MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25664af3eb85e0ccf49463c92a87ba868c2cbd118b092bb77cf129f580d9f06096a
MD5bb67ef11e3834f4b84d541de74e096c9
File Typeexe
Size677.5 KB
First Seen2026-01-09
File Name64af3eb85e0ccf49463c92a87ba868c2cbd118b092bb77cf129f580d9f06096a
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: 64af3eb85e0ccf49463c92a87ba868c2cbd118b092bb77cf129f580d9f06096a
  • MD5: bb67ef11e3834f4b84d541de74e096c9

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: 64af3eb85e0ccf49"
        threat_level = "medium"
        first_seen = "2026-01-09"
    condition:
        hash.sha256(0, filesize) == "64af3eb85e0ccf49463c92a87ba868c2cbd118b092bb77cf129f580d9f06096a"
}

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 64af3eb85e0ccf49463c92a87ba868c2cbd118b092bb77cf129f580d9f06096a # MD5 bb67ef11e3834f4b84d541de74e096c9
TypeValueNote
sha256 64af3eb85e0ccf49463c92a87ba868c2cbd118b092bb77cf129f580d9f06096a Sample:MassLogger
md5 bb67ef11e3834f4b84d541de74e096c9 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi