QuasarRAT | Threat Level: medium | Type: RAT

Cryptographic Identifiers

SHA25691207d8496e842f9672570eea0b2a5779323a446450f8ccdbb8126e3c6cecdb1
MD5d3d36e0b1b99c9dfec9627cef07ae6c5
File Typeexe
Size3189.5 KB
First Seen2025-11-23
File NameClient.exe
Tagsexe, 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: 91207d8496e842f9672570eea0b2a5779323a446450f8ccdbb8126e3c6cecdb1
  • MD5: d3d36e0b1b99c9dfec9627cef07ae6c5

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: 91207d8496e842f9"
        threat_level = "medium"
        first_seen = "2025-11-23"
    condition:
        hash.sha256(0, filesize) == "91207d8496e842f9672570eea0b2a5779323a446450f8ccdbb8126e3c6cecdb1"
}

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 91207d8496e842f9672570eea0b2a5779323a446450f8ccdbb8126e3c6cecdb1 # MD5 d3d36e0b1b99c9dfec9627cef07ae6c5
TypeValueNote
sha256 91207d8496e842f9672570eea0b2a5779323a446450f8ccdbb8126e3c6cecdb1 Sample:QuasarRAT
md5 d3d36e0b1b99c9dfec9627cef07ae6c5 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