MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2567a22eb9f19792baad6002247762ff2d19199a36daa84da958da3f436f36b1371
MD5b4ae7650db4c6862a38a07cb5ec4cdc2
File Typejs
Size2395.7 KB
First Seen2026-06-08
File NameRFQ.js
Tagsjs, 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: 7a22eb9f19792baad6002247762ff2d19199a36daa84da958da3f436f36b1371
  • MD5: b4ae7650db4c6862a38a07cb5ec4cdc2

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: 7a22eb9f19792baa"
        threat_level = "medium"
        first_seen = "2026-06-08"
    condition:
        hash.sha256(0, filesize) == "7a22eb9f19792baad6002247762ff2d19199a36daa84da958da3f436f36b1371"
}

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 7a22eb9f19792baad6002247762ff2d19199a36daa84da958da3f436f36b1371 # MD5 b4ae7650db4c6862a38a07cb5ec4cdc2
TypeValueNote
sha256 7a22eb9f19792baad6002247762ff2d19199a36daa84da958da3f436f36b1371 Sample:MassLogger
md5 b4ae7650db4c6862a38a07cb5ec4cdc2 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi