MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2564cbdfc8778425a442a09615e32577ce004f2946e38ff554e04293aabbbb80174
MD50bc520d963d25b428da36008d99c4169
File Typeexe
Size784.5 KB
First Seen2025-10-09
File Name4cbdfc8778425a442a09615e32577ce004f2946e38ff554e04293aabbbb80174
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: 4cbdfc8778425a442a09615e32577ce004f2946e38ff554e04293aabbbb80174
  • MD5: 0bc520d963d25b428da36008d99c4169

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: 4cbdfc8778425a44"
        threat_level = "medium"
        first_seen = "2025-10-09"
    condition:
        hash.sha256(0, filesize) == "4cbdfc8778425a442a09615e32577ce004f2946e38ff554e04293aabbbb80174"
}

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 4cbdfc8778425a442a09615e32577ce004f2946e38ff554e04293aabbbb80174 # MD5 0bc520d963d25b428da36008d99c4169
TypeValueNote
sha256 4cbdfc8778425a442a09615e32577ce004f2946e38ff554e04293aabbbb80174 Sample:MassLogger
md5 0bc520d963d25b428da36008d99c4169 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi