Akira | Threat Level: high | Type: Ransomware

Cryptographic Identifiers

SHA25651f81938d16384ea7c86f92515bc4a1714791b628e008b61ff974d684a63603f
MD56c5e38cfaacff00e250dc2ab9565b6dd
File Typeexe
Size1051.5 KB
First Seen2025-05-31
File Name51f81938d16384ea7c86f92515bc4a1714791b628e008b61ff974d684a63603f
Tagsakira, exe, Ransomware

Malware Family: Akira

Akira, Cisco VPN açıklarını hedefler.

TypeRansomware
Programming LanguageC++
Target PlatformWindows/Linux
C2 Protocol
PurposeCisco VPN ransomware
First Seen Year2023

Threat Indicators (IOC)

  • SHA256: 51f81938d16384ea7c86f92515bc4a1714791b628e008b61ff974d684a63603f
  • MD5: 6c5e38cfaacff00e250dc2ab9565b6dd

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

System Cleanup Guide

  1. Sistemi ağdan DERHAL ayırın — diğer cihazlara yayılmayı durdurun
  2. Do not pay the ransom — there is no guarantee your files will be restored
  3. Quarantine the affected drives
  4. Kullanılan fidye yazılımı ailesini belirleyin (nomoreransom.org)
  5. Try available decryptor tools (the NoMoreRansom project)
  6. Report the incident to the authorities (cybercrime unit)
  7. Temiz bir yedekten kurtarın; yedeğiniz yoksa sürücüyü saklayın

YARA Rule Hints

rule Akira_SHA256 {
    meta:
        description = "Akira sample: 51f81938d16384ea"
        threat_level = "high"
        first_seen = "2025-05-31"
    condition:
        hash.sha256(0, filesize) == "51f81938d16384ea7c86f92515bc4a1714791b628e008b61ff974d684a63603f"
}

Akira — Malware Profile

Akira ransomware RaaS. akiralkzxzq Tor sizdirma sitesi. .akira uzantisi. akira_readme.txt fidye notu. SleepEx anti-debug.

Malware Type
Ransomware
Programming Language
C++
C2 Protocol
Target Systems
Windows/Linux

Technical Details

Ransomware ailesi: AES/RSA hibrid sifreleme, dosya uzantisi degistirme, shadow copy silme, C2 ile anahtar alis-verisi, fidye notu birakma, kullanici belgelerine odaklanma

Capabilities & Behavior

Dosya Şifreleme (AES/RSA)
Gölge Kopya Silme
Yedek Kaldırma
Fidye Notu Oluşturma
Kalıcılık Sağlama
Ağ Paylaşımı Şifreleme
Anti-Analiz Teknikleri
Çift Gasp (Data Leak)

IOC List (2 indicators)

IOC — Akira
# SHA256 51f81938d16384ea7c86f92515bc4a1714791b628e008b61ff974d684a63603f # MD5 6c5e38cfaacff00e250dc2ab9565b6dd
TypeValueNote
sha256 51f81938d16384ea7c86f92515bc4a1714791b628e008b61ff974d684a63603f Sample:Akira
md5 6c5e38cfaacff00e250dc2ab9565b6dd Sample:Akira
Tags
akiraransomwaremalwarehighsha256hash-analizi