MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25645bd83ee77d9018173098716e1fe06c71539bb2e92c455d83214734704879be9
MD53fec26c480282ba96eb633c615364f89
File Typeexe
Size255.5 KB
First Seen2026-03-06
File Name45bd83ee77d9018173098716e1fe06c71539bb2e92c455d83214734704879be9
Tagsbot8257734127, exe, 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: 45bd83ee77d9018173098716e1fe06c71539bb2e92c455d83214734704879be9
  • MD5: 3fec26c480282ba96eb633c615364f89

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: 45bd83ee77d90181"
        threat_level = "medium"
        first_seen = "2026-03-06"
    condition:
        hash.sha256(0, filesize) == "45bd83ee77d9018173098716e1fe06c71539bb2e92c455d83214734704879be9"
}

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 45bd83ee77d9018173098716e1fe06c71539bb2e92c455d83214734704879be9 # MD5 3fec26c480282ba96eb633c615364f89
TypeValueNote
sha256 45bd83ee77d9018173098716e1fe06c71539bb2e92c455d83214734704879be9 Sample:MassLogger
md5 3fec26c480282ba96eb633c615364f89 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi