MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256f7ff10120f9873493a702d4af415eb13d9ccee1915a42b0986fe37bfbe55a8be
MD53061b95caae416cc2046ad094d8831fa
File Typeexe
Size201.5 KB
First Seen2026-04-13
File Namesvchost.zowner
Tagsexe, 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: f7ff10120f9873493a702d4af415eb13d9ccee1915a42b0986fe37bfbe55a8be
  • MD5: 3061b95caae416cc2046ad094d8831fa

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: f7ff10120f987349"
        threat_level = "medium"
        first_seen = "2026-04-13"
    condition:
        hash.sha256(0, filesize) == "f7ff10120f9873493a702d4af415eb13d9ccee1915a42b0986fe37bfbe55a8be"
}

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 f7ff10120f9873493a702d4af415eb13d9ccee1915a42b0986fe37bfbe55a8be # MD5 3061b95caae416cc2046ad094d8831fa
TypeValueNote
sha256 f7ff10120f9873493a702d4af415eb13d9ccee1915a42b0986fe37bfbe55a8be Sample:MassLogger
md5 3061b95caae416cc2046ad094d8831fa Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi