Akira | Threat Level: high | Type: Ransomware

Cryptographic Identifiers

SHA256efbb8a4b6d879fb0d28f6b480436010fe91ab2b4ecf416640ef54650c2fdfc60
MD595bd29a0321f88b1d52a083f505210ab
File Typeexe
Size14322.4 KB
First Seen2025-05-31
File Nameefbb8a4b6d879fb0d28f6b480436010fe91ab2b4ecf416640ef54650c2fdfc60
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: efbb8a4b6d879fb0d28f6b480436010fe91ab2b4ecf416640ef54650c2fdfc60
  • MD5: 95bd29a0321f88b1d52a083f505210ab

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: efbb8a4b6d879fb0"
        threat_level = "high"
        first_seen = "2025-05-31"
    condition:
        hash.sha256(0, filesize) == "efbb8a4b6d879fb0d28f6b480436010fe91ab2b4ecf416640ef54650c2fdfc60"
}

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 efbb8a4b6d879fb0d28f6b480436010fe91ab2b4ecf416640ef54650c2fdfc60 # MD5 95bd29a0321f88b1d52a083f505210ab
TypeValueNote
sha256 efbb8a4b6d879fb0d28f6b480436010fe91ab2b4ecf416640ef54650c2fdfc60 Sample:Akira
md5 95bd29a0321f88b1d52a083f505210ab Sample:Akira
Tags
akiraransomwaremalwarehighsha256hash-analizi