AgentTesla | Threat Level: high | Type: Infostealer

Cryptographic Identifiers

SHA256655a591ca8565a8a125959ff3af2268189ffc70ce0106d01fa236493f58cbe2e
MD55b34a57ebe6ab9cd0198814bf835f8a9
File Typerar
Size585.8 KB
First Seen2026-05-20
File Name43739_FLAT_BAR_SUS_316L.gz.rar
TagsAgentTesla, rar

Malware Family: AgentTesla

Agent Tesla, keylogger'dır.

TypeInfostealer
Programming Language.NET
Target PlatformWindows
C2 ProtocolSMTP/FTP
PurposeTuş kaydı, hırsızlık
First Seen Year2014
AliasesAgent Tesla

Threat Indicators (IOC)

  • SHA256: 655a591ca8565a8a125959ff3af2268189ffc70ce0106d01fa236493f58cbe2e
  • MD5: 5b34a57ebe6ab9cd0198814bf835f8a9

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

System Cleanup Guide

  1. Disconnect the system from the network immediately
  2. Yeni bir cihazdan banka hesabı, sosyal medya ve e-posta şifrelerini değiştirin
  3. Move crypto wallets to a new address and abandon the old ones
  4. Start a full scan with up-to-date antivirus
  5. Clear saved browser passwords and enable 2FA
  6. Sign out of all sessions on every affected service

YARA Rule Hints

rule AgentTesla_SHA256 {
    meta:
        description = "AgentTesla sample: 655a591ca8565a8a"
        threat_level = "high"
        first_seen = "2026-05-20"
    condition:
        hash.sha256(0, filesize) == "655a591ca8565a8a125959ff3af2268189ffc70ce0106d01fa236493f58cbe2e"
}

AgentTesla — Malware Profile

AgentTesla .NET credential stealer. JS dropper @version 8.16.22. Sayısal obfuscation v6034. SMTP FTP HTTP C2.

Malware Type
Infostealer
Programming Language
.NET
C2 Protocol
SMTP/FTP
Target Systems
Windows
Also Known As (AKA)
Agent Tesla

Technical Details

C#/.NET, SMTP/FTP/HTTP C2, GetAsyncKeyState keylogger, browser stealer (Chrome/Firefox/Edge), email client stealer, FTP stealer, VPN stealer, clipboard monitor, screenshot

Attribution / Threat Actor

Turkce konusulan gelistirici 'Turk Hack Team' ile iliskilendirilen ve Turkiye'den yonetildigi dusunulen platform. Pek cok farkli siber suc grubu musterisi bulunmaktadir.

Capabilities & Behavior

Tarayıcı Kimlik Bilgileri
Çerez Hırsızlığı
Kripto Cüzdan Çalma
Sistem Bilgisi
Ekran Görüntüsü
FTP/SSH İstemci Şifreleri
E-posta İstemcisi Çalma
Veri Sızıntısı

IOC List (2 indicators)

IOC — AgentTesla
# SHA256 655a591ca8565a8a125959ff3af2268189ffc70ce0106d01fa236493f58cbe2e # MD5 5b34a57ebe6ab9cd0198814bf835f8a9
TypeValueNote
sha256 655a591ca8565a8a125959ff3af2268189ffc70ce0106d01fa236493f58cbe2e Sample:AgentTesla
md5 5b34a57ebe6ab9cd0198814bf835f8a9 Sample:AgentTesla

C2 Servers (8 recorded servers for this family)

Address Type Port Protocol Status Country
digicert.com domain — TCP active —
stem.ru domain — TCP active —
digicert.com domain — TCP active —
dublincore.org domain — TCP active —
googleapis.com domain — TCP active —
microsoft.com domain — TCP active —
freightfacilitators.com domain — TCP active —
digicert.com domain — TCP active —

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

Tags
agentteslainfostealermalwarehighsha256hash-analizi