MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256a96f066e3ae67ccc22e5b15467a6bf8c1e35de2afea05722528221e4db827f0e
MD5c2647e1e3d33701d65d6515e7c845ea4
File Typejs
Size3792.0 KB
First Seen2026-06-15
File NameRecibo de Pago_06_2026.pdf.js
Tagsexe, 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: a96f066e3ae67ccc22e5b15467a6bf8c1e35de2afea05722528221e4db827f0e
  • MD5: c2647e1e3d33701d65d6515e7c845ea4

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: a96f066e3ae67ccc"
        threat_level = "medium"
        first_seen = "2026-06-15"
    condition:
        hash.sha256(0, filesize) == "a96f066e3ae67ccc22e5b15467a6bf8c1e35de2afea05722528221e4db827f0e"
}

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 a96f066e3ae67ccc22e5b15467a6bf8c1e35de2afea05722528221e4db827f0e # MD5 c2647e1e3d33701d65d6515e7c845ea4
TypeValueNote
sha256 a96f066e3ae67ccc22e5b15467a6bf8c1e35de2afea05722528221e4db827f0e Sample:MassLogger
md5 c2647e1e3d33701d65d6515e7c845ea4 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi