MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256f45a08004e83115a292abe23532991b07eb50bd08a19217ef4fa09420a6dad10
MD53542cfe6c681e87c980156c0afb3e721
File Typeexe
Size768.0 KB
First Seen2025-08-25
File NameSecuriteInfo.com.Trojan.PackedNET.3390.20248.28516
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: f45a08004e83115a292abe23532991b07eb50bd08a19217ef4fa09420a6dad10
  • MD5: 3542cfe6c681e87c980156c0afb3e721

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: f45a08004e83115a"
        threat_level = "medium"
        first_seen = "2025-08-25"
    condition:
        hash.sha256(0, filesize) == "f45a08004e83115a292abe23532991b07eb50bd08a19217ef4fa09420a6dad10"
}

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 f45a08004e83115a292abe23532991b07eb50bd08a19217ef4fa09420a6dad10 # MD5 3542cfe6c681e87c980156c0afb3e721
TypeValueNote
sha256 f45a08004e83115a292abe23532991b07eb50bd08a19217ef4fa09420a6dad10 Sample:MassLogger
md5 3542cfe6c681e87c980156c0afb3e721 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi