MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2561b44667a41735a6ef7b5f0a5da1146a7a92d1ab053de189483fc5b039f735505
MD5f57daa8141bca737460d4c241dfe2151
File Typevbs
Size1159.6 KB
First Seen2026-02-10
File Namedekont.pdf.vbs
TagsMassLogger, vbs

Malware Family: MassLogger

MassLogger, email keylogger'dır.

TypeInfostealer
Programming LanguageC#/.NET
Target PlatformWindows
C2 ProtocolSMTP/FTP
PurposeEmail keylogger
First Seen Year2020

Threat Indicators (IOC)

  • SHA256: 1b44667a41735a6ef7b5f0a5da1146a7a92d1ab053de189483fc5b039f735505
  • MD5: f57daa8141bca737460d4c241dfe2151

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: 1b44667a41735a6e"
        threat_level = "medium"
        first_seen = "2026-02-10"
    condition:
        hash.sha256(0, filesize) == "1b44667a41735a6ef7b5f0a5da1146a7a92d1ab053de189483fc5b039f735505"
}

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 1b44667a41735a6ef7b5f0a5da1146a7a92d1ab053de189483fc5b039f735505 # MD5 f57daa8141bca737460d4c241dfe2151
TypeValueNote
sha256 1b44667a41735a6ef7b5f0a5da1146a7a92d1ab053de189483fc5b039f735505 Sample:MassLogger
md5 f57daa8141bca737460d4c241dfe2151 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi