Remcos | Threat Level: high | Type: RAT

Cryptographic Identifiers

SHA2561ba5cd4efe4e3ea5751e2ae04bb37c4858bc286f1a3adf2d5c76b44348a14708
MD54ce519251ceff1dc3719e22d8ba51faf
File Typeexe
Size96.0 KB
First Seen2026-05-27
File NameBackdoor.exe
Tagsc2, exe, RAT, remcos, RemcosRAT, Remote

Malware Family: Remcos

Remcos, kötüye kullanılan RAT'tır.

TypeRAT
Programming LanguageC++
Target PlatformWindows
C2 ProtocolTCP/SSL
PurposeUzaktan izleme, tuş kaydı
First Seen Year2016
AliasesRemcosRAT

Threat Indicators (IOC)

  • SHA256: 1ba5cd4efe4e3ea5751e2ae04bb37c4858bc286f1a3adf2d5c76b44348a14708
  • MD5: 4ce519251ceff1dc3719e22d8ba51faf

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 Remcos_SHA256 {
    meta:
        description = "Remcos sample: 1ba5cd4efe4e3ea5"
        threat_level = "high"
        first_seen = "2026-05-27"
    condition:
        hash.sha256(0, filesize) == "1ba5cd4efe4e3ea5751e2ae04bb37c4858bc286f1a3adf2d5c76b44348a14708"
}

Remcos — Malware Profile

RemcosRAT. SCAN DOC LOI.r00 multipart RAR. French LOI law lure. Five c2 substrings. Breaking-Security developer.

Malware Type
RAT
Programming Language
C++
C2 Protocol
TCP/SSL
Target Systems
Windows
Also Known As (AKA)
RemcosRAT

Capabilities & Behavior

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

IOC List (2 indicators)

IOC — Remcos
# SHA256 1ba5cd4efe4e3ea5751e2ae04bb37c4858bc286f1a3adf2d5c76b44348a14708 # MD5 4ce519251ceff1dc3719e22d8ba51faf
TypeValueNote
sha256 1ba5cd4efe4e3ea5751e2ae04bb37c4858bc286f1a3adf2d5c76b44348a14708 Sample:Remcos
md5 4ce519251ceff1dc3719e22d8ba51faf Sample:Remcos

C2 Servers (3 recorded servers for this family)

Address Type Port Protocol Status Country
BreakingSecurity.net domain — HTTP active —
pro.ip-api.com domain — HTTP active —
UNKNOWN_HOST unknown 20343 TCP inactive —

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

Tags
remcosratmalwarehighsha256hash-analizi