MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2567d354d35cf821e03dba4b665613ebf89970567e649f311f218131c05f61f4035
MD5a4cdb53c251aa35859c33d748bd57644
File Typeexe
Size624.0 KB
First Seen2026-02-13
File NameSecuriteInfo.com.Win32.MalwareX-gen.99878185
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: 7d354d35cf821e03dba4b665613ebf89970567e649f311f218131c05f61f4035
  • MD5: a4cdb53c251aa35859c33d748bd57644

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: 7d354d35cf821e03"
        threat_level = "medium"
        first_seen = "2026-02-13"
    condition:
        hash.sha256(0, filesize) == "7d354d35cf821e03dba4b665613ebf89970567e649f311f218131c05f61f4035"
}

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 7d354d35cf821e03dba4b665613ebf89970567e649f311f218131c05f61f4035 # MD5 a4cdb53c251aa35859c33d748bd57644
TypeValueNote
sha256 7d354d35cf821e03dba4b665613ebf89970567e649f311f218131c05f61f4035 Sample:MassLogger
md5 a4cdb53c251aa35859c33d748bd57644 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi