MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256e73fe6ede66c3865b9fd19ec3b1c26350316a376aba898b9de6be425e9e9deb2
MD5f6dd4df354e861957179addac1cdf135
File Typehta
Size2369.7 KB
First Seen2026-05-26
File Namerrckk9946632.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: e73fe6ede66c3865b9fd19ec3b1c26350316a376aba898b9de6be425e9e9deb2
  • MD5: f6dd4df354e861957179addac1cdf135

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: e73fe6ede66c3865"
        threat_level = "medium"
        first_seen = "2026-05-26"
    condition:
        hash.sha256(0, filesize) == "e73fe6ede66c3865b9fd19ec3b1c26350316a376aba898b9de6be425e9e9deb2"
}

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 e73fe6ede66c3865b9fd19ec3b1c26350316a376aba898b9de6be425e9e9deb2 # MD5 f6dd4df354e861957179addac1cdf135
TypeValueNote
sha256 e73fe6ede66c3865b9fd19ec3b1c26350316a376aba898b9de6be425e9e9deb2 Sample:MassLogger
md5 f6dd4df354e861957179addac1cdf135 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi