MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256a53b0f944d906d684172cdc0e5ecf249b70d541f87e1e477d55f22d24ca7a000
MD576a34f16e1b2777916f553ca5838bd10
File Typeexe
Size881.0 KB
First Seen2026-05-08
File Namea53b0f944d906d684172cdc0e5ecf249b70d541f87e1e477d55f22d24ca7a000
Tagsexe, MassLogger

Malware Family: MassLogger

MassLogger, email tabanlı keylogger'dır.

TypeInfostealer
Programming LanguageC#/.NET
Target PlatformWindows
C2 ProtocolSMTP/FTP
PurposeEmail keylogger
First Seen Year2020

Threat Indicators (IOC)

  • SHA256: a53b0f944d906d684172cdc0e5ecf249b70d541f87e1e477d55f22d24ca7a000
  • MD5: 76a34f16e1b2777916f553ca5838bd10

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: a53b0f944d906d68"
        threat_level = "medium"
        first_seen = "2026-05-08"
    condition:
        hash.sha256(0, filesize) == "a53b0f944d906d684172cdc0e5ecf249b70d541f87e1e477d55f22d24ca7a000"
}

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 a53b0f944d906d684172cdc0e5ecf249b70d541f87e1e477d55f22d24ca7a000 # MD5 76a34f16e1b2777916f553ca5838bd10
TypeValueNote
sha256 a53b0f944d906d684172cdc0e5ecf249b70d541f87e1e477d55f22d24ca7a000 Sample:MassLogger
md5 76a34f16e1b2777916f553ca5838bd10 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi