MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256f6eb413e10a83ccf32477baf2c8d7d21c33e98a1b65755989487fbb5d941e6ff
MD57be96bbd87dae218a0662071c9ae0db6
File Typeexe
Size980.0 KB
First Seen2026-06-08
File Namef6eb413e10a83ccf32477baf2c8d7d21c33e98a1b65755989487fbb5d941e6ff
Tagsexe, MassLogger

Malware Family: MassLogger

MassLogger, email tabanlı keylogger'dır.

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

Threat Indicators (IOC)

  • SHA256: f6eb413e10a83ccf32477baf2c8d7d21c33e98a1b65755989487fbb5d941e6ff
  • MD5: 7be96bbd87dae218a0662071c9ae0db6

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: f6eb413e10a83ccf"
        threat_level = "medium"
        first_seen = "2026-06-08"
    condition:
        hash.sha256(0, filesize) == "f6eb413e10a83ccf32477baf2c8d7d21c33e98a1b65755989487fbb5d941e6ff"
}

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 f6eb413e10a83ccf32477baf2c8d7d21c33e98a1b65755989487fbb5d941e6ff # MD5 7be96bbd87dae218a0662071c9ae0db6
TypeValueNote
sha256 f6eb413e10a83ccf32477baf2c8d7d21c33e98a1b65755989487fbb5d941e6ff Sample:MassLogger
md5 7be96bbd87dae218a0662071c9ae0db6 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi