MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2561919be5ba91f794f631b768ac505cd3d70da8c3eac1ea16ba1a412694176845d
MD528ef199a95bc7a4aceab0f4bb1d1c124
File Typeexe
Size589.0 KB
First Seen2025-08-12
File Name1919be5ba91f794f631b768ac505cd3d70da8c3eac1ea16ba1a412694176845d
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: 1919be5ba91f794f631b768ac505cd3d70da8c3eac1ea16ba1a412694176845d
  • MD5: 28ef199a95bc7a4aceab0f4bb1d1c124

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: 1919be5ba91f794f"
        threat_level = "medium"
        first_seen = "2025-08-12"
    condition:
        hash.sha256(0, filesize) == "1919be5ba91f794f631b768ac505cd3d70da8c3eac1ea16ba1a412694176845d"
}

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 1919be5ba91f794f631b768ac505cd3d70da8c3eac1ea16ba1a412694176845d # MD5 28ef199a95bc7a4aceab0f4bb1d1c124
TypeValueNote
sha256 1919be5ba91f794f631b768ac505cd3d70da8c3eac1ea16ba1a412694176845d Sample:MassLogger
md5 28ef199a95bc7a4aceab0f4bb1d1c124 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi