MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2567d917f5ae5f787f893ef5d5e5581eecace130b1a15ab68400cc72c8c253a3fff
MD57a343557366a65a6366e5b5ea02dbe07
File Typehta
Size2221.9 KB
First Seen2026-04-30
File Namerrc90043123.hta
Tagshta, 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: 7d917f5ae5f787f893ef5d5e5581eecace130b1a15ab68400cc72c8c253a3fff
  • MD5: 7a343557366a65a6366e5b5ea02dbe07

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: 7d917f5ae5f787f8"
        threat_level = "medium"
        first_seen = "2026-04-30"
    condition:
        hash.sha256(0, filesize) == "7d917f5ae5f787f893ef5d5e5581eecace130b1a15ab68400cc72c8c253a3fff"
}

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 7d917f5ae5f787f893ef5d5e5581eecace130b1a15ab68400cc72c8c253a3fff # MD5 7a343557366a65a6366e5b5ea02dbe07
TypeValueNote
sha256 7d917f5ae5f787f893ef5d5e5581eecace130b1a15ab68400cc72c8c253a3fff Sample:MassLogger
md5 7a343557366a65a6366e5b5ea02dbe07 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi