MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2565aebca345f3cc7fd0251092cce5682d68391fbd5b5c232c393c58082f0347a72
MD5aa066abcf0667dc144699192f4f83b97
File Typeexe
Size201.5 KB
First Seen2026-04-22
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: 5aebca345f3cc7fd0251092cce5682d68391fbd5b5c232c393c58082f0347a72
  • MD5: aa066abcf0667dc144699192f4f83b97

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: 5aebca345f3cc7fd"
        threat_level = "medium"
        first_seen = "2026-04-22"
    condition:
        hash.sha256(0, filesize) == "5aebca345f3cc7fd0251092cce5682d68391fbd5b5c232c393c58082f0347a72"
}

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 5aebca345f3cc7fd0251092cce5682d68391fbd5b5c232c393c58082f0347a72 # MD5 aa066abcf0667dc144699192f4f83b97
TypeValueNote
sha256 5aebca345f3cc7fd0251092cce5682d68391fbd5b5c232c393c58082f0347a72 Sample:MassLogger
md5 aa066abcf0667dc144699192f4f83b97 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi