StealC | Threat Level: high | Type: Infostealer

Cryptographic Identifiers

SHA256aa9b78c1ac0725cf223f4f85c66e7b85f5b5159a7867799970a3ed30ddec04d4
MD5bd70fa84b5247c3fe6bf789b470d1fef
File Typeexe
Size694.0 KB
First Seen2025-12-12
File Namef3d5a80d27c049f2ba17d69b09c13bd5_build.exe
Tagsexe, Stealc

Malware Family: StealC

StealC, stealer'dır.

TypeInfostealer
Programming LanguageC
Target PlatformWindows
C2 ProtocolHTTP
PurposeStealer
First Seen Year2023

Threat Indicators (IOC)

  • SHA256: aa9b78c1ac0725cf223f4f85c66e7b85f5b5159a7867799970a3ed30ddec04d4
  • MD5: bd70fa84b5247c3fe6bf789b470d1fef

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 StealC_SHA256 {
    meta:
        description = "StealC sample: aa9b78c1ac0725cf"
        threat_level = "high"
        first_seen = "2025-12-12"
    condition:
        hash.sha256(0, filesize) == "aa9b78c1ac0725cf223f4f85c66e7b85f5b5159a7867799970a3ed30ddec04d4"
}

StealC — Malware Profile

StealC, 2023 yilinda ortaya cikan Go (Golang) tabanlı bir MaaS infostealer ailesidir. Vidar ve Raccoon kaynak kodundan ilham alinarak gelistirildigi dusunulmektedir. 30+ tarayici, kripto cuzdan, FTP istemcisi, email ve Discord/Telegram token hedefler.

Malware Type
Infostealer
Programming Language
C
C2 Protocol
HTTP
Target Systems
Windows

Technical Details

C dili, HTTP POST C2, browser stealer (Chromium/Firefox), kripto wallet stealer (50+ tarayici eklentisi), Telegram stealer, Steam, Discord token stealer, fingerprint modulu

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 — StealC
# SHA256 aa9b78c1ac0725cf223f4f85c66e7b85f5b5159a7867799970a3ed30ddec04d4 # MD5 bd70fa84b5247c3fe6bf789b470d1fef
TypeValueNote
sha256 aa9b78c1ac0725cf223f4f85c66e7b85f5b5159a7867799970a3ed30ddec04d4 Sample:StealC
md5 bd70fa84b5247c3fe6bf789b470d1fef Sample:StealC

C2 Servers (4 recorded servers for this family)

Address Type Port Protocol Status Country
www.pakistani.org domain — HTTP active —
45.87.152.64 ip 80 HTTP inactive NL
185.174.137.219 ip 80 HTTP inactive RU
godebugs.Info domain — HTTP inactive —

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

Tags
stealcinfostealermalwarehighsha256hash-analizi