QuasarRAT | Threat Level: medium | Type: RAT

Cryptographic Identifiers

SHA25641e3790715f3aa50b6bd7e8f63ec0322a84c7cc650c761739a2c2246c51e3f73
MD53fde99e14005fcf2380d6748ce2aa549
File Typeexe
Size3190.0 KB
First Seen2025-12-16
File NameClient-built.exe
Tagsbotnet, c2, exe, QuasarRAT

Malware Family: QuasarRAT

QuasarRAT, açık kaynaklı araçtır.

TypeRAT
Programming LanguageC#/.NET
Target PlatformWindows
C2 ProtocolTCP/SSL
PurposeUzaktan masaüstü
First Seen Year2014
AliasesxRAT

Threat Indicators (IOC)

  • SHA256: 41e3790715f3aa50b6bd7e8f63ec0322a84c7cc650c761739a2c2246c51e3f73
  • MD5: 3fde99e14005fcf2380d6748ce2aa549

You can verify all hash values of this sample on VirusTotal.

System Cleanup Guide

  1. Disconnect the system from the network — unplug ethernet, disable Wi-Fi
  2. Terminate suspicious processes from Task Manager
  3. Run a full system scan with Malwarebytes or Kaspersky
  4. HKCU\Software\Microsoft\Windows\CurrentVersion\Run kayıtlarını kontrol edin
  5. Review newly created tasks in Task Scheduler
  6. Change all your account passwords from a clean device
  7. Gerekirse Windows'u yeniden yükleyin ve verilerinizi temiz bir yedeğe geri alın

YARA Rule Hints

rule QuasarRAT_SHA256 {
    meta:
        description = "QuasarRAT sample: 41e3790715f3aa50"
        threat_level = "medium"
        first_seen = "2025-12-16"
    condition:
        hash.sha256(0, filesize) == "41e3790715f3aa50b6bd7e8f63ec0322a84c7cc650c761739a2c2246c51e3f73"
}

QuasarRAT — Malware Profile

QuasarRAT acik kaynak uzaktan erisim araci. v1.4.0 istemcisi Quasar.Client.Recovery ile Chrome/Firefox/Edge/Yandex/WinSCP/FileZilla kimlik bilgilerini kurtarir. PGma.System.MouseKeyHook ile fare+klavye izlemesi yapar. Protobuf-net ile sifreli C2 iletisimi saglar. schtasks ile kalicilik.

Malware Type
RAT
Programming Language
C#/.NET
C2 Protocol
TCP/SSL
Target Systems
Windows
Also Known As (AKA)
xRAT

Technical Details

C# .NET, TLS/SSL sifreleme, TCP varsayilan port 4782, Remote Desktop, Process Manager, File Browser, Password Recovery, Reverse Proxy (SOCKS5), Keylogger, Registry Editor

Capabilities & Behavior

Uzaktan Erişim & Kontrol
Keylogger
Ekran Görüntüsü
Webcam Erişimi
Dosya Yönetimi
Süreç Yönetimi
Komut Yürütme
Kalıcılık Mekanizması

IOC List (2 indicators)

IOC — QuasarRAT
# SHA256 41e3790715f3aa50b6bd7e8f63ec0322a84c7cc650c761739a2c2246c51e3f73 # MD5 3fde99e14005fcf2380d6748ce2aa549
TypeValueNote
sha256 41e3790715f3aa50b6bd7e8f63ec0322a84c7cc650c761739a2c2246c51e3f73 Sample:QuasarRAT
md5 3fde99e14005fcf2380d6748ce2aa549 Sample:QuasarRAT

C2 Servers (5 recorded servers for this family)

Address Type Port Protocol Status Country
api.ipify.org domain 443 HTTPS active —
ipwho.is domain 443 HTTPS active —
hitclub.paris domain — HTTP active —
77.91.124.165 ip 4782 TCP inactive —
192.210.179.210 ip 4782 TCP inactive US

C2 addresses are provided only from malware samples manually verified by the KEYDAL team. Commercial use is prohibited.

Tags
quasarratratmalwaremediumsha256hash-analizi