MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256ea3e8c3eb86640176f6ce63394d49aaa7c172bb1894aa4e73c3009eec29a212f
MD51a7dc9e83833e0fc72d818b4b80c1879
File Typejs
Size778.8 KB
First Seen2026-06-10
File NameBBVA.js
TagsBBVA, js, 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: ea3e8c3eb86640176f6ce63394d49aaa7c172bb1894aa4e73c3009eec29a212f
  • MD5: 1a7dc9e83833e0fc72d818b4b80c1879

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: ea3e8c3eb8664017"
        threat_level = "medium"
        first_seen = "2026-06-10"
    condition:
        hash.sha256(0, filesize) == "ea3e8c3eb86640176f6ce63394d49aaa7c172bb1894aa4e73c3009eec29a212f"
}

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 ea3e8c3eb86640176f6ce63394d49aaa7c172bb1894aa4e73c3009eec29a212f # MD5 1a7dc9e83833e0fc72d818b4b80c1879
TypeValueNote
sha256 ea3e8c3eb86640176f6ce63394d49aaa7c172bb1894aa4e73c3009eec29a212f Sample:MassLogger
md5 1a7dc9e83833e0fc72d818b4b80c1879 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi