MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2566fbdfecea78fc2f2094e36112e7cdcd496b9ee47262c8fae1b47999a576f9663
MD58720ea6230d7496108bd371fc1cd25b5
File Typeexe
Size5504.5 KB
First Seen2025-08-21
File Namemsedge_elf.dll
Tagsexe, 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: 6fbdfecea78fc2f2094e36112e7cdcd496b9ee47262c8fae1b47999a576f9663
  • MD5: 8720ea6230d7496108bd371fc1cd25b5

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: 6fbdfecea78fc2f2"
        threat_level = "medium"
        first_seen = "2025-08-21"
    condition:
        hash.sha256(0, filesize) == "6fbdfecea78fc2f2094e36112e7cdcd496b9ee47262c8fae1b47999a576f9663"
}

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 6fbdfecea78fc2f2094e36112e7cdcd496b9ee47262c8fae1b47999a576f9663 # MD5 8720ea6230d7496108bd371fc1cd25b5
TypeValueNote
sha256 6fbdfecea78fc2f2094e36112e7cdcd496b9ee47262c8fae1b47999a576f9663 Sample:MassLogger
md5 8720ea6230d7496108bd371fc1cd25b5 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi