MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256d5bd67edddb02aaf59ac0743bc2ad8fe235ee8b4cda045e2475193cb8ccca8ff
MD58bf85a228d23029f6d57529608556492
File Typeexe
Size703.5 KB
First Seen2025-06-27
File Named5bd67edddb02aaf59ac0743bc2ad8fe235ee8b4cda045e2475193cb8ccca8ff
Tags213-209-150-18, exe, MassLogger

Malware Family: MassLogger

MassLogger, email keylogger'dır.

TypeInfostealer
Programming LanguageC#/.NET
Target PlatformWindows
C2 ProtocolSMTP/FTP
PurposeEmail keylogger
First Seen Year2020

Threat Indicators (IOC)

  • SHA256: d5bd67edddb02aaf59ac0743bc2ad8fe235ee8b4cda045e2475193cb8ccca8ff
  • MD5: 8bf85a228d23029f6d57529608556492

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 MassLogger_SHA256 {
    meta:
        description = "MassLogger sample: d5bd67edddb02aaf"
        threat_level = "medium"
        first_seen = "2025-06-27"
    condition:
        hash.sha256(0, filesize) == "d5bd67edddb02aaf59ac0743bc2ad8fe235ee8b4cda045e2475193cb8ccca8ff"
}

MassLogger — Malware Profile

MassLogger credential stealer. PT2600000043.js Portekiz fatura lurü. CommonJS obfuscation. dispatch configuration data.

Malware Type
Infostealer
Programming Language
C#/.NET
C2 Protocol
SMTP/FTP
Target Systems
Windows

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 — MassLogger
# SHA256 d5bd67edddb02aaf59ac0743bc2ad8fe235ee8b4cda045e2475193cb8ccca8ff # MD5 8bf85a228d23029f6d57529608556492
TypeValueNote
sha256 d5bd67edddb02aaf59ac0743bc2ad8fe235ee8b4cda045e2475193cb8ccca8ff Sample:MassLogger
md5 8bf85a228d23029f6d57529608556492 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi