesize

    9.9MB

  • memory/2272-2-0x000000001B370000-0x000000001B3F0000-memory.dmp

    Filesize

    512KB

  • memory/2272-4-0x000007FEF5880000-0x000007FEF626C000-memory.dmp

    Filesize

    9.9MB

  • memory/2272-5-0x000000001B370000-0x000000001B3F0000-memory.dmp

    Filesize

    512KB