MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256e18d94c64895979cfa3f06de5f203dd586bbb41cd42a4319cf540a64b01e668f
MD54de1e4d52c87116be0c5e91e6aed58ca
File Typeexe
Size1059.5 KB
First Seen2026-06-08
File Namee18d94c64895979cfa3f06de5f203dd586bbb41cd42a4319cf540a64b01e668f
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: e18d94c64895979cfa3f06de5f203dd586bbb41cd42a4319cf540a64b01e668f
  • MD5: 4de1e4d52c87116be0c5e91e6aed58ca

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: e18d94c64895979c"
        threat_level = "medium"
        first_seen = "2026-06-08"
    condition:
        hash.sha256(0, filesize) == "e18d94c64895979cfa3f06de5f203dd586bbb41cd42a4319cf540a64b01e668f"
}

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 e18d94c64895979cfa3f06de5f203dd586bbb41cd42a4319cf540a64b01e668f # MD5 4de1e4d52c87116be0c5e91e6aed58ca
TypeValueNote
sha256 e18d94c64895979cfa3f06de5f203dd586bbb41cd42a4319cf540a64b01e668f Sample:MassLogger
md5 4de1e4d52c87116be0c5e91e6aed58ca Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi