MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2560457c03d79b8d12822ee5d90b01b4f7b1b43217dc9aa1ce8916e425189298336
MD57de3d736dbb8a831d233ed35997fd14d
File Typevbs
Size28.3 KB
First Seen2026-04-15
File Namerocc3478k1.vbs
TagsMassLogger, vbs

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: 0457c03d79b8d12822ee5d90b01b4f7b1b43217dc9aa1ce8916e425189298336
  • MD5: 7de3d736dbb8a831d233ed35997fd14d

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: 0457c03d79b8d128"
        threat_level = "medium"
        first_seen = "2026-04-15"
    condition:
        hash.sha256(0, filesize) == "0457c03d79b8d12822ee5d90b01b4f7b1b43217dc9aa1ce8916e425189298336"
}

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 0457c03d79b8d12822ee5d90b01b4f7b1b43217dc9aa1ce8916e425189298336 # MD5 7de3d736dbb8a831d233ed35997fd14d
TypeValueNote
sha256 0457c03d79b8d12822ee5d90b01b4f7b1b43217dc9aa1ce8916e425189298336 Sample:MassLogger
md5 7de3d736dbb8a831d233ed35997fd14d Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi