MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25668ca74e65fc49e5a1e5aa9c875918975bee57e677530e99d739953436003b180
MD530cb2e0ebc6bdf58ac5648fb7ccc7f94
File Typebat
Size234.0 KB
First Seen2026-04-29
File Namez1FEDEX_E_DOCUMENT.bat
Tagsbat, 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: 68ca74e65fc49e5a1e5aa9c875918975bee57e677530e99d739953436003b180
  • MD5: 30cb2e0ebc6bdf58ac5648fb7ccc7f94

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: 68ca74e65fc49e5a"
        threat_level = "medium"
        first_seen = "2026-04-29"
    condition:
        hash.sha256(0, filesize) == "68ca74e65fc49e5a1e5aa9c875918975bee57e677530e99d739953436003b180"
}

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 68ca74e65fc49e5a1e5aa9c875918975bee57e677530e99d739953436003b180 # MD5 30cb2e0ebc6bdf58ac5648fb7ccc7f94
TypeValueNote
sha256 68ca74e65fc49e5a1e5aa9c875918975bee57e677530e99d739953436003b180 Sample:MassLogger
md5 30cb2e0ebc6bdf58ac5648fb7ccc7f94 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi